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Documentation changes
What the docs quietly changed.
Anthropic's published documentation, fetched on a schedule and diffed against the last copy. Every edit dated, including the ones that never made a release note.
Last poll read all 4 cleanly: Claude Code CLI, Claude Developer Platform, Claude Documentation, Model Context Protocol. A date here is when this site noticed, not when Anthropic edited.
Claude Developer Platform
821pages tracked
774 changed this week · last read 23 Oct 2026
Claude Code CLI
228pages tracked
148 changed this week · last read 23 Oct 2026
Claude Documentation
280pages tracked
81 changed this week · last read 23 Oct 2026
Model Context Protocol
357pages tracked
171 changed this week · last read 23 Oct 2026
100 on this page
10,119 of the ledger's changes in api. Show every change
ReadSourcePageWhatLines
12 Oct 2026
460 pages
+9511 −3169 lines
api
test-and-evaluate/develop-tests
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apichanged
test-and-evaluate/develop-tests
| | Criteria
| ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| Bad | The model should classify sentiments well
| Good | On a held-out test set of 10,000 diverse Twitter posts, the sentiment analysis model should achieve: - an F1 score of at least 0.85 - 99.5% of outputs are non-toxic - 90
| | Criteria
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api
managed-agents/vaults
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managed-agents/vaults
expiresAt: new DateTimeImmutable('2099-12-31T23:59:59Z'),
expiresAt: new \DateTimeImmutable('2099-12-31T23:59:59Z'),
expiresAt: new DateTimeImmutable('2099-12-31T23:59:59Z'),
expiresAt: new \DateTimeImmutable('2099-12-31T23:59:59Z'),
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api
managed-agents/events-and-streaming
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apichanged
managed-agents/events-and-streaming
use Anthropic\Beta\Sessions\Events\ManagedAgentsAgentMessageEvent;
use Anthropic\Beta\Sessions\Events\ManagedAgentsSessionErrorEvent;
use Anthropic\Beta\Sessions\Events\ManagedAgentsTextBlock;
$event instanceof \Anthropic\Beta\Sessions\Events\ManagedAgentsAgentMessageEvent => array_walk(
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api
managed-agents/event-deltas
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managed-agents/event-deltas
// In PHP, set eventDeltas on EventStreamParams and accumulate with Anthropic\Lib\Sessions\EventAccumulator.
use Anthropic\Beta\Sessions\BetaManagedAgentsDeltaEvent;
use Anthropic\Beta\Sessions\BetaManagedAgentsDeltaType;
use Anthropic\Beta\Sessions\BetaManagedAgentsStartEvent;
use Anthropic\Beta\Sessions\Events\ManagedAgentsAgentMessageEvent;
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api
managed-agents/agent-setup
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managed-agents/agent-setup
<CodeGroup exclude="shell:CLI, python, typescript, csharp, go, java, php, ruby">
<CodeGroup>
```bash CLI
ant beta:agents update \
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api
manage-claude/user-management
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manage-claude/user-management
| Resource | Endpoints
| ----------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------
| **Members** | `GET /v1/organizations/users` `GET /v1/organizations/users/{user_id}` `POST /v1/organizations/users/{user_id}` `DELETE /v1/organizations/users/{user_id}`
| **Invites** | `POST /v1/organizations/invites` `GET /v1/organizations/invites` `GET /v1/organizations/invites/{invite_id}` `DELETE /v1/organizations/invites/{invite_id}`
| **Groups** | `GET /v1/organizations/rbac_groups` `GET /v1/organizations/rbac_groups/{rbac_group_id}` `POST /v1/organizations/rbac_groups` `POST /v1/organizations/rbac_grou
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api
manage-claude/spend-limits-api
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manage-claude/spend-limits-api
| Resource | Endpoints
| --------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------
| **Spend limits** | `GET /v1/organizations/spend_limits/effective` `GET /v1/organizations/spend_limits/{spend_limit_id}` `POST /v1/organizations/spend_limits` `DE
| **Spend limit increase requests** | `GET /v1/organizations/spend_limit_increase_requests` `GET /v1/organizations/spend_limit_increase_requests/{id}` `POST /v1/organizations/spend
| Resource | Endpoints
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api
manage-claude/plugins-api
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manage-claude/plugins-api
| Resource | Endpoints
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------
| **Plugins**: list every plugin in the organization, upload a new one, look one up, choose the version members are served (roll back or promote), delete one | `GET /v1/org
| **Plugin versions**: list a plugin's version history, upload a new version, look one up, download a version's files | `GET /v1/org
| **Installation settings**: read who can use an organization-owned plugin, set it for the whole organization or for one group, remove either setting | `GET /v1/org
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api
