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137137

138138 - `"webhooks-2026-10-07"`

139139

140 - `"message-threads-2026-08-12"`

141

142 - `"analytics-usage-cost-2026-08-24"`

143

140144- `"anthropic-workspace-id": optional string`

141145

142146 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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133133

134134 - `"webhooks-2026-10-07"`

135135

136 - `"message-threads-2026-08-12"`

137

138 - `"analytics-usage-cost-2026-08-24"`

139

136140- `"anthropic-workspace-id": optional string`

137141

138142 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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137137

138138 - `"webhooks-2026-10-07"`

139139

140 - `"message-threads-2026-08-12"`

141

142 - `"analytics-usage-cost-2026-08-24"`

143

140144- `"anthropic-workspace-id": optional string`

141145

142146 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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149149

150150 - `"webhooks-2026-10-07"`

151151

152 - `"message-threads-2026-08-12"`

153

154 - `"analytics-usage-cost-2026-08-24"`

155

152156- `"anthropic-workspace-id": optional string`

153157

154158 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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137137

138138 - `"webhooks-2026-10-07"`

139139

140 - `"message-threads-2026-08-12"`

141

142 - `"analytics-usage-cost-2026-08-24"`

143

140144- `"anthropic-workspace-id": optional string`

141145

142146 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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137137

138138 - `"webhooks-2026-10-07"`

139139

140 - `"message-threads-2026-08-12"`

141

142 - `"analytics-usage-cost-2026-08-24"`

143

140144- `"anthropic-workspace-id": optional string`

141145

142146 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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137137

138138 - `"webhooks-2026-10-07"`

139139

140 - `"message-threads-2026-08-12"`

141

142 - `"analytics-usage-cost-2026-08-24"`

143

140144- `"anthropic-workspace-id": optional string`

141145

142146 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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133133

134134 - `"webhooks-2026-10-07"`

135135

136 - `"message-threads-2026-08-12"`

137

138 - `"analytics-usage-cost-2026-08-24"`

139

136140- `"anthropic-workspace-id": optional string`

137141

138142 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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143143

144144 - `"webhooks-2026-10-07"`

145145

146 - `"message-threads-2026-08-12"`

147

148 - `"analytics-usage-cost-2026-08-24"`

149

146150- `"anthropic-workspace-id": optional string`

147151

148152 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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133133

134134 - `"webhooks-2026-10-07"`

135135

136 - `"message-threads-2026-08-12"`

137

138 - `"analytics-usage-cost-2026-08-24"`

139

136140- `"anthropic-workspace-id": optional string`

137141

138142 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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133133

134134 - `"webhooks-2026-10-07"`

135135

136 - `"message-threads-2026-08-12"`

137

138 - `"analytics-usage-cost-2026-08-24"`

139

136140- `"anthropic-workspace-id": optional string`

137141

138142 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

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143143

144144 - `"webhooks-2026-10-07"`

145145

146 - `"message-threads-2026-08-12"`

147

148 - `"analytics-usage-cost-2026-08-24"`

149

146150### Body parameters

147151

148152- `max_tokens_to_sample: number`

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141141

142142 - `"webhooks-2026-10-07"`

143143

144 - `"message-threads-2026-08-12"`

145

146 - `"analytics-usage-cost-2026-08-24"`

147

144148## Body parameters

145149

146150- `max_tokens_to_sample: number`

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31883188

31893189 - `sent_by_user_id: string or null`

31903190

3191 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`.

3191 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`. Can also be null on an agent-owned session, where several people may take part, when the turn cannot be attributed to one human account (for example, no sender was recorded).

31923192

31933193- `next_page: string or null`

31943194

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986986

987987 - `sent_by_user_id: string or null`

988988

989 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`.

989 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`. Can also be null on an agent-owned session, where several people may take part, when the turn cannot be attributed to one human account (for example, no sender was recorded).

990990

991991- `next_page: string or null`

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453453

454454 - `sent_by_user_id: string or null`

455455

456 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`.

456 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`. Can also be null on an agent-owned session, where several people may take part, when the turn cannot be attributed to one human account (for example, no sender was recorded).

457457

458458- `next_page: string or null`

459459

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198198

199199 - `sent_by_user_id: string or null`

200200

201 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`.

201 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`. Can also be null on an agent-owned session, where several people may take part, when the turn cannot be attributed to one human account (for example, no sender was recorded).

202202

203203- `next_page: string or null`

204204

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441441

442442 - `sent_by_user_id: string or null`

443443

444 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`.

444 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`. Can also be null on an agent-owned session, where several people may take part, when the turn cannot be attributed to one human account (for example, no sender was recorded).

445445

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196196

197197 - `sent_by_user_id: string or null`

198198

199 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`.

