HTTP/1.1 402 PAYMENT REQUIRED agent402.base.eth · BASE · SOLANA · POLYGON · ARBITRUM · MONAD · CELO · AVALANCHE · STELLAR · ALGORAND · ROBINHOOD · USDC · USDG
Agent402 / tools / slugify

Slugify

FREE with proof-of-work · or $0.001 in USDC · POST /api/slugify

Turn any text into a URL-safe slug (lowercase, hyphenated, diacritics stripped).

Input

FieldTypeDescription
text *stringText to slugify
separatorstringDefault -

Example output

{
  "slug": "hello-world-2024"
}

Try it - see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/slugify \
  -H "Content-Type: application/json" \
  -d '{"text":"Héllo, Wörld! 2024"}'

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/slugify", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "text": "Héllo, Wörld! 2024"
  }),
});

No wallet? Pay with compute

This is a pure-CPU tool, so an agent without a wallet can pay with proof-of-work instead of USDC: fetch a challenge, solve the sha256 puzzle (16 leading zero bits - a fraction of a second of CPU, no money, no AI tokens), 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=slugify")).json();
let n = 0;
while (lz(createHash("sha256").update(c.challenge + ":" + n).digest()) < c.difficulty) n++;
await fetch("https://agent402.tools/api/slugify", { method: "POST", headers: { "X-Pow-Solution": c.token + ":" + n, "Content-Type": "application/json" }, body: JSON.stringify({"text":"Héllo, Wörld! 2024"}) });

Part of these workflows

This tool is one step in 2 curated multi-tool workflows - agents can fetch the whole sequence as an MCP prompt or call https://agent402.tools/api/skill-packs/{slug}/prompt.

Related tools

Case convert

FREE w/ compute · or $0.001 · POST /api/case

Convert text between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, lower, UPPER.

Text statistics

FREE w/ compute · or $0.001 · POST /api/text-stats

Characters, words, sentences, paragraphs, average word length, reading time, and an LLM token estimate for any text.

Keyword extraction

FREE w/ compute · or $0.002 · POST /api/keywords

Top keywords and two-word phrases by frequency (stopwords removed). Cheap, deterministic signal for routing, tagging, an…