Work with this as data
Every API here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/glyphapi-dev:glyphapi-dev-old-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
OpenAPI Specification
openapi: 3.2.0
info:
title: Glyph Old API
description: 'A language for agents: encode content into the cheapest substrate the reading model can parse, with honest per-reader token math. Fillin is the retrieval product — a time-series index of the dev internet that closes the gap between an LLM''s training cutoff and now.'
version: 0.1.0
tags:
- name: Old
paths:
/old:
get:
summary: Legacy Funnels Redirect
operationId: _legacy_funnels_redirect_old_get
responses:
'200':
description: Successful Response
content:
application/json:
schema: {}
tags:
- Old
components:
securitySchemes:
HTTPBearer:
type: http
scheme: bearer