manage-claude/api-and-data-retention
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manage-claude/api-and-data-retention
| Feature | Endpoint | ZDR
| -------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------- | ----
| [1M token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) | `/v1/messages` | <Eli
| [Adaptive thinking](https://platform.claude.com/docs/en/build-with-claude/thinking) | `/v1/messages` | <Eli
| [Advisor tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool) | `/v1/messages` with `advisor` tool | <Eli
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api
cli-sdks-libraries/sdks/php
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cli-sdks-libraries/sdks/php
$client = new Anthropic\Client(
requestOptions: Anthropic\RequestOptions::with(streamingTransporter: $myStreamingClient),
$client = new \Anthropic\Client(
requestOptions: \Anthropic\RequestOptions::with(streamingTransporter: $myStreamingClient),
// ...
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api
build-with-claude/prompt-caching
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build-with-claude/prompt-caching
| Request | Content | Cache behavior
| --------- | ---------------------------------------------------------------------------------------- | --------------------------------------------------------------------------
| Request 1 | System + User(1) + Asst(1) + **User(2)** ◀ cache | Everything written to cache
| Request 2 | System + User(1) + Asst(1) + User(2) + Asst(2) + **User(3)** ◀ cache | System through User(2) read from cache; Asst(2) + User(3) written to cache
| Request 3 | System + User(1) + Asst(1) + User(2) + Asst(2) + User(3) + Asst(3) + **User(4)** ◀ cache | System through User(3) read from cache; Asst(3) + User(4) written to cache
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api
build-with-claude/overview
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build-with-claude/overview
| Classification | Description
| -------------- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------
| **Beta** | Preview features used for gathering feedback and iterating on a less mature use case. Availability may be limited, including through sign-up requirements or wait
| **Deprecated** | Feature is still functional but no longer recommended. A migration path and removal timeline are provided.
| **Retired** | Feature is no longer available.
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api
build-with-claude/mid-conversation-effort-example
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build-with-claude/mid-conversation-effort-example
throw new RuntimeException("could not create working directory {$workDir}");
throw new \RuntimeException("could not create working directory {$workDir}");
$stringValue = fn ($value) => $value instanceof BackedEnum ? $value->value : $value;
$stringValue = fn ($value) => $value instanceof \BackedEnum ? $value->value : $value;
} catch (JsonException) {
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api
build-with-claude/context-editing
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build-with-claude/context-editing
| Approach | Where it runs | Strategies | How it works
| --------------- | ------------- | ----------------------------------------------------------------------------------------------------- | ----------------------------------------
| **Server-side** | API | Tool result clearing (`clear_tool_uses_20250919`) Thinking block clearing (`clear_thinking_20251015`) | Applied before the prompt reaches Claude
| **Client-side** | SDK | Compaction | Available in [TypeScript and Ruby SDKs](
| Approach | Where it runs | Strategies | How it works
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api
build-with-claude/compaction-thinking-blocks
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build-with-claude/compaction-thinking-blocks
throw new RuntimeException("No summary: {$summary->stopReason}");
throw new \RuntimeException("No summary: {$summary->stopReason}");
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api
api/models/retrieve
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api/models/retrieve
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"created_at": "2026-07-24T00:00:00Z",
"created_at": "2026-09-21T00:00:00Z",
"display_name": "Claude Opus 5",
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api
api/models/list
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api/models/list
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"created_at": "2026-07-24T00:00:00Z",
"created_at": "2026-09-21T00:00:00Z",
"display_name": "Claude Opus 5",
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api
api/models
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api/models
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"created_at": "2026-07-24T00:00:00Z",
"created_at": "2026-09-21T00:00:00Z",
"display_name": "Claude Opus 5",
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api
api/messages/create
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api/messages/create
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-opus-5",
"model": "claude-opus-5-5",
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api
