The registry

92 approved interfaces · 49 operational · 0 unreachable · 43 unchecked. Same data over JSON, llms.txt and MCP.

• Airtabletemplated url

  Structured records over REST, useful as an agent-writable lightweight database.

  api · https://api.airtable.com/v0/{baseId}/{table} · auth: Bearer personal access token

• Algoliatemplated url

  Hosted keyword and faceted search with sub-50ms responses.

  api · https://{appid}-dsn.algolia.net/1/indexes/{index}/query · auth: App ID + API key headers

• Anthropic Messagesoperational · 77ms

  Claude models with tool use, long context and streaming responses.

  api · https://api.anthropic.com/v1/messages · auth: x-api-key header

• AWS CLIlocal cli

  Full programmatic control of every AWS service from one binary.

  cli · aws · auth: IAM credentials / SSO

• Brave Searchoperational · 859ms

  Independent web index queryable as JSON — a common grounding source for agents.

  api · https://api.search.brave.com/res/v1/web/search · auth: X-Subscription-Token header

• Browserlessoperational · 438ms

  Headless Chrome as an HTTP service: screenshots, PDFs and full browser automation.

  api · https://production-sfo.browserless.io/screenshot · auth: token query parameter

• Cloudflare APIoperational · 72ms

  DNS, Workers, caching and zone configuration over REST.

  api · https://api.cloudflare.com/client/v4 · auth: Bearer API token

• Cloudflare Docs MCPoperational · 92ms

  Hosted MCP server answering questions over the full Cloudflare documentation.

  mcp · https://docs.mcp.cloudflare.com/sse · auth: None (public)

• Cloudflare MCPoperational · 53ms

  Workers, DNS, analytics and logs exposed as remote MCP tools.

  mcp · https://observability.mcp.cloudflare.com/mcp · auth: OAuth 2.1

• Cloudflare MCPoperational · 33ms

  Remote MCP servers for Workers, observability, DNS analytics and docs.

  mcp · https://docs.mcp.cloudflare.com/mcp · auth: OAuth

• Cloudflare R2 (S3 API)templated url

  S3-compatible object storage with zero egress fees.

  api · https://{account}.r2.cloudflarestorage.com · auth: AWS SigV4

• CoinGeckooperational · 169ms

  Crypto prices, market caps and historical charts, generous free tier.

  api · https://api.coingecko.com/api/v3/simple/price · auth: None (demo) / x-cg-api-key

• Context7 MCPoperational · 513ms

  Up-to-date library documentation injected into the model context on demand.

  mcp · https://mcp.context7.com/mcp · auth: Optional API key

• Context7 MCPoperational · 503ms

  Up-to-date library documentation injected straight into an agent's context.

  mcp · https://mcp.context7.com/mcp · auth: None (optional API key)

• curllocal cli

  The universal fallback when no SDK or MCP server exists yet.

  cli · curl -sS -H 'Authorization: ...' · auth: per target

• Deepgramoperational · 732ms

  Speech-to-text transcription with diarization, streaming and 30+ languages.

  api · https://api.deepgram.com/v1/listen · auth: Token header

• DeepLawaiting probe

  High-quality machine translation across 30+ languages with formality control.

  api · https://api-free.deepl.com/v2/translate · auth: DeepL-Auth-Key header

• DeepWiki MCPoperational · 920ms

  Ask questions about any public GitHub repository through indexed wikis.

  mcp · https://mcp.deepwiki.com/mcp · auth: None

• DeepWiki MCPoperational · 925ms

  Ask questions about any public GitHub repository through generated documentation.

  mcp · https://mcp.deepwiki.com/mcp · auth: None (public)

• Discord REST APIoperational · 165ms

  Bot-driven access to guilds, channels and messages.

  api · https://discord.com/api/v10 · auth: Bot token header

• Docker CLIlocal cli

  Build, run and ship containers — the standard sandbox for agent-executed code.

  cli · docker · auth: docker login

• DuckDB CLIlocal cli

  In-process analytical SQL over CSV, Parquet and JSON without a server.

  cli · duckdb · auth: None

• ElevenLabstemplated url

  Text-to-speech with cloned and multilingual voices, streaming supported.

