generated: '2026-09-11'
method: searched
source: >-
  Registry metadata endpoints (registry.npmjs.org, pypi.org, rubygems.org, crates.io),
  api.github.com for the api-search organization, and https://apis.io/llms.txt
summary: >-
  APIs.io publishes NO first-party client SDK in any public package registry. That is the finding,
  and it is a real one rather than a gap in this probe: the service's own integration story is
  "call the REST contract, or attach the MCP server", and the only thing it actually distributes as
  an installable unit is a Claude Code plugin served from a GitHub repository, which has no
  registry and therefore no registry metadata endpoint to query. Every registry below was asked by
  name and answered.
packages:
- language: n/a
  registry: github
  distribution: claude-code-plugin
  name: apis-io
  marketplace: api-search/agent-skills
  url: https://github.com/api-search/agent-skills
  manifest: https://raw.githubusercontent.com/api-search/agent-skills/refs/heads/main/.claude-plugin/marketplace.json
  install: /plugin marketplace add api-search/agent-skills
  install_step_2: /plugin install apis-io@apis-io
  version: 1.0.0
  published: null
  official: true
  contents: 20 agent skills plus the APIs.io MCP server, in one install
  note: >-
    version 1.0.0 read from the plugin entry in the marketplace manifest (HTTP 200, fetched
    2026-09-11). published is null because a Claude Code plugin marketplace is a git repository,
    not a registry — there is no metadata endpoint that carries a publish date, and the manifest
    itself does not carry one. Checked, nothing to record; not unchecked.
  defect: >-
    https://apis.io/llms.txt tells an agent to run `/plugin marketplace add api-search/network`.
    That repository returns HTTP 404 to an anonymous caller — the marketplace actually lives at
    api-search/agent-skills. An agent following our own published instructions cannot install our
    own plugin. Verified 2026-09-11 against api.github.com/repos/api-search/network (404) and
    api.github.com/repos/api-search/agent-skills (200).
registries_probed:
- registry: npm
  endpoint: https://registry.npmjs.org
  queries:
  - {name: apis-io, status: 404}
  - {name: apisio, status: 404}
  - {name: apis.io, status: 404}
  - {name: apis-io-mcp, status: 404}
  - {name: '@apis-io/sdk', status: 404}
  - {name: '@apisio/sdk', status: 404}
  - {name: '@api-evangelist/apis-io', status: 404}
  - {search: 'apis.io', status: 200, results: 0}
  - {search: apisio, status: 200, results: 0}
  found: 0
- registry: pypi
  endpoint: https://pypi.org/pypi/<name>/json
  queries:
  - {name: apis-io, status: 404}
  - {name: apisio, status: 404}
  - {name: apis_io, status: 404}
  found: 0
- registry: rubygems
  endpoint: https://rubygems.org/api/v1/gems/<name>.json
  queries:
  - {name: apis-io, status: 404}
  found: 0
- registry: crates.io
  endpoint: https://crates.io/api/v1/crates/<name>
  queries:
  - {name: apis-io, status: 403}
  found: 0
  note: >-
    403 is crates.io refusing the user agent, not a package. Recorded as inconclusive rather than
    as an absence — the only registry of the set that did not give a clean answer.
- registry: maven-central
  probed: false
  reason: No JVM surface is claimed anywhere in the docs, the llms.txt or the GitHub organization.
- registry: nuget
  probed: false
  reason: No .NET surface is claimed anywhere in the docs, the llms.txt or the GitHub organization.
- registry: pkg.go.dev
  probed: false
  reason: No Go surface is claimed anywhere in the docs, the llms.txt or the GitHub organization.
- registry: mcp-registry
  endpoint: https://registry.modelcontextprotocol.io/v0/servers?search=io.apis
  status: 200
  found: 1
  entry: io.apis/apis-io
  note: >-
    Not a client library — the MCP server's registry listing. Recorded here because it is the one
    package-registry-shaped record APIs.io does maintain. Catalogued properly in mcp/apis-io-mcp.yml.
github_organization:
  org: api-search
  url: https://github.com/api-search
  public_repos: 9
  repos:
  - {name: .github, language: null}
  - {name: spotlight-rules, language: JavaScript}
  - {name: security, language: HTML}
  - {name: areas, language: HTML}
  - {name: scopes, language: HTML}
  - {name: agentic-access, language: HTML}
  - {name: inbox, language: null}
  - {name: estates, language: HTML}
  - {name: agent-skills, language: null}
  note: >-
    Nine public repositories, none of which is a client library — eight are published site or data
    surfaces and one is the plugin marketplace. The repositories named in apis.yml as
    GitHubRepository pointers (apis-io-search, apis-io-engine, apis-io-authentication,
    apis-io-ratings, apisio/apis.io) are not among them.
sdk_count: 0
official_sdk_count: 0
x-evidence:
  fetched: '2026-09-11'
  method: unauthenticated HTTP to each registry's documented metadata endpoint