api/messages/count_tokens
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api/messages/count_tokens
"model": "claude-opus-5",
"model": "claude-opus-5-5",
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api
api/messages/batches/create
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api/messages/batches/create
"model": "claude-opus-5"
"model": "claude-opus-5-5"
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api
api/messages/batches
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apichanged
api/messages/batches
"model": "claude-opus-5"
"model": "claude-opus-5-5"
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api
api/messages
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api/messages
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-opus-5",
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api
api/compliance/activities/list
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apichanged
api/compliance/activities/list
- `activity_types: optional array of "abuse_decision_received" or "account_deleted" or "admin_api_key_created" or 516 more`
- `activity_types: optional array of "abuse_decision_received" or "account_deleted" or "admin_api_key_created" or 522 more`
- `"claude_artifact_sent_to_partner"`
A member sent an export of an artifact to a partner application ("Send to …" on the artifact; a partner is a third-party application listed in Claude's connector directory): a
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api
api/compliance/activities
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api/compliance/activities
- `activity_types: optional array of "abuse_decision_received" or "account_deleted" or "admin_api_key_created" or 516 more`
- `activity_types: optional array of "abuse_decision_received" or "account_deleted" or "admin_api_key_created" or 522 more`
- `"claude_artifact_sent_to_partner"`
A member sent an export of an artifact to a partner application ("Send to …" on the artifact; a partner is a third-party application listed in Claude's connector directory): a
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api
api/compliance
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api/compliance
- `activity_types: optional array of "abuse_decision_received" or "account_deleted" or "admin_api_key_created" or 516 more`
- `activity_types: optional array of "abuse_decision_received" or "account_deleted" or "admin_api_key_created" or 522 more`
- `"claude_artifact_sent_to_partner"`
A member sent an export of an artifact to a partner application ("Send to …" on the artifact; a partner is a third-party application listed in Claude's connector directory): a
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api
api/claude-platform-on-aws-iam-actions
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+60−60
apichanged
api/claude-platform-on-aws-iam-actions
| Action | Routes authorized |
| ---------------------- | ----------------------------------------------------------------------- |
| `CreateBatchInference` | `POST /v1/messages/batches` |
| `GetBatchInference` | `GET /v1/messages/batches/{id}` `GET /v1/messages/batches/{id}/results` |
| `ListBatchInferences` | `GET /v1/messages/batches` |
+60 −60 lines
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api
api/beta/sessions/update
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api/beta/sessions/update
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"id": "claude-opus-5",
"id": "claude-opus-5-5",
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api
api/beta/sessions/threads/retrieve
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api/beta/sessions/threads/retrieve
"id": "claude-opus-5",
"id": "claude-opus-5-5",
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api
api/beta/sessions/threads/list
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api/beta/sessions/threads/list
"id": "claude-opus-5",
"id": "claude-opus-5-5",
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api
api/beta/sessions/threads/archive
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api/beta/sessions/threads/archive
"id": "claude-opus-5",
"id": "claude-opus-5-5",
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api
api/beta/sessions/threads
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api/beta/sessions/threads
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"id": "claude-opus-5",
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api
api/beta/sessions/retrieve
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api/beta/sessions/retrieve
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"id": "claude-opus-5",
"id": "claude-opus-5-5",
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api
api/beta/sessions/list
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api/beta/sessions/list
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"id": "claude-opus-5",
"id": "claude-opus-5-5",
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api
api/beta/sessions/create
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api/beta/sessions/create
Replacement model. Accepts the model string, e.g. `claude-opus-5`, or a `model_config` object. Omit to use the agent's model.
