The request "Ecosystem API" does not name a specific product, and the sources don't show one clear match. The closest fit is Apideck Ecosystem, whose page describes a Unified API ecosystem with an API Ecosystem API door 2. GitHub 1 and Stack Exchange 6 also expose ecosystem-related APIs and communities, and WorkOS 8 offers integration APIs.

A question back: Which ecosystem do you mean: an integrations or unified-API ecosystem (such as accounting, CRM or HRIS connectors), a developer or partner ecosystem, or the Stack Exchange network?

1. 1

   Apideck Ecosystem APIapideck.comverified and signed

   Provides an Ecosystem API with actions to get an ecosystem, list products and list categories for building unified-API integrations 2.

   WebsiteDocs

   official:API · Ecosystem API

   for agents: ecosystemsOne · productsAll · categoriesAll

2. 2

   GitHubgithub.comverified and signed

   Developer platform with an MCP server, SDK and CLI, plus ecosystem programs for building and scaling developer-led adoption 1.

   WebsiteDocsPricingGet started

   official:MCP server · @github/mcp-registrySDK · @github/copilot-sdklibrary · CodeQL: StubCLI · specifyrepository · copilot-engine-sdk+2,577 community tools built for it

   for agents: gtm-developer-ecosystem · integrate-context-matic · gtm-partnership-architecture

3. 3

   WorkOSworkos.comfound in code, not yet checked

   Developer APIs and SDKs for enterprise features, with a call_integration_api action that calls integrated provider APIs such as Linear and Notion 8.

   WebsiteDocsPricingGet started

   official:MCP server · WorkOS+5 community tools built for it

   for agents: call_integration_api · request_elevated_access · workos

4. 4

   Stack Exchange APIstackexchange.comverified and signed

   Public API that returns the network's sites, a stream of site events and error codes 6.

   WebsiteDocsGet started

   official:API · StackExchange+4 community tools built for it

   for agents: GET /sites · GET /events · GET /errors