AgentGuard CB — anti-fabrication chargeback evidence library for Visa Compelling Evidence 3.0 + Stripe Disputes API. Typed schemas, no LLM-generated narrative, Ed25519 hash-chained audit log, stdio MCP server. Part of the AgentGuard™ family from MerchantGuard®.
A typed, deterministic helper library for assembling chargeback-evidence payloads in the schema expected by the current Stripe Disputes API and staging them with `submit:false` for merchant human review prior to submission. Open-sourced by [MerchantGuard](https://merchantguard.ai). Part of the AgentGuard family.