LinkSafe

Price: $0.010 USDC per call

Endpoint: https://linksafe.melis.ai/verify

Method: POST

Pays to: 0x1C680703D6cF7dfC9FEABb5AA28E64B869ddB3bC

What it does

Full safety check for URLs your agent is about to share with a user or embed in content. Runs a Playwright headless browser sandbox, checks VirusTotal, and traces the full redirect chain. Returns a binary safe/unsafe verdict, a risk score, and a list of specific threats found. Heavier than LinkRisk — use LinkRisk for quick profiling and LinkSafe when you need the authoritative verdict.

When to use it

  • Before sharing a URL in a Telegram or email notification
  • Before embedding a link in a generated document
  • When a user-provided link needs a definitive safety gate

Request schema

{
  "url": "https://link-to-verify.example.com/"
}

Response schema

{
  "safe": false,
  "risk_score": 0.91,
  "threats": [
    "malware",
    "phishing"
  ],
  "final_url": "https://actual-malware-site.example.com/",
  "redirect_chain": [
    "https://link-to-verify.example.com/",
    "https://actual-malware-site.example.com/"
  ],
  "virustotal_positives": 14,
  "checked_at": "2026-05-07T09:15:00Z"
}

Code example — TypeScript via MCP

Install the MCP server once; all 16 services become tool calls.

// Configure @melis-ai/x402-tools-mcp in your MCP client
// Then call the tool:

const result = await mcpClient.callTool("linksafe", {
  "url": "https://link-to-verify.example.com/"
});

console.log(result);
// ["safe","risk_score","threats","final_url","redirect_chain",...
→ MCP setup guide

Code example — Python via direct HTTP

import requests

# x402 payment header must be set by your wallet client
# See x402.org for client libraries

headers = {
    "Content-Type": "application/json",
    "x-payment": "<signed-x402-payment-header>",
}

resp = requests.post(
    "https://linksafe.melis.ai/verify",
    json={
      "url": "https://link-to-verify.example.com/"
    },
    headers=headers,
)
print(resp.json())

Code example — curl with internal key bypass

For testing with an issued internal key (skips x402 payment flow):

curl -X POST https://linksafe.melis.ai/verify \
  -H "Content-Type: application/json" \
  -H "x-internal-key: YOUR_KEY" \
  -d '{"url":"https://link-to-verify.example.com/"}'

How is this different from alternatives?

LinkSafe vs LinkRisk

LinkRisk is the lightweight version at $0.005. Use it first. Only call LinkSafe when a definitive verdict is needed — e.g. before sharing a link with a user or embedding it in published content.

FAQ

Does it work without an account?

Yes. x402 is account-less. Your agent's wallet signs the payment and retries automatically. No registration, no API key, no subscription.

What happens on failure?

Returns HTTP 422 for malformed URLs. SSRF-hardened: private IPs, metadata endpoints blocked.

What is the rate limit?

None published.

Is this open-source?

The service code is closed-source for security reasons. The MCP wrapper that calls it is open-source and MIT-licensed: github.com/mizukaizen/x402-tools-mcp .

Who built this?

Part of the melis.ai agent infrastructure stack. Running on a dedicated Helsinki VPS since early 2026. Contact sean@melis.ai.