Replacement model. Accepts the model string, e.g. `claude-opus-5-5`, or a `model_config` object. Omit to use the agent's model.
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"id": "claude-opus-5",
+3 −3 lines
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api
api/beta/sessions/archive
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api/beta/sessions/archive
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"id": "claude-opus-5",
"id": "claude-opus-5-5",
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api
api/beta/sessions
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apichanged
api/beta/sessions
Replacement model. Accepts the model string, e.g. `claude-opus-5`, or a `model_config` object. Omit to use the agent's model.
Replacement model. Accepts the model string, e.g. `claude-opus-5-5`, or a `model_config` object. Omit to use the agent's model.
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"id": "claude-opus-5",
+15 −15 lines
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api
api/beta/organization/usage_report/retrieve_messages
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apichanged
api/beta/organization/usage_report/retrieve_messages
"model": "claude-opus-5",
"model": "claude-opus-5-5",
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api
api/beta/organization/usage_report/retrieve_claude_code
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api/beta/organization/usage_report/retrieve_claude_code
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-sonnet-5",
"model": "claude-sonnet-5-5",
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api
api/beta/organization/usage_report
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apichanged
api/beta/organization/usage_report
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-sonnet-5",
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api
api/beta/organization/spend_limits/set
±changed
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apichanged
api/beta/organization/spend_limits/set
Read-only. `false` when extra usage is switched off for this organization (`organization` limit) or for this member (`user` limit); `amount` is kept and applies again when it's
Read-only. `false` when extra usage is switched off for this organization (`organization` limit); `amount` is kept and applies again when it's switched back on. Always `true` f
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api
api/beta/organization/spend_limits/retrieve
±changed
+1−1
apichanged
api/beta/organization/spend_limits/retrieve
Read-only. `false` when extra usage is switched off for this organization (`organization` limit) or for this member (`user` limit); `amount` is kept and applies again when it's
Read-only. `false` when extra usage is switched off for this organization (`organization` limit); `amount` is kept and applies again when it's switched back on. Always `true` f
+1 −1 lines
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api
api/beta/organization/spend_limits/list
±changed
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apichanged
api/beta/organization/spend_limits/list
A Claude Console organization's limits come in an order that is stable across
pages. A Claude Enterprise organization's are grouped by scope type,
in the order `organization`, `seat_tier`, `rbac_group`,
`organization_service`, `user`; within a type they come in a fixed order that
is not creation order. Listing Claude Console limits is in an early access
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api
api/beta/organization/spend_limits/increase_requests/approve
±changed
+1−1
apichanged
api/beta/organization/spend_limits/increase_requests/approve
Read-only. `false` when extra usage is switched off for this organization (`organization` limit) or for this member (`user` limit); `amount` is kept and applies again when it's
Read-only. `false` when extra usage is switched off for this organization (`organization` limit); `amount` is kept and applies again when it's switched back on. Always `true` f
+1 −1 lines
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api
api/beta/organization/spend_limits/increase_requests
±changed
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apichanged
api/beta/organization/spend_limits/increase_requests
Read-only. `false` when extra usage is switched off for this organization (`organization` limit) or for this member (`user` limit); `amount` is kept and applies again when it's
Read-only. `false` when extra usage is switched off for this organization (`organization` limit); `amount` is kept and applies again when it's switched back on. Always `true` f
Read-only. `false` when extra usage is switched off for this organization (`organization` limit) or for this member (`user` limit); `amount` is kept and applies again when it
Read-only. `false` when extra usage is switched off for this organization (`organization` limit); `amount` is kept and applies again when it's switched back on. Always `true`
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api
api/beta/organization/spend_limits/effective/list
±changed
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apichanged
api/beta/organization/spend_limits/effective/list
Paginates by member, so a member's periods never split across pages. Listing
Claude Console limits is in an early access preview. To request access,
contact your Anthropic account team.