  api · https://api.elevenlabs.io/v1/text-to-speech/{voice_id} · auth: xi-api-key header

• Exaoperational · 203ms

  Neural search over the web with semantic queries and full-text retrieval.

  api · https://api.exa.ai/search · auth: x-api-key header

• exchangerate.hostoperational · 300ms

  Foreign exchange rates and currency conversion, no signup for basic use.

  api · https://api.exchangerate.host/latest · auth: None (access key for higher tiers)

• Fetch MCPlocal (stdio)

  Reference server that fetches a URL and converts it to markdown for the model.

  mcp · uvx mcp-server-fetch · auth: None

• Fetch MCPlocal (stdio)

  Reference server that fetches a URL and converts it to markdown for the model.

  mcp · npx -y @modelcontextprotocol/server-fetch · auth: None

• ffmpeglocal cli

  Media transcoding an agent can drive deterministically from a prompt.

  cli · ffmpeg -i in.mp4 out.webm · auth: none

• Filesystem MCPlocal (stdio)

  Reference MCP server exposing sandboxed read/write access to local directories.

  mcp · npx -y @modelcontextprotocol/server-filesystem /path · auth: None (path allow-list)

• Filesystem MCPlocal (stdio)

  Reference server giving agents scoped read/write access to local directories.

  mcp · npx -y @modelcontextprotocol/server-filesystem <allowed-dir> · auth: None (local stdio, path-scoped)

• Firecrawloperational · 511ms

  Turn any URL or whole site into clean markdown ready for a model context.

  api · https://api.firecrawl.dev/v1/scrape · auth: Bearer API key

• Frankfurter FXoperational · 79ms

  Reference exchange rates from the ECB, free and keyless.

  api · https://api.frankfurter.app/latest · auth: None

• ghlocal cli

  GitHub from the shell. gh pr create, gh issue list --json for parsing.

  cli · gh <command> --json · auth: gh auth login

• gitlocal cli

  Version control operations agents need to inspect and change codebases.

  cli · git <command> [args] · auth: SSH key or token

• GitHub MCPoperational · 86ms

  Repos, issues, pull requests and code search as first-class tools.

  mcp · https://api.githubcopilot.com/mcp · auth: OAuth 2.1

• GitHub MCP Serveroperational · 259ms

  Official MCP server exposing repos, issues, PRs and code search as tools.

  mcp · https://api.githubcopilot.com/mcp/ · auth: OAuth or PAT bearer

• GitHub RESToperational · 53ms

  Repositories, issues, pull requests, actions and releases as HTTP resources.

  api · https://api.github.com · auth: Bearer personal access token

• Google Calendar APItemplated url

  Create, list and update calendar events on behalf of a user.

  api · https://www.googleapis.com/calendar/v3/calendars/{calendarId}/events · auth: OAuth 2.0 bearer token

• Google Placesoperational · 53ms

  Place search, details and geocoding for location-aware agents.

  api · https://places.googleapis.com/v1/places:searchText · auth: X-Goog-Api-Key header

• Hacker News Firebase APIoperational · 463ms

  Public, auth-free feed of stories, comments and users.

  api · https://hacker-news.firebaseio.com/v0/topstories.json · auth: None

• Hugging Face Inferenceoperational · 132ms

  Serverless inference across thousands of hosted community models.

  api · https://router.huggingface.co/hf-inference/models · auth: Bearer token

• Hugging Face MCPoperational · 130ms

  Hosted MCP server over models, datasets, Spaces and inference.

  mcp · https://huggingface.co/mcp · auth: Bearer HF token

• ImageMagicklocal cli

  Resize, convert, composite and inspect images from the command line.

  cli · magick · auth: None

• jqlocal cli

  Stream-oriented JSON processor — the glue between two API calls.

  cli · jq · auth: None

• Linearoperational · 246ms

  GraphQL issue tracker. Strong schema, great for planning agents.

  api · https://api.linear.app/graphql · auth: API key header

• Linear GraphQL APIoperational · 238ms

  Create, query and update issues, projects and cycles from a single GraphQL endpoint.

