# AsyncAPI

> AsyncAPI is a Linux Foundation project that publishes the open specification for describing event-driven and asynchronous APIs, plus the toolchain around it: a parser, generator, converter, bundler, diff engine, models generator, a CLI and a browser Studio. It also operates one callable HTTP API — the AsyncAPI Server API at https://api.asyncapi.com/v1 — which exposes the toolchain over HTTP, free and without an API key.

Generated by API Evangelist on 2026-09-06 from https://github.com/api-evangelist/asyncapi.
The provider does not publish an llms.txt of its own (https://www.asyncapi.com/llms.txt returned 404 on 2026-09-06).

## What is callable

The AsyncAPI Server API is the only HTTP API the Initiative operates. It is stateless: every operation takes an AsyncAPI (or OpenAPI) document in the request body and returns a derived document, diagnostics or metadata. Nothing is stored. No authentication, no signup, no keys, no published rate limits.

- Base URL: https://api.asyncapi.com/v1
- OpenAPI 3.1.0: https://api.asyncapi.com/v1/docs/openapi.yaml
- Interactive reference: https://api.asyncapi.com/v1/docs
- Self-host the same service: `docker run -it -p 80:80 asyncapi/server-api` or `asyncapi start api`

Operations:
- POST /validate (validate) — validate a document; returns status, diagnostics and a score
- POST /parse (parse) — parse and resolve a document
- POST /convert (convert) — AsyncAPI 2.x to 3.x, or OpenAPI 3.0 to AsyncAPI
- POST /generate (generate) — run a generator template over a document
- POST /bundle (bundle) — merge documents and their references into one
- POST /diff (diff) — difference two documents
- GET /help (help) — list the commands the server exposes
- GET /version (getVersion) — CLI version, runtime and API health

## Specification

- AsyncAPI Specification: https://www.asyncapi.com/docs/reference/specification/v3.1.0
- Current version: 3.1.0, released 2026-01-31 (3.0.0 released 2023-12-05)
- Spec repository: https://github.com/asyncapi/spec
- JSON Schemas for every version: https://github.com/asyncapi/spec-json-schemas
- Licence: Apache-2.0

## Docs

- Documentation: https://www.asyncapi.com/docs
- Getting started: https://www.asyncapi.com/docs/tutorials/getting-started
- Concepts: https://www.asyncapi.com/docs/concepts
- Reference: https://www.asyncapi.com/docs/reference
- Tools: https://www.asyncapi.com/docs/tools
- CLI: https://www.asyncapi.com/docs/tools/cli
- CLI installation: https://www.asyncapi.com/docs/tools/cli/installation
- Generator: https://www.asyncapi.com/docs/tools/generator
- Studio (hosted, no signup): https://studio.asyncapi.com
- Case studies: https://www.asyncapi.com/casestudies
- Blog: https://www.asyncapi.com/blog

## Tooling (first-party, npm @asyncapi scope)

- @asyncapi/cli 6.0.2 — all-in-one CLI; `npm install -g @asyncapi/cli` or `brew install asyncapi`
- @asyncapi/parser 3.6.3 — JavaScript parser
- @asyncapi/generator 3.4.0 — template-driven code and docs generation
- @asyncapi/modelina 5.10.1 — typed model generation
- @asyncapi/specs 6.11.1 — the AsyncAPI JSON Schemas
- @asyncapi/converter 2.0.2, @asyncapi/bundler 1.0.2, @asyncapi/diff 0.5.0, @asyncapi/optimizer 1.0.4
- @asyncapi/react-component 3.1.8 and @asyncapi/web-component 3.1.8 — document renderers
- @asyncapi/glee 0.37.9 — spec-first event application framework
- Go: github.com/asyncapi/parser-go, github.com/asyncapi/event-gateway

## Community and governance

- GitHub organization: https://github.com/asyncapi
- Community: https://www.asyncapi.com/community
- Technical Steering Committee: https://www.asyncapi.com/community/tsc
- Security policy: https://github.com/asyncapi/.github/blob/master/SECURITY.md (security@asyncapi.com)
- Legal: hosted by LF Projects, LLC — https://lfprojects.org/policies/

## What is NOT published

Recorded so an agent stops looking: no llms.txt, no /.well-known documents on any host, no A2A agent card, no MCP server, no status page, no rate-limit documentation, no pricing or plans, and no deprecation policy for the hosted API.