Paginates by member, so a member's periods never split across pages.
Supported for Claude Enterprise organizations only, not for Claude Console
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api
api/beta/organization/spend_limits/effective
±changed
+3−3
apichanged
api/beta/organization/spend_limits/effective
Paginates by member, so a member's periods never split across pages. Listing
Claude Console limits is in an early access preview. To request access,
contact your Anthropic account team.
Paginates by member, so a member's periods never split across pages.
Supported for Claude Enterprise organizations only, not for Claude Console
+3 −3 lines
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api
api/beta/organization/spend_limits
±changed
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apichanged
api/beta/organization/spend_limits
Read-only. `false` when extra usage is switched off for this organization (`organization` limit) or for this member (`user` limit); `amount` is kept and applies again when it's
Read-only. `false` when extra usage is switched off for this organization (`organization` limit); `amount` is kept and applies again when it's switched back on. Always `true` f
Read-only. `false` when extra usage is switched off for this organization (`organization` limit) or for this member (`user` limit); `amount` is kept and applies again when it's
Read-only. `false` when extra usage is switched off for this organization (`organization` limit); `amount` is kept and applies again when it's switched back on. Always `true` f
A Claude Console organization's limits come in an order that is stable across
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api
api/beta/organization/cost_report/retrieve
±changed
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apichanged
api/beta/organization/cost_report/retrieve
"description": "Claude Opus 5 Usage - Input Tokens",
"description": "Claude Opus 5.5 Usage - Input Tokens",
"model": "claude-opus-5",
"model": "claude-opus-5-5",
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api
api/beta/organization/cost_report
±changed
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apichanged
api/beta/organization/cost_report
"description": "Claude Opus 5 Usage - Input Tokens",
"description": "Claude Opus 5.5 Usage - Input Tokens",
"model": "claude-opus-5",
"model": "claude-opus-5-5",
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api
api/beta/organization/analytics/user_usage_report/list
±changed
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api/beta/organization/analytics/user_usage_report/list
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it can
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it ca
"model": "claude-opus-5",
"model": "claude-opus-5-5",
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api
api/beta/organization/analytics/user_usage_report
±changed
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apichanged
api/beta/organization/analytics/user_usage_report
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it can
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it ca
"model": "claude-opus-5",
"model": "claude-opus-5-5",
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/organization/analytics/user_cost_report/list
±changed
+2−2
apichanged
api/beta/organization/analytics/user_cost_report/list
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it can
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it ca
"model": "claude-opus-5",
"model": "claude-opus-5-5",
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/organization/analytics/user_cost_report
±changed
+2−2
apichanged
api/beta/organization/analytics/user_cost_report
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it can
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it ca
"model": "claude-opus-5",
"model": "claude-opus-5-5",
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/organization/analytics/usage_report/list
±changed
+2−2
apichanged
api/beta/organization/analytics/usage_report/list
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it ca
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it
"model": "claude-opus-5",
"model": "claude-opus-5-5",
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/organization/analytics/usage_report
±changed
+2−2
apichanged
api/beta/organization/analytics/usage_report
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it ca
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it
"model": "claude-opus-5",
"model": "claude-opus-5-5",
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/organization/analytics/cost_report/list
±changed
+2−2
apichanged
api/beta/organization/analytics/cost_report/list
