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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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glossary Claude Developer Platform · in the page about-claude/glossary …Fine-tuning can be useful for adapting a language model to a specific domain, task, or writing style, but it requires careful consideration of the fine-tuning data and the potential impact on the mode… optimizing-for-cost-and-intelligence Claude Developer Platform · in the page about-claude/models/optimizing-for-cost-and-intelligence …formation Seeking," arXiv:2510.20168, 2025. The 220 questions span 15 domains, each combining many-row collection with multi-hop retrieval; measured on the benchmark's standing row set, 3 runs per con… Create the full URL from the GitHub repository Claude Developer Platform · in the page about-claude/use-case-guides/legal-summarization …helps Claude better adapt to the specific requirements of your legal domain, improving its ability to summarize documents according to your standards. 4. **Iterative improvement:** Fine-tuning is no… PDF Processing Claude Developer Platform · in the page agents-and-tools/agent-skills/best-practices …S.md, REFERENCE.md, or EXAMPLES.md only when needed. #### Pattern 2: Domain-specific organization For Skills with multiple domains, organize content by domain to avoid loading irrelevant context. Wh… enterprise Claude Developer Platform · in the page agents-and-tools/agent-skills/enterprise …If the Skill references external URLs, verify they point to expected domains. 8. **Verify no data exfiltration patterns.** Look for instructions that read sensitive data and then write, send, or enco… PDF Processing Claude Developer Platform · in the page agents-and-tools/agent-skills/overview …lls Skills are reusable, filesystem-based resources that give Claude domain-specific expertise: workflows, context, and best practices that turn a general-purpose agent into a specialist. Unlike prom… quickstart Claude Developer Platform · in the page agents-and-tools/agent-skills/quickstart …01-skills-introduction) for examples of building your own Skills with domain-specific expertise. </Note> ## Step 1: List available Skills First, check what Skills are available. Use the Skills API t… concepts Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/concepts …network that the proxy routes to. Each upstream is exposed as one subdomain under your tunnel domain.… console Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/console …n the list, on the detail page, and in the agent MCP server picker. A domain of the form `abcd1234.tunnel.anthropic.com` is assigned automatically. </Step> <Step title="Optionally set up programm… Edit docker-compose.yaml: increment the integer in the setup service's Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/deploy-compose …-authentication-failures) if it errors. Retrieve your tunnel domain and export it for later steps: ```bash export TUNNEL_DOMAIN=$(sudo cat data/tunnel-domain) echo "$… deploy-helm Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/deploy-helm …Console-created tunnel; you'll also need its tunnel token and tunnel domain. * **A way for the chart to authenticate to the Tunnels API.** * **[Programmatic access](https://platform.claude.com/do… overview Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/overview …stname. Each MCP server you expose gets a hostname under your tunnel domain (for example, `docs.<your-tunnel-domain>`). You attach these hostnames to a Managed Agent session in the Claude Console, or… quickstart Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/quickstart …sample server is reachable from Claude at `https://echo.<your-tunnel-domain>/mcp` even though nothing is listening on a public port. ## What you need * [Docker and Docker Compose](https://docs.dock… reference Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/reference …| `30s` | | `tunnel_domain` | Base domain assigned to the tunnel. When set, route lookup strips this suffix from incoming hostnames… security Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/security …tunnel"> Archiving invalidates the tunnel token and detaches the domain. In the Console, [archive the tunnel](https://platform.claude.com/docs/en/agents-and-tools/mcp-tunnels/console#archive-a-tu… troubleshooting Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/troubleshooting …| `tunnel_domain` doesn't match the assigned domain, or `config.yaml` was edited without restarting. | Set `tunnel_domain` to the exact dom… advisor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/advisor-tool …prompt steering, the executor tends to under-call the advisor in some domains, particularly coding tasks. For coding tasks where you want consistent advisor timing and around two to three calls for ea… browser-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/browser-use-tool …e it the same way. 2. Restrict the hosts the browser can reach to a domain allowlist enforced at the network layer and re-checked in your `navigate` handler after redirects, and block loopback, link… computer-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/computer-use-tool …t information theft. 