docs(build-an-oracle): document the can option on mintInvocation - #47
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`rtCtx.ucan.mintInvocation` now takes `opts.can` — the ability the invocation claims, defaulting to `'*'`. The docs showed only the default, which is an over-claim against every real delegation: a claim resolves against a grant only when the granted ability is `'*'`, equals the claim, or is a `prefix/*` covering it, so a `'*'` claim is satisfiable ONLY by a `'*'` grant. Oracles delegated `memory/*` or `sandbox/*` must claim that ability explicitly. Adds a "Claim only what you were granted" section covering the coverage rule, the failure mode, and the service-first rollout order — services match the invocation's `can` by strict equality, so claiming a narrow ability before the service registers it 401s every call. Refs ORA-364
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Documents the new
opts.canonrtCtx.ucan.mintInvocation, added in ixoworld/qiforge#235. Refs ORA-364.Why
The docs showed only the default (
can: '*'), which is an over-claim against every real delegation. A claim resolves against a grant only when the granted ability is'*', equals the claim, or is aprefix/*covering it — so a'*'claim is satisfiable only by a'*'grant. An oracle delegatedmemory/*claiming'*'gets a 401, which is the production bug this change came out of.Changes
reference/runtime-context.mdxmintInvocationsignature updated withcan?: stringopts.canandopts.skipCachedevelop/identity-and-auth.mdx'*'→ oracle claims narrow → service tightens), since reversing the first two steps 401s every callBoth pages stay code-first — rule, example, failure mode, no protocol theory.