Skill: Text hygiene

Turn a wall of dirty text - chat logs, scraped pages, user-generated content, log dumps - into something safe to store, search, and pipe into the next step. Send POST /api/skill/text-hygiene with the required field text and pay $0.009 per call over x402 or MPP, or call it free by solving a proof-of-work challenge. It returns a JSON object with pack, args, steps and summary.

Measure first, redact PII before anything else touches the data, then dedupe, sort, extract entities, surface keywords, and grade the readability of what's left. Text hygiene skill pack: one x402 payment runs 7 underlying tools (text-stats, redact, dedupe-lines, sort-lines, extract-entities, keywords, readability); partial-success per step.

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Parameters

Example request

curl -i -X POST https://agent402.tools/api/skill/text-hygiene \
  -H "Content-Type: application/json" \
  -d '{"text":"support log dump"}'

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

Example response

{
  "pack": "text-hygiene",
  "args": {
    "text": "support log dump"
  },
  "steps": [
    {
      "slug": "text-stats",
      "ok": true,
      "result": {}
    },
    {
      "slug": "redact",
      "ok": true,
      "result": {}
    },
    {
      "slug": "dedupe-lines",
      "ok": true,
      "result": {}
    },
    {
      "slug": "sort-lines",
      "ok": true,
      "result": {}
    },
    {
      "slug": "extract-entities",
      "ok": true,
      "result": {}
    },
    {
      "slug": "keywords",
      "ok": true,
      "result": {}
    },
    {
      "slug": "readability",
      "ok": true,
      "result": {}
    }
  ],
  "summary": "7/7 steps succeeded"
}

From an MCP client

catalog.call {
  "slug": "skill-text-hygiene",
  "params": {
    "text": "support log dump"
  }
}

On the hosted connector at https://agent402.tools/mcp, catalog.call runs skill-text-hygiene free (rate-limited, no wallet). Local install: npx -y [email protected].

Errors and behavior

• Arguments left out fall back to the pack's own defaults. Each step reports on its own; the call succeeds when at least one step does, and a run where every step fails is refused (400 when the input caused it, 502 otherwise).
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement runs after the tool and only on a successful response. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Free tier: no outbound network call leaves the server for this tool, so proof-of-work (16 leading zero bits of sha256) pays for it.
• A GET or HEAD to /api/skill/text-hygiene 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 is 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?.({ maxAmountPerPayment: "$0.009" }); // refuse any quote above this tool's price
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/skill/text-hygiene", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "text": "support log dump"
  }),
});

No wallet? Pay with compute

Fetch a challenge, solve the sha256 puzzle (16 leading zero bits, a fraction of a second of CPU), and resend with the X-Pow-Solution header:

import { createHash } from "node:crypto";
const lz = (b) => { let t = 0; for (const x of b) { if (!x) { t += 8; continue; } t += Math.clz32(x) - 24; break; } return t; };
const c = await (await fetch("https://agent402.tools/api/pow/challenge?slug=skill-text-hygiene")).json();
let n = 0;
while (lz(createHash("sha256").update(c.challenge + ":" + n).digest()) < c.difficulty) n++;
await fetch("https://agent402.tools/api/skill/text-hygiene", { method: "POST", headers: { "X-Pow-Solution": c.token + ":" + n, "Content-Type": "application/json" }, body: JSON.stringify({"text":"support log dump"}) });

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