199 Identifier of the human account that sent this turn on an agent-owned session. Null on user-owned sessions, where every user-role turn was sent by the session's `user`. Can also be null on an agent-owned session, where several people may take part, when the turn cannot be attributed to one human account (for example, no sender was recorded).

200200

201201- `next_page: string or null`

202202

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364364 "deprecated_at": "2019-12-27T18:11:19.117Z",

365365 "display_name": "Claude Opus 5.5",

366366 "lifecycle": "active",

367 "line": "haiku",

367 "line": "opus",

368368 "max_input_tokens": 0,

369369 "max_tokens": 0,

370370 "retires_at": "2019-12-27T18:11:19.117Z",

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698698 "deprecated_at": "2019-12-27T18:11:19.117Z",

699699 "display_name": "Claude Opus 5.5",

700700 "lifecycle": "active",

701 "line": "haiku",

701 "line": "opus",

702702 "max_input_tokens": 0,

703703 "max_tokens": 0,

704704 "retires_at": "2019-12-27T18:11:19.117Z",

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362362 "deprecated_at": "2019-12-27T18:11:19.117Z",

363363 "display_name": "Claude Opus 5.5",

364364 "lifecycle": "active",

365 "line": "haiku",

365 "line": "opus",

366366 "max_input_tokens": 0,

367367 "max_tokens": 0,

368368 "retires_at": "2019-12-27T18:11:19.117Z",

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324324 "deprecated_at": "2019-12-27T18:11:19.117Z",

325325 "display_name": "Claude Opus 5.5",

326326 "lifecycle": "active",

327 "line": "haiku",

327 "line": "opus",

328328 "max_input_tokens": 0,

329329 "max_tokens": 0,

330330 "retires_at": "2019-12-27T18:11:19.117Z",

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574574

575575Claude Models on Google Cloud (Anthropic managed) bills through Google Cloud Marketplace. Anthropic meters your usage. It reports the usage to Google Cloud in Claude Consumption Units. One Claude Consumption Unit is $0.01 USD. The charges appear on your Google Cloud bill. Anthropic doesn’t send a separate invoice.

576576

577View usage and cost data on the **Usage** and **Cost** pages in the [Claude Console](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed#using-the-claude-console).

577View usage and cost data on the **Usage** and **Cost** pages in the [Claude Console](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed#using-the-claude-console), or query it with the [Usage and Cost Analytics API](https://platform.claude.com/docs/en/manage-claude/usage-cost-analytics-api).

578578

579579If you have a Google Cloud spend commitment, usage counts toward it the way other Marketplace purchases do.

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578578* **HIPAA readiness:** Anthropic’s HIPAA-ready program is not available. See [API and data retention](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention).

579579* **Computer use and browser use toolsets:** `computer_toolset_20260801` and `browser_toolset_20260801` are not currently available on Claude Platform on AWS. The beta computer use tool versions remain available for the models listed under [Earlier tool versions](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#earlier-tool-versions).

580580

581- **Admin API:** Workspace endpoints (create, get, list, update, and archive on `/v1/organizations/workspaces`), external key endpoints (register, get, list, update, and delete on `/v1/organizations/external_keys`, for [CMEK](https://platform.claude.com/docs/en/manage-claude/cmek); keys are validated when attached to a workspace rather than through a validate endpoint), and the [telemetry destination endpoints](https://platform.claude.com/docs/en/api/claude-platform-on-aws-iam-actions#telemetry-destinations) are available. Other Admin API endpoints (organization members, workspace members, invites, API keys, usage reports, cost reports, and rate limit reports) are not currently available. View usage and cost data in the [Claude Console](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws#using-the-claude-console) instead. AWS IAM manages organization membership.

581- **Admin API:** Workspace endpoints (create, get, list, update, and archive on `/v1/organizations/workspaces`), external key endpoints (register, get, list, update, and delete on `/v1/organizations/external_keys`, for [CMEK](https://platform.claude.com/docs/en/manage-claude/cmek); keys are validated when attached to a workspace rather than through a validate endpoint), the [telemetry destination endpoints](https://platform.claude.com/docs/en/api/claude-platform-on-aws-iam-actions#telemetry-destinations), and the [Usage and Cost Analytics API](https://platform.claude.com/docs/en/manage-claude/usage-cost-analytics-api) endpoints are available. Other Admin API endpoints (organization members, workspace members, invites, API keys, the legacy [Usage and Cost API](https://platform.claude.com/docs/en/manage-claude/usage-cost-api), and rate limit reports) are not available. AWS IAM manages organization membership.

582582- **Workspace member management:** Adding or removing users from individual workspaces is not available. AWS IAM policies on workspace ARNs control access.

