# Changelog Track implemented API and documentation changes > Section: Overview > Last updated: **2026-10-31**. > API version: **v1 (Latest)**. OpenAPI publication: **2026-11-08**. ## BeliefState AI integration availability Published: 2026-10-31. Tags: Docs, MCP. Find BeliefState across its published AI connections, developer MCP setups and OpenClaw skill. - BeliefState is published on ChatGPT, shares that OpenAI plugin with Codex, and is available through the Claude and Glama connectors. Cursor and Claude Code have developer MCP setup; OpenClaw has a published ClawHub skill. - Connection-page search and social metadata, the machine-readable homepage, agent instructions and discovery indexes now identify these connection options. Ask your agent about BeliefState. - The October 30 OpenAI acceptance verified an eighteen-tool public catalog. Author track record and the newer brief and refresh definitions remain pending; published catalogs do not certify every current direct-MCP tool or open admission for unknown OAuth clients. ## Public Mintlify documentation Published: 2026-09-26. Tags: Docs. Public Mintlify documentation replaces the former local HTML documentation pages. - Mintlify now hosts public HTML documentation, Markdown pages, llms.txt, and a public documentation MCP endpoint at docs.beliefstate.ai. - The former /docs HTML pages redirect to Mintlify. Existing /docs/*.md, /docs.md, and /docs/mcp endpoints remain available for machine clients while replacement parity is checked. - Hand written guides require review when API behavior changes. Generated API examples contain schema placeholders, not live investor records. ## A smaller research API Published: 2026-09-09. Tags: Docs, API, MCP. One ticker research view, one belief query, one source directory and one coverage query replace overlapping standalone operations. - The data API now has four resources: /v1/brief, /v1/beliefs, /v1/sources and /v1/tickers. /v1/status remains an access utility. Eleven standalone routes are retired without aliases. - Use belief_id on /v1/beliefs for full claims, evidence, revisions and outcomes. Use changed_since and person_id for filtered records. Source search, domain and ID selection are filters on /v1/sources. - MCP and A2A expose get_brief, get_beliefs and get_tickers. Refresh discovery and regenerate clients. The four API documentation entries are direct links without duplicate group headings. ## Automatic documentation social previews Published: 2026-09-04. Tags: Docs. Page specific social cards now make shared documentation links identifiable before opening them. - Every documentation URL now generates its own 1200 by 630 social preview automatically. - Open Graph and X metadata use the canonical page title, description, and URL instead of the generic site card. - The page catalog remains the single content source, so new documentation pages inherit previews without manual artwork or configuration. ## Documentation freshness metadata Published: 2026-09-04. Tags: Docs. Freshness metadata now tells people and agents when each documentation contract was last updated. - Every documentation page now shows an exact, content owned last updated date. - Human pages, per page Markdown, search, and the full LLM corpus read the same freshness metadata. - Documentation checks reject missing, malformed, future, or stale dates, while scheduled health checks detect source changes newer than the declared date. ## API documentation versioning Published: 2026-09-04. Tags: Docs, API. Version context now makes the active API contract explicit without inventing an unsupported documentation snapshot. - Every documentation page now shows the supported v1 API contract with a Latest status. - A versioning reference distinguishes the route version, OpenAPI publication, payload schema, and endpoint lifecycle. - Multi version navigation activates only after a separate historical or new major snapshot exists; no fake history is presented. ## API lifecycle notices Published: 2026-09-04. Tags: Docs, API. API lifecycle labels and migration notices now make contract status explicit before integration. - Release gated API references now carry visible Preview labels on endpoint pages and in navigation. - Deprecated operations can publish an announcement date, optional removal date, replacement endpoint, and ordered migration steps. - Human pages and machine readable Markdown now expose the same API lifecycle state without adding visitor tracking. ## Changelog tag filtering Published: 2026-09-04. Tags: Docs. Shareable tag filters now make product changes easier to scan by surface. - Changelog tags now filter human readable updates with multi select AND matching. - Filter state lives in the URL, supports browser Back, and keeps unrelated query parameters intact. - Zero result combinations provide a clear recovery while Markdown and RSS remain complete. ## Synchronized code language Published: 2026-09-04. Tags: Docs, API. API reference pages now remember one privacy safe request language preference. - Selecting a request example language now keeps that choice across every API reference page and browser reload. - Open documentation tabs synchronize the same language preference without account or visitor tracking. - Invalid or unavailable browser storage fails safely to cURL while the current tab remains usable. ## Reusable documentation snippets Published: 2026-09-03. Tags: Docs. Reusable documentation content now keeps human and machine surfaces aligned by construction. - Eleven static documentation pages now render their sections from one typed reusable snippet registry. - Human pages, page navigation, per page Markdown, and llms-full.txt now consume the same canonical content. - The documentation checker rejects missing pages, orphaned snippets, duplicate anchors, invalid section IDs, and malformed shared tables. ## Machine readable documentation Published: 2026-09-03. Tags: Docs, MCP. Agents can discover, search, and read the same current documentation humans see. - Every public documentation page now has a stable .md URL and Accept header content negotiation. - llms-full.txt now contains the complete documentation corpus, while llms.txt stays a concise directory. - A public documentation MCP exposes search, read, resources, and bounded feedback. ## Unified capability discovery Published: 2026-09-03. Tags: API, Agents. One capability registry now keeps machine interfaces and their discovery metadata aligned. - REST, MCP, A2A, pricing operations, and documentation references now derive shared intelligence metadata from one capability catalog. - Well known API, MCP, A2A, and Agent Skills discovery documents now advertise implemented interfaces. - Four digest verifiable Agent Skills cover setup, security research, provenance audits, and comparable source history. ## Documentation feedback loop Published: 2026-09-03. Tags: Docs. Search and feedback now produce a small, privacy bounded documentation improvement loop. - Documentation search now ranks full page content, recognizes common intent aliases and typos, and shows a matching excerpt. - Unknown documentation URLs keep a 404 status and offer likely page matches. - Feedback excludes account and visitor identity. Contextual actions record only the action type and documentation page. - Every page includes a top of page Use with AI menu for Markdown, ChatGPT, Claude, Perplexity, Cursor, VS Code, and the public docs MCP server. ## Subscribe Follow the [changelog RSS feed](https://beliefstate.ai/changelog.xml) for machine-readable updates. ## Agent feedback Report unclear, stale, or incorrect documentation through [BeliefState support](https://beliefstate.ai/contact). Include this page URL and the smallest reproducible detail.