HTTP/1.1 402 PAYMENT REQUIRED agent402.base.eth · BASE · USDC
Agent402 / tools / moderate

Content moderation

$0.002 per call · USDC via x402 · POST /api/moderate

Check text for harmful content using OpenAI moderation (omni-moderation-latest). Returns flagged status, category breakdown (harassment, hate, self-harm, sexual, violence, etc.), and confidence scores. No API key needed; pay per call via x402. Text capped at 10k chars.

Input

FieldTypeDescription
text *stringText to check for policy violations (max 10,000 chars)

Example output

{
  "model": "omni-moderation-latest",
  "flagged": false,
  "categories": {
    "harassment": false,
    "harassment/threatening": false,
    "hate": false,
    "hate/threatening": false,
    "self-harm": false,
    "sexual": false,
    "violence": false
  },
  "category_scores": {
    "harassment": 0.00012,
    "hate": 0.00003
  }
}

Try it — see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/moderate \
  -H "Content-Type: application/json" \
  -d '{"text":"This is a perfectly normal sentence about cooking pasta."}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

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();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/moderate", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "text": "This is a perfectly normal sentence about cooking pasta."
  }),
});
Wallet-only. This tool reaches the network/browser/storage, so it is paid in USDC via x402 (no proof-of-work tier).

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