Token & contract risk report (on-chain evidence)

Hand over a token contract address (and chain) and get one evidence-based on-chain risk report: whether the source is verified, holder concentration (top-1 / top-10 share of supply, distinguishing pools/contracts from wallets), and supply + market context, with a top-holders appendix. Send POST /v1/token-risk with the required field address and pay $0.60 per call over x402 with USDC on an EVM chain. It returns a JSON object with report, address, chain, sources, tables and 1 more.

Evidence, never a 'safe' or 'scam' verdict - on-chain checks can't see off-chain rugs, so a clean report is not an endorsement. USDC (x402/MPP). Not cached.

Category: LLM gateway · Tags: crypto token risk rug holders concentration contract verified-source

TRY IN PLAYGROUND →

Parameters

Example request

curl -i -X POST https://agent402.tools/v1/token-risk \
  -H "Content-Type: application/json" \
  -d '{"address":"0x4200000000000000000000000000000000000006","chain":"base"}'

Without payment this returns HTTP 402 Payment Required with the exact price for token-risk; any x402 v2 or MPP client pays it and retries.

Example response

{
  "report": "# Token & Contract Risk Report: EXAMPLE (0x…)\n\n## Snapshot\n...\n\n## Risk summary\n... This is not financial advice and not exhaustive.",
  "address": "0x0000000000000000000000000000000000000000",
  "chain": "base",
  "sources": [],
  "tables": [
    {
      "name": "holders",
      "label": "Top holders",
      "columns": [
        "Rank",
        "Address",
        "Share of supply",
        "Type",
        "Label"
      ],
      "rows": [
        [
          "1",
          "0x…",
          "42.10%",
          "contract",
          "Uniswap V3 Pool"
        ]
      ]
    }
  ],
  "meta": {
    "tier": "token-risk",
    "address": "0x…",
    "chain": "base",
    "name": "Example",
    "symbol": "EXMP",
    "verified_source": true,
    "holder_count": 1234,
    "top1_share_pct": 42.1,
    "top10_share_pct": 71.5,
    "synthesis_model": "anthropic/claude-opus-5",
    "disclaimer": "Evidence-based on-chain risk signals only. Not financial advice."
  }
}

From an MCP client

catalog.call {
  "slug": "token-risk",
  "params": {
    "address": "0x4200000000000000000000000000000000000006",
    "chain": "base"
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for token-risk; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• address is required. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example, so the caller can correct it.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails.
• Wallet-only: this tool runs a model, so it has no proof-of-work tier. A prepaid card-credits key (Authorization: Bearer a402_...) also pays it.
• Model-backed: the answer is generated by a model, so the same input can produce different wording.
• Long-running: payment settles after the work finishes, so only EVM exact payments are offered.
• A GET or HEAD to /v1/token-risk returns the same 402 quote, so the price can be read without a body.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB and a streamed response are not replayed).

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();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/v1/token-risk", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "address": "0x4200000000000000000000000000000000000006",
    "chain": "base"
  }),
});

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