ToolVet
69trust / 100

Holdcheck

by svm402-service in Onchain & crypto

x402 APIFailing, checked 22 h ago

Held-position integrity check — is a token you hold STILL clean? Pass your entry-time liquidity as a baseline. Five tripwires: mint/freeze authority reactivated, honeypot, liquidity collapse (<25% of baseline), risk transformation. Verdict CLEAN / CHEAT_RISK / DEGRADED. Call this on tokens you hold to catch post-buy rug mechanics. — $0.01 USDC

POST
https://svm402.com/holdcheck
Price
n/a
per call in USDC
Uptime
80.8%
last 30 days
Response time
300 ms
406 ms slowest 5%
Last check
Failed
22 h ago, next in 3 h

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 22 h ago: Expected HTTP 402, got 410

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://svm402.com/holdcheck

Each call is paid with the request over x402. We can't price the token it asks for: see Payment terms.

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://svm402.com/holdcheck
content-type: application/json

{
  "address": "DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263",
  "baseline": {
    "liquidity_usd": 611119
  }
}

Parameters

ParameterTypeRequiredDescription
addressstringYesSolana token mint address (base58, 32-44 chars)
baselineobjectNoOptional entry-time snapshot. Only liquidity_usd is consumed (the LP-collapse baseline).

Example response

The provider's example. We can't check it without paying.

{
  "address": "DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263",
  "checked_at": "2026-09-07T12:00:00+00:00",
  "tripwires": [
    {
      "detail": "mint authority revoked",
      "name": "mint_reactivated",
      "tripped": false
    }
  ],
  "verdict": "CLEAN"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://svm402.com/holdcheck' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263","baseline":{"liquidity_usd":611119}}'

# 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://svm402.com/holdcheck' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263","baseline":{"liquidity_usd":611119}}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/svm @solana/kit @scure/base
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactSvmScheme } from "@x402/svm/exact/client";
import { createKeyPairSignerFromBytes } from "@solana/kit";
import { base58 } from "@scure/base";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactSvmScheme(client, { signer: await createKeyPairSignerFromBytes(base58.decode(process.env.SVM_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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsvm402.com%2Fholdcheck&method=POST
const res = await pay("https://svm402.com/holdcheck", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "address": "DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263",
    "baseline": {
      "liquidity_usd": 611119
    }
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,svm]"
import os
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.svm import KeypairSigner
from x402.mechanisms.svm.exact.register import register_exact_svm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_svm_client(client, KeypairSigner.from_base58(os.environ["SVM_PRIVATE_KEY"]))

with x402_requests(client) as session:
    res = session.post(
        "https://svm402.com/holdcheck",
        json={
            "address": "DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263",
            "baseline": {
                "liquidity_usd": 611119,
            },
        },
    )
    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

WhenResultHTTPTimePrice
22 h agoExpected HTTP 402, got 410410146 ms-
27 h agoExpected HTTP 402, got 410410291 ms-
32 h agoExpected HTTP 402, got 410410155 ms-
36 h agoExpected HTTP 402, got 410410318 ms-
40 h agoExpected HTTP 402, got 410410270 ms-
Show 10 older checks
44 h agoPassed402793 ms$0.01
2 days agoPassed402262 ms$0.01
2 days agoPassed402327 ms$0.01
2 days agoPassed402344 ms$0.01
3 days agoPassed402406 ms$0.01
3 days agoPassed402263 ms$0.01
3 days agoPassed402153 ms$0.01
3 days agoPassed402371 ms$0.01
3 days agoPassed402355 ms$0.01
3 days agoPassed402350 ms$0.01