One (successor to IntegrationOS / Pica)

One is the current successor brand to IntegrationOS and Pica. It provides agent infrastructure with a unified CLI for 250+ platforms and 50,000+ tools, managed OAuth (AuthKit), multi-step Flows, memory, and the Bridge feature for converting API documentation into MCP servers. The legacy IntegrationOS and docs.integrationos.com domains now redirect into the One ecosystem.

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.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/successor"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑
aid: integration-os:successor
name: One (successor to IntegrationOS / Pica)
description: One is the current successor brand to IntegrationOS and Pica. It provides agent infrastructure
  with a unified CLI for 250+ platforms and 50,000+ tools, managed OAuth (AuthKit), multi-step Flows,
  memory, and the Bridge feature for converting API documentation into MCP servers. The legacy IntegrationOS
  and docs.integrationos.com domains now redirect into the One ecosystem.
humanURL: https://withone.ai
baseURL: https://app.withone.ai
tags:
- Agent Infrastructure
- AI Agents
- MCP
- Unified-API
tags_raw:
- Agent Infrastructure
- AI Agents
- MCP
- Unified API
properties:
- type: Portal
  url: https://withone.ai
- type: Documentation
  url: https://www.withone.ai/docs/welcome
- type: Blog
  url: https://www.withone.ai/blog
- type: KnowledgeBase
  url: https://www.withone.ai/knowledge
- type: Signup
  url: https://app.withone.ai
- type: Login
  url: https://app.withone.ai
- type: GitHubOrg
  url: https://github.com/withoneai
- type: GitHubRepo
  url: https://github.com/withoneai/knowledge
- type: Rules
  url: rules/integration-os-rules.yml