Memory remember

Store a piece of text for later similarity recall — a per-wallet semantic index an agent cannot host in-session. Returns an id. Pair with /api/memory/recall to retrieve by meaning, not exact key.

Input

Field	Type	Description
text *	string	Text to remember (max 8KB)
meta	any	Optional JSON metadata stored alongside
owner	string	Optional 0x namespace (requires a readwrite grant)

Example output

{
  "id": "abc123",
  "owner": "0x…",
  "stored": true
}

Try it — see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/memory/remember \
  -H "Content-Type: application/json" \
  -d '{"text":"The deploy failed because the Railway build ran out of memory.","meta":{"topic":"ops"}}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/memory/remember", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "text": "The deploy failed because the Railway build ran out of memory.",
    "meta": {
      "topic": "ops"
    }
  }),
});

Wallet-only. This tool reaches the network/browser/storage, so it is paid in USDC via x402 (no proof-of-work tier).

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