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.

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This API

curl "https://apis.io/api/v1/apis/apisign-io:apisign-io-health-api"

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Sign Health API
  description: 'Programmatically create, send, and manage contracts for e-signatures. Contracts are created as drafts and charged when sent ($0.25 per send at the default price; test-mode sends are free). Errors return `{ "error": string }`; request validation errors add a `details` array. API key requests are not rate limited.'
  version: 1.0.0
  contact:
    name: API Sign Support
    url: https://apisign.io
servers:
- url: https://apisign.io/api
  description: Production
security:
- ApiKeyAuth: []
tags:
- name: Health
  description: Unauthenticated service checks
paths:
  /health/check:
    get:
      summary: Liveness check
      operationId: healthCheck
      tags:
      - Health
      security: []
      responses:
        '200':
          description: Service is up
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    enum:
                    - ok
  /health/db:
    get:
      summary: Database check
      description: Always returns 200; read `status`.
      operationId: healthDb
      tags:
      - Health
      security: []
      responses:
        '200':
          description: Database status
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    enum:
                    - ok
                    - not ok
                  database:
                    type: string
                    enum:
                    - ok
                    - not ok
                  databaseError:
                    type: string
                    description: Present only when the database query failed
                  timestamp:
                    type: string
                    format: date-time
                  version:
                    type: string
  /openapi:
    get:
      summary: OpenAPI spec
      description: This document.
      operationId: getOpenApiSpec
      tags:
      - Health
      security: []
      responses:
        '200':
          description: OpenAPI 3 document
          content:
            application/json:
              schema:
                type: object
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: API key from the dashboard (Account → MCP & API Keys). Keys start with `ask_`. A key's `read`/`read_write` permission applies only to the MCP server; REST endpoints do not check it.