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Trust Score API

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Trust scoring for domains, wallets, APIs. SSL+DNS+WHOIS+headers. Score 0-100.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (sse)
Claude Code 
claude mcp add --transport sse trust-score-api 'https://trust-score.api.klymax402.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "trust-score-api": {
            "type": "sse",
            "url": "https://trust-score.api.klymax402.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Trust Score API
  2. Quickstart -- MCP
  3. Quickstart -- HTTP (x402)
  4. Tools
  5. Example agent prompts
  6. Payment
  7. Part of klymax402
  8. License

Trust Score API

Evaluate trustworthiness of any domain, URL, wallet, or API. Returns 0-100 score with 5 sub-scores: SSL, DNS, WHOIS, security headers, content. Zero-cost, zero-dependency. The trust layer agents need before interacting with unknown services. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "trust-score": {
      "url": "https://trust-score.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl -X POST "https://trust-score.api.klymax402.com/api/score" \
  -H "Content-Type: application/json" \
  -d '{"target":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

ToolMethodPathPriceDescription
trust_score_evaluatePOST/api/score$0.02Evaluate trust of a domain, URL, wallet address, or API endpoint. Returns composite score 0-100 with grade (A+ to F), verdict (trusted/moderate/suspicious/dangerous), and 5 detailed sub-scores.
trust_score_batch_comparePOST/api/batch$0.03Compare trustworthiness of 2-5 targets side by side. Returns all scores ranked from most to least trusted.
trust_score_evaluate

Use this when you need to check if a domain, website, API endpoint, or crypto wallet is safe to interact with. Returns a composite trust score 0-100 with letter grade (A+ to F), verdict (trusted/moderate/suspicious/dangerous), and 5 sub-scores:

Parameters

NameTypeRequiredDescription
targetstringyesDomain (example.com), full URL (https://api.example.com/v1), wallet address (0x...), or IP address to evaluate
checksarraynoWhich checks to run. Default: all. Pass a subset like ["ssl","dns"] for faster results (under 2s). Full scan takes 3-8s.

Example response:

{ compositeScore: 82, grade: "A", verdict: "trusted", subscores: { ssl: { score: 90, ... }, dns: { score: 85, ... }, ... } }

When to use: making payments, sending sensitive data, or trusting any external service. Essential for agent safety.

Not for: SEO analysis (use seo_audit_page), email validation (use email_verify_address), tech stack detection (use website_detect_tech_stack), port scanning (use network_scan_ports).

trust_score_batch_compare

Use this when you need to compare the trustworthiness of multiple domains, URLs, or wallets and pick the safest option. Accepts 2-5 targets and returns trust scores for all, sorted from most to least trusted.

Parameters

NameTypeRequiredDescription
targetsarrayyesList of 2-5 domains, URLs, or wallet addresses to evaluate and rank

Not for: single targets (use trust_score_evaluate).

Example agent prompts

  • "Check if a domain, website, API endpoint, or crypto wallet is safe to interact with"
  • "Compare the trustworthiness of multiple domains, URLs, or wallets and pick the safest option"

Payment

  • Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
  • Network: Base L2 (eip155:8453)
  • Asset: USDC
  • Facilitator: Coinbase CDP (primary), PayAI (fallback)
  • Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

License

MIT

Frequently asked questions

What is Trust Score API?

Trust scoring for domains, wallets, APIs. SSL+DNS+WHOIS+headers. Score 0-100.

How do I install Trust Score API?

It runs as a remote server. In Claude Code: claude mcp add --transport sse trust-score-api 'https://trust-score.api.klymax402.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Trust Score API need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Trust Score API open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Trust Score API?

It is published by Br0ski777. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.