{"ok":true,"name":"memory.write","description":"Paid ($0.001/call): Persistent key-value memory for agents, scoped to the paying wallet. Your x402 payment IS your authentication: the wallet that pays owns the namespace. No signup, no API keys. Exact-key storage for structured state. For retrieval by MEANING rather than key, use the catalog slugs memory-remember and memory-recall (on MCP, through catalog.call with that slug).","inputSchema":{"type":"object","required":["key"],"properties":{"key":{"type":"string","description":"Key to write (max 256 chars)"},"owner":{"type":"string","description":"Optional 0x namespace to write into (requires a readwrite grant)"},"value":{"description":"Any JSON value (max 64KB serialized)"},"delete":{"type":"boolean","description":"Set true to delete the key instead"},"requestId":{"type":"string","description":"Optional client id for this write; a retry with the same id returns the first answer"},"ttlSeconds":{"type":"number","description":"Optional: auto-expire the key after N seconds"}}},"serverUrl":"https://agent402.tools/mcp","transport":"http","handshake":"ok","host":"agent402.tools","score":85,"grade":"A","auth":"x402","lastScannedAt":"2026-10-30T13:07:39.519Z","stale":false,"permalink":"https://agentboardai.app/mcp/agent402.tools/memory.write","page":"https://agentboardai.app/site/agent402.tools"}