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it ca
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it
"model": "claude-opus-5",
"model": "claude-opus-5-5",
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/organization/analytics/cost_report
±changed
+2−2
apichanged
api/beta/organization/analytics/cost_report
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it ca
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it
"model": "claude-opus-5",
"model": "claude-opus-5-5",
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/organization/analytics
±changed
+14−14
apichanged
api/beta/organization/analytics
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it can
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it ca
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it ca
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5-5`). Null unless `model` is in `group_by[]`; it
Model that produced the usage or cost, as a model name in the form the `models[]` filter accepts (for example, `claude-opus-5`). Null unless `model` is in `group_by[]`; it can
+14 −14 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/organization
±changed
+25−27
apichanged
api/beta/organization
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-sonnet-5",
+25 −27 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/models/retrieve
±changed
+3−3
apichanged
api/beta/models/retrieve
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"created_at": "2026-07-24T00:00:00Z",
"created_at": "2026-09-21T00:00:00Z",
"display_name": "Claude Opus 5",
+3 −3 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/models/list
±changed
+3−3
apichanged
api/beta/models/list
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"created_at": "2026-07-24T00:00:00Z",
"created_at": "2026-09-21T00:00:00Z",
"display_name": "Claude Opus 5",
+3 −3 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/models
±changed
+6−6
apichanged
api/beta/models
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"created_at": "2026-07-24T00:00:00Z",
"created_at": "2026-09-21T00:00:00Z",
"display_name": "Claude Opus 5",
+6 −6 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/messages/create
±changed
+2−2
apichanged
api/beta/messages/create
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-opus-5",
"model": "claude-opus-5-5",
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/messages/count_tokens
±changed
+1−1
apichanged
api/beta/messages/count_tokens
"model": "claude-opus-5",
"model": "claude-opus-5-5",
+1 −1 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/messages/batches/create
±changed
+1−1
apichanged
api/beta/messages/batches/create
"model": "claude-opus-5"
"model": "claude-opus-5-5"
+1 −1 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/messages/batches
±changed
+1−1
apichanged
api/beta/messages/batches
"model": "claude-opus-5"
"model": "claude-opus-5-5"
+1 −1 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/messages
±changed
+4−4
apichanged
api/beta/messages
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"model": "claude-opus-5",
+4 −4 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/agents/versions/list
±changed
+1−1
apichanged
api/beta/agents/versions/list
"id": "claude-opus-5",
"id": "claude-opus-5-5",
+1 −1 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/agents/versions
±changed
+1−1
apichanged
api/beta/agents/versions
"id": "claude-opus-5",
"id": "claude-opus-5-5",
+1 −1 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/agents/update
±changed
+2−2
apichanged
api/beta/agents/update
Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview?sdk_languages=http#latest-models-comparison), e.g. `claude-opus-5`,
Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview?sdk_languages=http#latest-models-comparison), e.g. `claude-opus-5-5`
"id": "claude-opus-5",
"id": "claude-opus-5-5",
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/agents/retrieve
±changed
+1−1
apichanged
api/beta/agents/retrieve
"id": "claude-opus-5",
"id": "claude-opus-5-5",
+1 −1 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/agents/list
±changed
+1−1
apichanged
api/beta/agents/list
"id": "claude-opus-5",
"id": "claude-opus-5-5",
+1 −1 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/agents/create
±changed
+3−3
apichanged
api/beta/agents/create
Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview?sdk_languages=http#latest-models-comparison), e.g. `claude-opus-5`,
Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview?sdk_languages=http#latest-models-comparison), e.g. `claude-opus-5-5`
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"id": "claude-opus-5",
+3 −3 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/agents/archive
