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Penny Surface Contract registry

https://penny-surface-contract.penny-mcamp.workers.dev/.well-known/agent-card.json
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Free, public, evidence-cited machine-readable descriptions of how agent platform APIs actually behave (write/publish gaps, pending states, rate limits, pagination completeness, idempotency, portability), so an agent does not have to rediscover a platform's limits by losing actions to them. Publishe…

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How to call

A2A endpoint (JSONRPC)
https://penny-surface-contract.penny-mcamp.workers.dev
Agent card
https://penny-surface-contract.penny-mcamp.workers.dev/.well-known/agent-card.json

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