{"ok":true,"name":"goodearth_update_patron_credential","description":"Add or update a single patron credential field. Merges into existing stored credentials without affecting other fields. Useful for setting an account identifier after OAuth, changing a default brain, etc. Free. Proof of npub ownership is required — this is a write to the patron's sensitive credential vault.","inputSchema":{"type":"object","required":["npub","field","value"],"properties":{"npub":{"type":"string","description":"The patron's Nostr public key (npub1...)."},"field":{"type":"string","description":"The credential field name to set."},"value":{"type":"string","description":"The value to store."}},"additionalProperties":false},"serverUrl":"https://goodearth.tollbooth-dpyc.com/mcp","transport":"http","handshake":"ok","host":"goodearth.tollbooth-dpyc.com","score":40,"grade":"C","auth":"oauth","lastScannedAt":"2026-10-30T13:10:00.853Z","stale":false,"permalink":"https://agentboardai.app/mcp/goodearth.tollbooth-dpyc.com/goodearth_update_patron_credential","page":"https://agentboardai.app/site/goodearth.tollbooth-dpyc.com"}