discovery

The tools visible to the presenting token: an endpoint with an empty allow-list sees every tool, otherwise only the tools it was granted.

The same result as calling the get_context_pack tool: one markdown document carrying this API's metric semantics, grounding rules, mart catalog and full tool reference. Load it into an agent's context once per session. Runs the same pipeline as any tool call, so it consumes a rate-limit unit and is audited.