583583- **Claude Code workspace and Analytics API:** The Claude Code workspace with automatic rate limits is not available. Claude Code usage appears in the general usage view rather than a dedicated screen.

584584- **OAuth authentication:** Not supported. Use SigV4 or API key authentication.

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869869

870870## Monitoring and logging

871871

872AWS CloudTrail can capture all requests to Claude Platform on AWS. Workspace, external key, telemetry destination, compliance, vault, and webhook operations are logged as Management events by default. Inference, batch, file, skill, model, user profile, and Claude Managed Agents operations (other than vaults and webhooks) are classified as Data events and require explicit data event logging configuration, which incurs additional CloudTrail charges. See the [IAM actions reference](https://platform.claude.com/docs/en/api/claude-platform-on-aws-iam-actions#route-to-action-mapping) for the full event type classification and the [AWS CloudTrail documentation](https://docs.aws.amazon.com/awscloudtrail/latest/userguide/) for configuration details.

872AWS CloudTrail can capture all requests to Claude Platform on AWS. Workspace, external key, telemetry destination, compliance, vault, and webhook operations are logged as Management events by default. Inference, batch, file, skill, model, user profile, usage and cost report, and Claude Managed Agents operations (other than vaults and webhooks) are classified as Data events and require explicit data event logging configuration, which incurs additional CloudTrail charges. See the [IAM actions reference](https://platform.claude.com/docs/en/api/claude-platform-on-aws-iam-actions#route-to-action-mapping) for the full event type classification and the [AWS CloudTrail documentation](https://docs.aws.amazon.com/awscloudtrail/latest/userguide/) for configuration details.

873873

874874### Request IDs

875875

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27712771 ```

27722772</CodeGroup>

27732773

2774On Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5, remove the `thinking` and `redacted_thinking` blocks from any assistant turn you re-insert after the compaction block, or send `thinking.block_binding.prefix_mismatch_behavior: "drop_block"` with the `thinking-binding-controls-2026-08-01` [beta header](https://platform.claude.com/docs/en/api/beta-headers). Those blocks were produced when the full history was present, so they no longer pass the [conversation check](https://platform.claude.com/docs/en/build-with-claude/thinking#preserved-in-conversation). Where the check is enforced, the continuation request is rejected with a 400 error. The preserved text and tool blocks can stay as they are. Letting the API summarize everything, without re-inserting earlier turns, avoids this. On Claude Sonnet 5.5, `block_binding` works only with `thinking: {"type": "adaptive"}`. With `between_tools`, remove the blocks instead. On Claude Haiku 5.5, `block_binding` works only with `thinking: {"type": "adaptive"}`, so with `thinking: {"type": "disabled"}`, remove the blocks instead.

2774On Claude Fable 5.1, Claude Mythos 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5, thinking blocks in any assistant turn you reinsert after the compaction block fail the [prefix check](https://platform.claude.com/docs/en/build-with-claude/thinking#preserved-in-conversation), because they were produced when the full history was present. Strip the `thinking` and `redacted_thinking` blocks from those turns. Alternatively, send `thinking.block_binding.prefix_mismatch_behavior: "drop_block"` with the `thinking-binding-controls-2026-08-01` [beta header](https://platform.claude.com/docs/en/api/beta-headers). The preserved text and tool blocks can stay as they are. Letting the API summarize everything, without reinserting earlier turns, avoids this. On Claude Sonnet 5.5 and Claude Haiku 5.5, `block_binding` works only with `thinking: {"type": "adaptive"}`. With any other thinking setting on those models, strip the blocks.

27752775

27762776Here’s an example that uses `pause_after_compaction` to preserve the prior exchange and the current user message (three messages total) instead of summarizing them. It keeps their text and tool blocks unchanged, removes the `thinking` and `redacted_thinking` blocks from the preserved assistant turn, and drops that turn if nothing else is left:

27772777

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8989

9090Context editing is applied server-side before the prompt reaches Claude. Your client application maintains the full, unmodified conversation history. You do not need to sync your client state with the edited version. Continue managing your full conversation history locally as you normally would.

9191

92On Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5, server-side context management never invalidates thinking blocks. Client-side edits to earlier turns can invalidate the thinking blocks in every later assistant turn. For new accounts created on or after August 31, 2026, a request that replays an invalidated block is rejected unless you opt into dropping it. See [Keeping the prefix unchanged](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#prefix-check).

92On Claude Fable 5.1, Claude Mythos 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5, server-side context management never invalidates thinking blocks. Client-side edits to earlier turns can invalidate the thinking blocks in every later assistant turn. See [Keeping the prefix unchanged](https://platform.claude.com/docs/en/build-with-claude/preserved-thinking#prefix-check).

9393

9494### Context editing and prompt caching

9595

One read of Claude Developer Platformapi-20261029T173726Z

What this read moved

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