# Release Notes Index > The latest product releases, indexed for agents. Release Notes Index tracks release notes, changelogs, and version updates across hundreds of developer tools and services, normalizes them into one registry, and serves them over a REST API, a hosted MCP server, an open-source CLI, and this site. Most reads are public — no account or API key required. Quick facts: - REST API base URL: `https://api.releases.sh/v1`. OpenAPI 3.1 spec: https://api.releases.sh/v1/openapi.json. Interactive reference: https://api.releases.sh/v1/docs. - Hosted MCP server (Streamable HTTP, read tools public, no key): `https://agents.releases.sh/mcp`. Claude Code: `claude mcp add --transport http releases https://agents.releases.sh/mcp`. Claude (web, desktop, mobile): https://claude.ai/directory/releases-index. - CLI: `npm install -g @buildinternet/releases` (or `brew install buildinternet/tap/releases`). Agent skills: `npx skills add buildinternet/releases`. - Pricing: free and open source — no paid plans. A free account raises API rate limits. Details: https://releases.sh/pricing.md. - Links below point to Markdown versions of each page. Any page on this site is also available as Markdown by appending `.md` to its URL (for example, https://releases.sh/docs/installation.md) or by sending `Accept: text/markdown` to the canonical URL. - Org and source pages have machine-readable suffixes — `.md` (LLM-friendly), `.json`, `.atom` — e.g. https://releases.sh/anthropic.md. ## When to use Releases Index Reach for the Index when the question is "what changed?" in the software you use, build on, or compete with: - Check what shipped across a stack this week — every release from the tools in use, including the ones that never got a version number. - Verify whether a specific fix or feature has actually landed before upgrading or debugging against it. - Watch a vendor: follow one company's releases across its blog, changelog, GitHub, and app-store notes. - See who has shipped integrations with a product recently. - Research roadmap and product-development opportunities: survey what the rest of the ecosystem is shipping as input for deciding what to build next. Public reads need no account or key. Fastest paths: `releases search ""` (CLI), the `search` and `whats_changed` MCP tools, or `GET https://api.releases.sh/v1/releases/latest`. The Index covers what shipped — for how-to/API-usage documentation of a library, use a docs index instead. ## Introduction - [Why](https://releases.sh/docs/why.md): Release Notes Index is changelog infrastructure built for agents — the Context7-equivalent for what shipped. One registry across GitHub releases, CHANGELOG files, marketing blogs, RSS, and more. ## Getting Started - [Overview](https://releases.sh/docs.md): Overview of Release Notes Index — a changelog index with a CLI, REST API, MCP server, and agent skills. - [Installation](https://releases.sh/docs/installation.md): Install the Releases CLI via Homebrew, npm, a one-line script, or precompiled binaries from GitHub Releases. - [Skills](https://releases.sh/docs/skills.md): Install Release Notes Index skills — auto-triggering playbooks that teach Claude Code, Codex, Cursor, and OpenCode how to use the CLI and MCP tools. - [Examples](https://releases.sh/docs/examples.md): Common CLI workflows for browsing, searching, and tracking releases. ## Guides - [Find a Changelog](https://releases.sh/docs/guides/find-a-changelog.md): A practical method for locating a product's changelog or release notes — common URL patterns, feed discovery, GitHub, provider fingerprints — plus the shortcut: an index that has already done it. - [Changelog to RSS](https://releases.sh/docs/guides/changelog-rss-feed.md): Get an Atom feed for any product's changelog — even ones that don't publish a feed. Append .atom to any Release Notes Index org, source, or collection page. Free, no account. - [Get Notified](https://releases.sh/docs/guides/release-notifications.md): Every way to get pushed a notification when a changelog updates — Slack and Discord messages, email digests, RSS, and signed webhooks for your own systems. ## For Owners - [Get Listed](https://releases.sh/docs/listing.md): One small file that tells the Release Notes Index registry — and any agent — where you publish product updates. Point at your changelog, feed, or GitHub releases. ## Integrations - [Slack](https://releases.sh/docs/integrations/slack.md): Post new releases to a Slack channel whenever something you follow ships. - [Discord](https://releases.sh/docs/integrations/discord.md): Post new releases to a Discord channel whenever something you follow ships. - [GitHub Actions](https://releases.sh/docs/integrations/github-actions.md): Push changelog markdown from a Git repo into Release Notes Index on every merge, without waiting for our next check. - [Any CI](https://releases.sh/docs/integrations/ci.md): Post changelog entries to Release Notes Index from GitLab, Buildkite, or any other CI with the same batch write the GitHub Action uses. ## CLI - [Browsing & Search](https://releases.sh/docs/cli/browsing.md): CLI commands for listing, searching, and inspecting orgs, sources, and releases. ## API - [REST API](https://releases.sh/docs/api/rest.md): HTTP endpoints for browsing orgs, sources, and releases in the index. - [Errors](https://releases.sh/docs/api/errors.md): The standardized error envelope, error types, and common error codes returned by the REST API. - [Webhooks](https://releases.sh/docs/api/webhooks.md): Receive release.created events over HTTPS — org-scoped or filtered by your follows. - [MCP Server](https://releases.sh/docs/api/mcp.md): Use Release Notes Index as an MCP tool server from Claude, Cursor, and other agents. ## About - [Methodology](https://releases.sh/docs/methodology.md): How Release Notes Index finds sources, checks them for new releases, turns pages into release records, and which parts are AI-generated. Also how publishers can opt out, publish directly, or ask for a correction. - [Data](https://releases.sh/docs/data.md): What Release Notes Index holds (organizations, products, sources, releases, collections, overviews, and digests) and every way to read it: web pages, Markdown, JSON, and Atom variants, the REST API, the MCP server, the CLI, webhooks, and llms.txt. - [Privacy & Telemetry](https://releases.sh/docs/privacy.md): What the CLI and local MCP server collect, how to inspect it, and how to opt out. ## Machine-readable endpoints - [OpenAPI 3.1 spec](https://api.releases.sh/v1/openapi.json): Every public REST endpoint's request and response shapes — the source of truth. - [Pricing](https://releases.sh/pricing.md): Free and open source; no paid plans. Anonymous vs. free-account rate limits. - [Agent authentication guide](https://releases.sh/auth.md): OAuth 2.0 / OIDC discovery and token how-to for the few write paths; public reads need none. - [MCP server card](https://releases.sh/.well-known/mcp/server-card.json): Machine-readable description of the hosted MCP server. - [Agent skills index](https://releases.sh/.well-known/agent-skills/index.json): Discovery document for the installable agent skills. - [API catalog](https://releases.sh/.well-known/api-catalog): RFC 9727 catalog advertising the REST API. - [releases.json schema](https://releases.sh/schemas/releases.json): JSON Schema for the owner-published manifest declaring products and release-note locations (see Get Listed above). ## Optional - [llms-full.txt](https://releases.sh/llms-full.txt): All documentation pages concatenated into one file, for single-context ingestion. - [CLI source](https://github.com/buildinternet/releases/tree/main/apps/cli): The open-source CLI; agent skills and the Claude Code plugin live in the same repo under plugins/claude/releases. - [MCP Registry listing](https://registry.modelcontextprotocol.io/v0.1/servers?search=sh.releases/mcp): The hosted server's entry in the official MCP Registry (`sh.releases/mcp`). - [Claude connector directory](https://claude.ai/directory/releases-index): Add the hosted MCP server to Claude on the web, desktop, and mobile.