Agentic Resource Discovery (ARD)

Canonical home of the Agentic Resource Discovery specification — a federated, domain-anchored standard for cataloging, searching, and discovering agentic resources (MCP servers, A2A agent cards, Skills, APIs, and other callable services) across networks of discovery services.

📖 Read the rendered spec at agenticresourcediscovery.org/spec — the docs site renders spec/ard.md directly from this repo, so this is the single source of truth.

Layout

• spec/ard.md — the specification (v0.91)
• spec/ard-v0.9.md — the previous version, kept reachable
• spec/schemas/ — CDDL, JSON Schema, and OpenAPI definitions
• adr/ — architecture decision records
• conformance/ — conformance test tooling

Contributing

We'd love your involvement — contributions and feedback are very welcome. To keep the standard coherent, we handle two kinds of changes differently:

• Normative spec changes (anything that alters the standard itself — spec/ard.md and the schemas in spec/schemas/): please open an issue to discuss the proposal first. Once there's agreement, a maintainer lands the change. This keeps the spec consistent and gives every change a clear rationale on record.
• Everything else (examples, conformance tooling, reference implementations, documentation, typo and link fixes): pull requests are welcome — just open one.

Not sure which bucket your idea falls in? Open an issue and we'll figure it out together.

Status

v0.91. The specification is open and evolving; feedback and proposals are welcome via issues and, for non-normative changes, pull requests.

License

See LICENSE.