Awesome Agent APIs

A catalog of API tools an agent can call — 660+ generative-media models available
through muapi out of the box, plus a growing set of third-party
tools (SEO, enrichment, social, scraping, and more) that anyone can add with a
single PR.

This is a reference catalog, not a live proxy. Every entry is documentation —
what a tool does, what it costs, how to call it — not something this repo calls
for you. models/ entries run through your own muapi key; providers/ entries
run through the contributor's own account with that provider.

Agents: read llms.txt — one fetch teaches you how to browse and
use this whole catalog, no install or auth required.

Why this exists

The tools worth calling from an agent are scattered across dozens of vendors, each
with its own docs, auth quirks, and pricing page — and most of the useful ones sit
behind a subscription nobody buys for a single call (Semrush $139/mo, Moz $99/mo,
Crunchbase $99/mo), or behind docs vague enough that you don't know what a call
actually costs or returns until you've already signed up. This catalog puts the
facts that matter — auth shape, real pricing, a captured example response — in one
consistent shape, so an agent (or a person) can scan it and know exactly what a
tool needs before ever opening its docs.

Two kinds of entry

Quickstart

ls providers/ models/            # browse what's catalogued
cat capabilities.yaml            # browse by category instead — media.*, seo.*, people.*, ...
cat providers/<provider>.yaml    # base_url, auth, endpoints, pricing for a third-party tool
cat models/<model>.yaml          # what a muapi-hosted model does, its cost, its docs page

Add a third-party tool

1. Copy providers/_TEMPLATE.yaml to providers/<your-provider>.yaml.
2. Fill it in against the provider's own public docs — see CONTRIBUTING.md for the
   full checklist, including the one non-negotiable step: get a real key and
   confirm at least one endpoint actually works before opening the PR. A schema
   that was never called against the real API is not accepted.
3. Run the validator locally:

   python3 scripts/catalog_validate.py providers/<your-provider>.yaml
   

4. Open a PR. A maintainer reviews the entry and, once confirmed, flips its
   status to verified.

See CONTRIBUTING.md for the full guide, including selection
heuristics (what gets accepted vs. rejected) and common gotchas per auth style.

muapi-hosted models (models/)

These entries are generated directly from muapi's own live catalog — not hand-written,
and not open to arbitrary edits, since they describe what muapi itself already runs.
Each one deliberately omits how muapi actually serves the model (no base_url, no
auth details, no vendor name) — only the model itself, its cost, and a link to its
docs page. Missing a model, or see one that's wrong? Open an issue rather than a PR;
the catalog is refreshed from the source of truth periodically.

Entry statuses

• draft (providers only) — submitted, not yet independently verified by a maintainer.
• verified (providers only) — a maintainer confirmed the entry against a real key
  and a real call; examples/<id>.json holds a real captured response.
• live (models only) — currently available through muapi.

Treat draft entries as a starting point, not a guarantee — verify before relying
on one yourself.

Scope (providers/)

• In scope: any tool with a self-serve API key (no sales call, no partner
  application) — SEO/backlinks, keyword/rank data, people/company enrichment,
  scraping, social/publishing, ads, market data, and similar.
• Out of scope: anything requiring a sales process, an enterprise-only tier
  with no public pricing, or a tool that's deprecated/no longer self-serve.

Related Projects

• MuAPI — Unified API for image, video, and audio generation across hundreds of AI models.
• MuAPI agent skills docs — How MuAPI's own skills/tool-catalog surface works for agents.
• MuAPI access keys — Create a key if you're pairing this catalog with MuAPI's own generative-media API.

License

MIT — see LICENSE.