Agent Discovery Spec 0.3.0: Serve and Validate an ADS Manifest in Minutes

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The Agent Discovery Specification (ADS), currently at version 0.3.0, allows developers to expose a machine-readable manifest describing an agent's capabilities via a predictable URL path. A minimal valid manifest requires just five fields, including a spec version, a unique reverse-DNS identifier, a provider name, and a capabilities array. Developers can serve the manifest locally using Python's built-in HTTP server and validate it against the official JSON schema using a short Python script with the jsonschema library. Capability entries must follow strict naming rules: the 'name' field requires a reverse-DNS dot-separated format, while 'invocationName' must not contain dots and is intended for contexts where the full namespaced name cannot be used. The spec is designed to be open and lightweight, with no official CLI validator yet available as of the v0.3.1 release.

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