3. Limiting internet access to an allowlist of domains to reduce exposure to malicious content. 4. Asking a human to confirm decisions that might result in meaningful real-wor… Process results programmatically Claude Developer Platform · in the page agents-and-tools/tool-use/programmatic-tool-calling …ench](https://arxiv.org/abs/2506.07982) (airline, retail, and telecom domains), where each turn makes one or two sequential tool calls, programmatic tool calling left scores unchanged and cost roughly… server-tools Claude Developer Platform · in the page agents-and-tools/tool-use/server-tools …cks, pause_turn continuation, mixed server and client tool turns, and domain filtering." --- Server-executed tools share these mechanics: the `server_tool_use` block, `pause_turn` continuation, turns… web-fetch-tool Claude Developer Platform · in the page agents-and-tools/tool-use/web-fetch-tool …ses` parameter to limit the number of requests * Using the `allowed_domains` parameter to restrict to known safe domains </Warning> For model support, see the [Tool reference](https://platform.clau… web-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/web-search-tool …rrent web content with cited sources, optional dynamic filtering, and domain controls. --- <Note> For how zero data retention (ZDR) applies to this feature, see [API and data retention](https://pla… Admin Claude Developer Platform · in the page api/admin …rer $ANTHROPIC_OAUTH_TOKEN" \ -d '{ "email": "user@emaildomain.com", "role": "user" }' ``` ##### Response (200) ```json { "id": "invite_015gWxCN9Hfg2QhZwTK7Mdeu",… Analytics Claude Developer Platform · in the page api/admin/analytics …": 0, "science_weekly_active_user_count": 0 } ] } ``` ## Domain types ### Activity Summary - `ActivitySummary object` Response for GET /v1/organizations/analytics/summaries. - `su… Artifacts Claude Developer Platform · in the page api/admin/analytics/artifacts …"user_id": "user_id" } ], "next_page": "next_page" } ``` ## Domain types ### Artifact Usage - `ArtifactUsage object` Response for GET /v1/organizations/analytics/artifacts. `next_pag… Chat Projects Claude Developer Platform · in the page api/admin/analytics/chat_projects …"user_id": "user_id" } ], "next_page": "next_page" } ``` ## Domain types ### Chat Project Usage - `ChatProjectUsage object` Response for GET /v1/organizations/analytics/apps/chat/projec… Connectors Claude Developer Platform · in the page api/admin/analytics/connectors …"write_call_count": 0 } ], "next_page": "next_page" } ``` ## Domain types ### Connector Usage - `ConnectorUsage object` Response for GET /v1/organizations/analytics/connectors. - `dat… Cost Claude Developer Platform · in the page api/admin/analytics/cost …_page", "organization_id": "org_013FP9SaFPBg7Kw7fetjn6cF" } ``` ## Domain types ### Cost Bucket - `CostBucket object` - `data: array of object` Time buckets for this page, oldest first: o… Plugins Claude Developer Platform · in the page api/admin/analytics/plugins …"user_id": "user_id" } ], "next_page": "next_page" } ``` ## Domain types ### Plugin Usage - `PluginUsage object` Response for GET /v1/organizations/analytics/plugins. - `data: array… Skills Claude Developer Platform · in the page api/admin/analytics/skills …"user_id": "user_id" } ], "next_page": "next_page" } ``` ## Domain types ### Skill Usage - `SkillUsage object` Response for GET /v1/organizations/analytics/skills. - `data: array of… Usage Claude Developer Platform · in the page api/admin/analytics/usage …_page", "organization_id": "org_013FP9SaFPBg7Kw7fetjn6cF" } ``` ## Domain types ### Usage Bucket - `UsageBucket object` - `data: array of object` Time buckets for this page, oldest first:… Users Claude Developer Platform · in the page api/admin/analytics/users …type": "user" } } ], "next_page": "next_page" } ``` ## Domain types ### User Activity - `UserActivity object` Response for GET /v1/organizations/analytics/users. - `data: array… Cost Report Claude Developer Platform · in the page api/admin/cost_report …": true, "next_page": "page_MjAyNS0wNS0xNFQwMDowMDowMFo=" } ``` ## Domain types ### Cost Report - `CostReport object` - `data: array of object` List of time buckets for this page, oldest… External Keys Claude Developer Platform · in the page api/admin/external_keys …"status": "success", "type": "external_key_validation" } ``` ## Domain types ### External Key Create Response - `ExternalKeyCreateResponse object` CMEK external key config belonging to the… Federation Issuers Claude Developer Platform · in the page api/admin/federation_issuers …27.427722Z", "updated_by_actor_id": "updated_by_actor_id" } ``` ## Domain types ### Federation Issuer - `FederationIssuer object` Registered external OIDC identity provider. Records an exte… Federation Rules Claude Developer Platform · in the page api/admin/federation_rules …_id": "workspace_id", "workspace_ids": [ "string" ] } ``` ## Domain types ### Federation Rule - `FederationRule object` Authorization rule binding an external OIDC identity to Anthropic.… Workspaces Claude Developer Platform · in the page api/admin/federation_rules/workspaces …n_rule_workspace_deleted", "workspace_id": "workspace_id" } ``` ## Domain types ### Workspace List Response - `WorkspaceListResponse object` - `created_at: string` When this workspace was… Invites Claude Developer Platform · in the page api/admin/invites …rer $ANTHROPIC_OAUTH_TOKEN" \ -d '{ "email": "user@emaildomain.com", "role": "user" }' ``` #### Response (200) ```json { "id": "invite_015gWxCN9Hfg2QhZwTK7Mdeu",… Create Invite Claude Developer Platform · in the page api/admin/invites/create …rer $ANTHROPIC_OAUTH_TOKEN" \ -d '{ "email": "user@emaildomain.com", "role": "user" }' ``` ### Response (200) ```json { "id": "invite_015gWxCN9Hfg2QhZwTK7Mdeu", "… List Invites Claude Developer Platform · in the page api/admin/invites/list …"accepted_at": "2019-12-27T18:11:19.117Z", "email": "user@emaildomain.com", "expires_at": "2024-11-20T23:58:27.427722Z", "invited_at": "2024-10-30T23:58:27.427722Z", "rbac_gro… Get Invite Claude Developer Platform · in the page api/admin/invites/retrieve …", "accepted_at": "2019-12-27T18:11:19.117Z", "email": "user@emaildomain.com", "expires_at": "2024-11-20T23:58:27.427722Z", "invited_at": "2024-10-30T23:58:27.427722Z", "rbac_group_ids": [… MCP Tunnels Claude Developer Platform · in the page api/admin/mcp_tunnels …dable name for the Tunnel (1–255 characters), or `null` if unset. - `domain: string` Anthropic-assigned hostname for the Tunnel. MCP server URLs whose host is a subdomain of this value are route… Archive Tunnel Claude Developer Platform · in the page api/admin/mcp_tunnels/archive …dable name for the Tunnel (1–255 characters), or `null` if unset. - `domain: string` Anthropic-assigned hostname for the Tunnel. MCP server URLs whose host is a subdomain of this value are route… List Tunnels Claude Developer Platform · in the page api/admin/mcp_tunnels/list …ble name for the Tunnel (1–255 characters), or `null` if unset. - `domain: string` Anthropic-assigned hostname for the Tunnel. MCP server URLs whose host is a subdomain of this value are r… Get Tunnel Claude Developer Platform · in the page api/admin/mcp_tunnels/retrieve …dable name for the Tunnel (1–255 characters), or `null` if unset. - `domain: string` Anthropic-assigned hostname for the Tunnel. MCP server URLs whose host is a subdomain of this value are route… Tunnel Certificates Claude Developer Platform · in the page api/admin/mcp_tunnels/tunnel_certificates …l_01Hx9Kp2RtQvMn3sWbYdLcF8", "type": "tunnel_certificate" } ``` ## Domain types ### Tunnel Certificate Create Response - `TunnelCertificateCreateResponse object` - `id: string` ID of the… Organizations Claude Developer Platform · in the page api/admin/organizations …8", "name": "Organization Name", "type": "organization" } ``` ## Domain types ### Organization - `Organization object` - `id: string` ID of the Organization. format: uuid - `nam… Rate Limits Claude Developer Platform · in the page api/admin/rate_limits …"type": "rate_limit" } ], "next_page": "next_page" } ``` ## Domain types ### Rate Limit List Response - `RateLimitListResponse object` - `data: array of object` Rate-limit entries… RBAC Groups Claude Developer Platform · in the page api/admin/rbac_groups …p_012rppKaSVsmTo6NqRDXQXNF", "type": "rbac_group_deleted" } ``` ## Domain types ### Rbac Group - `RbacGroup object` - `id: string` ID of the RBAC Group. - `created_at: string` RFC…