±changed
+1−1
apichanged
api/beta/agents/archive
"id": "claude-opus-5",
"id": "claude-opus-5-5",
+1 −1 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta/agents
±changed
+9−9
apichanged
api/beta/agents
Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview?sdk_languages=http#latest-models-comparison), e.g. `claude-opus-5`,
Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview?sdk_languages=http#latest-models-comparison), e.g. `claude-opus-5-5`
"model": "claude-opus-5",
"model": "claude-opus-5-5",
"id": "claude-opus-5",
+9 −9 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/beta
±changed
+58−60
apichanged
api/beta
"id": "claude-opus-5",
"id": "claude-opus-5-5",
"created_at": "2026-07-24T00:00:00Z",
"created_at": "2026-09-21T00:00:00Z",
"display_name": "Claude Opus 5",
+58 −60 lines
Recorded here 12 Oct 2026 23:07 UTC
api
agents-and-tools/tool-use/tool-reference
±changed
+13−13
apichanged
agents-and-tools/tool-use/tool-reference
| Tool | `type`
| -------------------------------------------------------------------------------------------------------- | -----------------------------------------------------------------------
| [Web search tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-search-tool) | `web_search_20260318` `web_search_20260209` `web_search_20250305`
| [Web fetch tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/web-fetch-tool) | `web_fetch_20260318` `web_fetch_20260309` `web_fetch_20260209` `web_fet
| [Code execution tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool) | `code_execution_20260521` `code_execution_20260120` `code_execution_202
+13 −13 lines
Recorded here 12 Oct 2026 23:07 UTC
api
agents-and-tools/tool-use/fine-grained-tool-streaming
±changed
+1−1
apichanged
agents-and-tools/tool-use/fine-grained-tool-streaming
} catch (JsonException $e) {
} catch (\JsonException $e) {
+1 −1 lines
Recorded here 12 Oct 2026 23:07 UTC
api
agents-and-tools/tool-use/computer-use-tool
±changed
+2−2
apichanged
agents-and-tools/tool-use/computer-use-tool
default => throw new RuntimeException("Unknown or unimplemented member: {$name}"),
default => throw new \RuntimeException("Unknown or unimplemented member: {$name}"),
} catch (Throwable $e) {
} catch (\Throwable $e) {
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
agents-and-tools/tool-use/build-a-tool-using-agent
±changed
+4−4
apichanged
agents-and-tools/tool-use/build-a-tool-using-agent
throw new InvalidArgumentException('Too many attendees (max 10)');
throw new \InvalidArgumentException('Too many attendees (max 10)');
throw new InvalidArgumentException("Unknown tool: {$name}");
throw new \InvalidArgumentException("Unknown tool: {$name}");
} catch (Exception $e) {
+4 −4 lines
Recorded here 12 Oct 2026 23:07 UTC
api
agents-and-tools/tool-use/browser-use-tool
±changed
+2−2
apichanged
agents-and-tools/tool-use/browser-use-tool
default => throw new RuntimeException("Unknown or unimplemented member: {$name}"),
default => throw new \RuntimeException("Unknown or unimplemented member: {$name}"),
} catch (Throwable $e) {
} catch (\Throwable $e) {
+2 −2 lines
Recorded here 12 Oct 2026 23:07 UTC
api
agents-and-tools/tool-use/advisor-tool
±changed
+16−16
apichanged
agents-and-tools/tool-use/advisor-tool
| Executor models | Advisor models
| ------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------
| Claude Haiku 4.5 (claude-haiku-4-5) | Claude Mythos 5.1 (claude-mythos-5-1) Claude Fable 5.1 (claude-fable-5-1) Claude Mythos 5 (claude-mythos-5) Claude Fable 5 (claude-fable-5
| Claude Haiku 5.5 (claude-haiku-5-5) | Claude Mythos 5.1 (claude-mythos-5-1) Claude Fable 5.1 (claude-fable-5-1) Claude Mythos 5 (claude-mythos-5) Claude Fable 5 (claude-fable-5
| Claude Sonnet 4.6 (claude-sonnet-4-6) | Claude Mythos 5.1 (claude-mythos-5-1) Claude Fable 5.1 (claude-fable-5-1) Claude Mythos 5 (claude-mythos-5) Claude Fable 5 (claude-fable-5
+16 −16 lines
Recorded here 12 Oct 2026 23:07 UTC
api
about-claude/use-case-guides/customer-support-chat
±changed
+3−3
apichanged
about-claude/use-case-guides/customer-support-chat
throw new RuntimeException('An error occurred: Unexpected response type');
throw new \RuntimeException('An error occurred: Unexpected response type');
throw new RuntimeException('An error occurred: Unexpected response type');
throw new \RuntimeException('An error occurred: Unexpected response type');
throw new RuntimeException('An unexpected tool was used');
+3 −3 lines
Recorded here 12 Oct 2026 23:07 UTC
api
about-claude/use-case-guides/content-moderation
±changed
+4−4
apichanged
about-claude/use-case-guides/content-moderation
?? throw new RuntimeException('Expected a text block in the response.');
