Twenty Agent Skills that teach an agent how to work the apis.io API catalog — find an API, read its spec, onboard a provider, check whether it is agent-ready, score your own API, and research a whole market. Bundled as a Claude Code plugin alongside the apis.io MCP server.
Canonical home: https://apis.io/skills/
/plugin marketplace add api-search/agent-skills
/plugin install apis-io@apis-io
The plugin installs all twenty skills and connects the apis.io MCP server at
https://apis.io/mcp.
Every skill is a plain SKILL.md with YAML frontmatter — portable to Codex, Cursor, Copilot,
Gemini CLI, or any agent that reads the format. Fetch one directly:
curl -s https://apis.io/skills/resolve-provider/SKILL.mdDiscovery manifests (both generated, both identical in content):
- https://apis.io/skills/index.json
- https://apis.io/.well-known/agent-skills/index.json — agent-skills-discovery RFC v0.2.0,
with a
sha256digest per skill
| Skill | Tier | What it does |
|---|---|---|
discover-apis-io |
free | The conventions every other skill assumes. Start here. |
resolve-provider |
free | Domain, URL, or company name to a catalog slug — plus a free quality band. |
search-apis |
free | Keyword search across APIs, providers, and tags. |
find-api |
free | Search, inspect, and recommend one API. |
fetch-api-spec |
free | Fetch and parse an OpenAPI/AsyncAPI/GraphQL/Postman description. |
find-artifact |
mixed | Every other artifact type: Arazzo, rules, plans, FinOps, rate limits, schemas. |
integrate-provider |
free | Auth, base URL, and a runnable first call. |
agent-readiness-scan |
mixed | Can an autonomous agent safely drive this API? |
discover-mcp-servers |
free | Which providers ship an MCP server, and how to install it. |
discover-agent-skills |
free | Agent Skills published by providers across the network. |
verify-provenance |
free | First-party vs derived — what the catalog actually witnessed. |
score-my-api |
mixed | Your Kin Score, the rubric, and a ranked punch list. |
benchmark-against-peers |
mixed | Facet-by-facet against your closest competitors. |
shortlist-vendors |
Pro | A scored shortlist for one capability. |
assemble-api-stack |
Pro | A provider per capability, exportable as APIs.json. |
audit-api-estate |
Pro | Inventory, score, and gap a vendor portfolio. |
watch-providers |
mixed | Saved searches and net_new — ongoing monitoring. |
track-api-changes |
Pro | A one-off change and movers digest. |
explore-cohort |
mixed | Any market slice as a scored cohort with its members. |
company-readiness |
mixed | The demand side — what companies are investing in. |
"mixed" means the skill does real work on free endpoints and documents the Pro upgrade for depth. Every skill handles the HTTP 402 upgrade response and falls back rather than guessing.
The skills are authored upstream in the API Evangelist network repo and published to apis.io. This repo is the public distribution surface — it exists so Claude Code, the Anthropic community marketplace, and third-party skill directories can reach the plugin over public GitHub.
Do not send pull requests here; changes are overwritten on the next sync. File issues and
corrections against the catalog at https://apis.io or email info@apievangelist.com.
- apis.io — the API catalog these skills read
- skills.apis.io — Agent Skills published by providers across the network
- API Evangelist — the publisher
CC BY-NC-SA 4.0. Attribution required, non-commercial, share-alike.