Memories Search
by Mem0 Cloud in Search & web
Search your stored memories by meaning, like mem0's search: embeds the query and returns the closest memories with a relevance score from 0 to 1. Only memories stored under the same memory_key (your secret string; required) are searched. filters must name at least one of user_id, agent_id, app_id, run_id. Returns {results:[{id, memory, score, metadata, ...}]}.
https://mem0-cloud.saastemly.com/v3/memories/search- Price
- $0.004
- per call in USDC
- Uptime
- 100%
- last 30 days
- Response time
- 338 ms
- 634 ms slowest 5%
- Last check
- Passed
- 3 h ago, next any minute now
Reliability
Status and outage history · Atom feed · Watch with other listings
How to call it
POST https://mem0-cloud.saastemly.com/v3/memories/search
Each call costs $0.004 in USDC on Base, paid with the request over x402.
Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.
Example request
From the listing.
POST https://mem0-cloud.saastemly.com/v3/memories/search
content-type: application/json
{
"filters": {
"user_id": "alice"
},
"memory_key": "mk_7f3a9c1e5b2d48a6b0c4e9d1",
"query": "where does the user live?",
"top_k": 5
}Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
filters | object | Yes | mem0 filters: at least one of user_id, agent_id, app_id, run_id, each a string, "*" or {"in": [up to 20 strings]}; AND lists of those. OR and NOT are not supported. |
memory_key | string | Yes | Your secret: a random string of 16-256 characters that you generate once and keep (also accepted as the X-Memory-Key header). Memories are stored and searched only under its hash, so nobody who lacks it can read them, whatever user_id they send. Lose it and the memories are unreachable. |
query | string | Yes | What to look for, in natural language (up to 500 characters) |
show_expired | boolean | No | Include memories whose expiration_date has passed (default false) |
threshold | number | No | Minimum relevance score, 0-1 (default 0.1; 0 disables) |
top_k | integer | No | How many memories to return, 1-100 (default 10) |
Example response
The provider's example. We can't check it without paying.
{
"results": [
{
"agent_id": null,
"app_id": null,
"categories": [],
"created_at": "2026-10-03T09:00:00.000Z",
"expiration_date": null,
"id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"memory": "User moved to San Francisco from New York.",
"metadata": {
"source": "onboarding"
},
"run_id": null,
"score": 0.82,
"updated_at": null,
"user_id": "alice"
}
]
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.004.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://mem0-cloud.saastemly.com/v3/memories/search' \
-H 'content-type: application/json' \
--data-raw '{"filters":{"user_id":"alice"},"memory_key":"mk_7f3a9c1e5b2d48a6b0c4e9d1","query":"where does the user live?","top_k":5}'
# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://mem0-cloud.saastemly.com/v3/memories/search' \
-H 'content-type: application/json' \
--data-raw '{"filters":{"user_id":"alice"},"memory_key":"mk_7f3a9c1e5b2d48a6b0c4e9d1","query":"where does the user live?","top_k":5}' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
// Pays at most $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fmem0-cloud.saastemly.com%2Fv3%2Fmemories%2Fsearch&method=POST
const res = await pay("https://mem0-cloud.saastemly.com/v3/memories/search", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"filters": {
"user_id": "alice"
},
"memory_key": "mk_7f3a9c1e5b2d48a6b0c4e9d1",
"query": "where does the user live?",
"top_k": 5
}),
});
console.log(res.status, await res.text());Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client
# Pays at most $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.post(
"https://mem0-cloud.saastemly.com/v3/memories/search",
json={
"filters": {
"user_id": "alice",
},
"memory_key": "mk_7f3a9c1e5b2d48a6b0c4e9d1",
"query": "where does the user live?",
"top_k": 5,
},
)
print(res.status_code, res.text)Security scan
No findings
We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 3 h ago | Passed | 402 | 278 ms | $0.004 |
| 7 h ago | Passed | 402 | 319 ms | $0.004 |
| 12 h ago | Passed | 402 | 382 ms | $0.004 |
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Show 10 older checks
| 26 h ago | Passed | 402 | 259 ms | $0.004 |
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| 2 days ago | Passed | 402 | 484 ms | $0.004 |
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| 3 days ago | Passed | 402 | 446 ms | $0.004 |
| 3 days ago | Passed | 402 | 363 ms | $0.004 |