?? throw new \RuntimeException('Expected a text block in the response.');
?? throw new RuntimeException('Expected a text block in the response.');
?? throw new \RuntimeException('Expected a text block in the response.');
?? throw new RuntimeException('Expected a text block in the response.');
+4 −4 lines
Recorded here 12 Oct 2026 23:07 UTC
api
api/skills/versions/retrieve
±changed
+1−1
apichanged
api/skills/versions/retrieve
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+1 −1 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/skills/versions/list
±changed
+1−1
apichanged
api/skills/versions/list
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+1 −1 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/skills/versions/delete
±changed
+1−1
apichanged
api/skills/versions/delete
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+1 −1 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/skills/versions/create
±changed
+1−1
apichanged
api/skills/versions/create
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+1 −1 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/skills/versions
±changed
+4−4
apichanged
api/skills/versions
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
+4 −4 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/skills/retrieve
±changed
+1−1
apichanged
api/skills/retrieve
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+1 −1 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/skills/list
±changed
+1−1
apichanged
api/skills/list
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+1 −1 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/skills/delete
±changed
+1−1
apichanged
api/skills/delete
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+1 −1 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/skills/create
±changed
+1−1
apichanged
api/skills/create
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+1 −1 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/skills
±changed
+8−8
apichanged
api/skills
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
+8 −8 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/organization/workspaces/update
±changed
+1−1
apichanged
api/organization/workspaces/update
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+1 −1 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/organization/workspaces/service_accounts/update
±changed
+2−2
apichanged
api/organization/workspaces/service_accounts/update
**Requires an OAuth access token with the `org:admin` scope**, from `ant auth login --scope org:admin` or a workload identity federation rule; Admin API keys are not accepted. See
**Requires an OAuth access token with the `org:admin` scope**, from `ant auth login --scope org:admin` or a workload identity federation rule; Admin API keys are not accepted. See
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+2 −2 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/organization/workspaces/service_accounts/retrieve
±changed
+2−2
apichanged
api/organization/workspaces/service_accounts/retrieve
**Requires an OAuth access token with the `org:admin` scope**, from `ant auth login --scope org:admin` or a workload identity federation rule; Admin API keys are not accepted. See
**Requires an OAuth access token with the `org:admin` scope**, from `ant auth login --scope org:admin` or a workload identity federation rule; Admin API keys are not accepted. See
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+2 −2 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/organization/workspaces/service_accounts/remove
±changed
+2−2
apichanged
api/organization/workspaces/service_accounts/remove
**Requires an OAuth access token with the `org:admin` scope**, from `ant auth login --scope org:admin` or a workload identity federation rule; Admin API keys are not accepted. See
**Requires an OAuth access token with the `org:admin` scope**, from `ant auth login --scope org:admin` or a workload identity federation rule; Admin API keys are not accepted. See
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+2 −2 lines
Recorded here 12 Oct 2026 06:37 UTC
api
api/organization/workspaces/service_accounts/list
±changed
+2−2
apichanged
api/organization/workspaces/service_accounts/list
**Requires an OAuth access token with the `org:admin` scope**, from `ant auth login --scope org:admin` or a workload identity federation rule; Admin API keys are not accepted. See
**Requires an OAuth access token with the `org:admin` scope**, from `ant auth login --scope org:admin` or a workload identity federation rule; Admin API keys are not accepted. See
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).
+2 −2 lines
Recorded here 12 Oct 2026 06:37 UTC
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