  api · https://api.linear.app/graphql · auth: API key header

• Linear MCPoperational · 60ms

  Official hosted MCP server for issues, projects and cycles.

  mcp · https://mcp.linear.app/mcp · auth: OAuth 2.1

• Linear MCPoperational · 43ms

  Manage issues, projects and cycles from an agent session.

  mcp · https://mcp.linear.app/mcp · auth: OAuth

• Logo API (Clearbit)templated url

  Company logo by domain, keyless image endpoint.

  api · https://logo.clearbit.com/{domain} · auth: None

• Mapbox Geocodingoperational · 52ms

  Forward and reverse geocoding: addresses to coordinates and back.

  api · https://api.mapbox.com/geocoding/v5/mapbox.places · auth: access_token query parameter

• Memory MCPlocal (stdio)

  Knowledge-graph persistent memory across sessions, reference implementation.

  mcp · npx -y @modelcontextprotocol/server-memory · auth: None

• Memory MCPlocal (stdio)

  Knowledge-graph persistent memory so agents keep state across sessions.

  mcp · npx -y @modelcontextprotocol/server-memory · auth: None (local stdio)

• Notionoperational · 199ms

  Pages, databases and blocks as structured JSON. Rate limit ~3 req/s.

  api · https://api.notion.com/v1 · auth: Bearer integration token

• Notion MCPoperational · 63ms

  Official Notion MCP server for searching, reading and writing workspace content.

  mcp · https://mcp.notion.com/mcp · auth: OAuth

• Notion MCPoperational · 72ms

  Official hosted MCP server for reading and editing a Notion workspace.

  mcp · https://mcp.notion.com/mcp · auth: OAuth 2.1

• OpenAI Platformoperational · 150ms

  Chat completions, embeddings, images, audio and structured outputs.

  api · https://api.openai.com/v1 · auth: Bearer API key

• OpenAlexoperational · 1276ms

  Open catalog of scholarly works, authors and institutions.

  api · https://api.openalex.org/works · auth: None (polite pool via mailto)

• OpenSSLlocal cli

  Hashing, signing, key generation and TLS inspection from the shell.

  cli · openssl · auth: None

• OpenWeatheroperational · 63ms

  Current conditions, forecasts and historical weather by coordinates or city.

  api · https://api.openweathermap.org/data/2.5/weather · auth: appid query parameter

• OpenWeatherMapawaiting probe

  Current conditions and forecasts by coordinates or city name.

  api · https://api.openweathermap.org/data/2.5/weather · auth: appid query parameter

• Pandoclocal cli

  Universal document converter between markdown, docx, HTML, PDF and more.

  cli · pandoc · auth: None

• PDF.coawaiting probe

  Parse, split, merge and extract data from PDFs over HTTP.

  api · https://api.pdf.co/v1/pdf/convert/to/text · auth: x-api-key header

• Pineconetemplated url

  Managed vector database for embeddings, retrieval and RAG pipelines.

  api · https://{index}-{project}.svc.{env}.pinecone.io/query · auth: Api-Key header

• Playwright MCPlocal (stdio)

  Drive a real browser from an agent: navigate, click, type, snapshot.

  mcp · npx -y @playwright/mcp@latest · auth: None (local stdio)

• Playwright MCPlocal (stdio)

  Microsoft's official MCP server driving a real browser through accessibility snapshots.

  mcp · npx @playwright/mcp@latest · auth: None (local stdio)

• Postgres MCPlocal (stdio)

  Read-only SQL access to a Postgres database with schema introspection.

  mcp · npx -y @modelcontextprotocol/server-postgres <connection-string> · auth: Connection string

• psqllocal cli

  Direct SQL access. psql -c "..." --csv gives agent-parseable output.

  cli · psql $DATABASE_URL -c · auth: connection string

• Replicateoperational · 285ms

  Run thousands of open-source models (image, video, audio) behind one prediction API.

  api · https://api.replicate.com/v1/predictions · auth: Bearer API token

• Resendoperational · 302ms

  Transactional email with a single POST. Ideal for agent side effects.

  api · https://api.resend.com/emails · auth: Bearer API key

• ripgreplocal cli

  Extremely fast recursive code and text search, respects .gitignore.

  cli · rg · auth: None

• SEC EDGARtemplated url

  Public filings and company financial facts, no key required.

  api · https://data.sec.gov/api/xbrl/companyfacts/CIK{cik}.json · auth: None (User-Agent header required)

• Sentry APItemplated url

  Read issues, events and releases from an error-monitoring project.

  api · https://sentry.io/api/0/projects/{org}/{project}/issues/ · auth: Bearer auth token

• Sentry MCPoperational · 50ms

  Error groups, stack traces and release health for debugging agents.

  mcp · https://mcp.sentry.dev/mcp · auth: OAuth 2.1

• Sentry MCPoperational · 53ms

  Hosted MCP server for triaging production errors and running Seer analyses.

  mcp · https://mcp.sentry.dev/mcp · auth: OAuth

• Sequential Thinking MCPlocal (stdio)

  Structured step-by-step reasoning scaffold exposed as an MCP tool.

  mcp · npx -y @modelcontextprotocol/server-sequential-thinking · auth: None

• Sequential Thinking MCPlocal (stdio)

  Structured step-by-step reasoning scaffold exposed as a tool.

  mcp · npx -y @modelcontextprotocol/server-sequential-thinking · auth: None (local stdio)

• Slack Web APIoperational · 158ms

  Post messages, read channels and manage a workspace programmatically.

  api · https://slack.com/api/chat.postMessage · auth: Bearer bot token

• sqlite3local cli

  Zero-config local SQL database, ideal for agent scratch state.

  cli · sqlite3 <file.db> '<sql>' · auth: None (file permissions)

• Stripeoperational · 89ms

  Payments, subscriptions, invoices. Idempotent writes, cursor pagination.

  api · https://api.stripe.com/v1 · auth: Bearer secret key

• Stripe MCPoperational · 80ms

  Official MCP server for customers, payments, subscriptions and Stripe docs.

  mcp · https://mcp.stripe.com · auth: OAuth 2.1 / restricted key

• Supabase CLIlocal cli

  Migrations, local stack, type generation and deployments for a Postgres backend.

  cli · supabase · auth: Access token

• Supabase MCPlocal (stdio)

  Query, migrate and inspect a Supabase project through MCP tools.

  mcp · npx -y @supabase/mcp-server-supabase@latest · auth: Personal access token

• Supabase MCPoperational · 65ms

  Query and mutate Postgres, inspect schema, manage projects over MCP.

  mcp · https://mcp.supabase.com/mcp · auth: OAuth 2.1 / PAT

• Supabase PostgRESToperational · 82ms

  Any Postgres schema exposed as a REST interface with row-level security.

  api · https://api.supabase.com/v1 · auth: apikey header + optional user JWT

• Tavily Searchoperational · 252ms

  Web search built for LLM consumption: ranked results with extracted page content.

  api · https://api.tavily.com/search · auth: Bearer API key

• Tesseract OCRlocal cli

  Extract text from images and scans locally, no network round trip.

  cli · tesseract <image> <output-base> [options] · auth: None

• Twilio Messagingtemplated url

  Send SMS, MMS and WhatsApp messages worldwide over a REST endpoint.

  api · https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Messages.json · auth: HTTP Basic (SID + auth token)

• Unstructuredoperational · 719ms

  Parse PDFs, DOCX and slides into clean, chunked elements for retrieval.

  api · https://api.unstructuredapp.io/general/v0/general · auth: unstructured-api-key header

• Vercel REST APIoperational · 893ms

  Trigger deployments, read logs and manage projects and domains.

  api · https://api.vercel.com/v13/deployments · auth: Bearer token

• Wikipedia RESToperational · 125ms

  Article summaries and full content — a reliable no-auth grounding source.

  api · https://en.wikipedia.org/api/rest_v1/page/summary · auth: None

• Wikipedia REST APItemplated url

  Article summaries and full content, keyless and highly reliable.

  api · https://en.wikipedia.org/api/rest_v1/page/summary/{title} · auth: None

• yt-dlplocal cli

  Download audio, video and subtitles from thousands of sites.

  cli · yt-dlp · auth: Optional cookies