Agent402 — the open x402 index (Find · Route · Leaderboard) + 1,100 tools for AI agents

What makes it different: Agent402 is open-source and self-hostable — and a single integration gives a buyer three free primitives over the whole x402 ecosystem:

• Find — /api/find?q={task} resolves a task description to the best-matching tools (route, price, schema, ready example).
• Route — POST /api/route is the neutral Smart Order Router: rank tools across every x402 seller crawled (auto-discovered from the Coinbase CDP Bazaar), health-aware, with include=external to exclude us.
• Leaderboard — GET /api/leaderboard is the public on-chain ranking of every x402 seller by Base USDC settled volume — calls served, totalUsd, unique buyers per seller. Pipeline: Bazaar → eth_getLogs → per-call ceiling → aggregate by payTo. Hourly snapshot.

Plus the whole ~1,100-tool catalog, runnable yourself, and agent402-tollbooth — an open pay-per-crawl gate for the other side of x402.

[](https://github.com/MikeyPetrillo/Agent402/actions/work flows/deploy.yml)

Framework adapters (drop-in tools for the major agent stacks — auto-payment underneath):

Give your AI agent ~1,100 ready-to-use web tools from one server — browser rendering, web search, PDFs, images, live data, crypto/payments helpers, and ~1,040 pure-CPU utilities. Run it yourself for free in 30 seconds (MCP or plain HTTP, no API keys, no signup), connect it to Claude/ChatGPT/any MCP client, and add your own tools in a few lines. Every tool is deterministic — no LLM in the serving path — and re-tested against its own example before every release.

Optionally, the same server can charge per call over the x402 protocol (USDC on Base) — so the instance you self-host for free can also be a hosted, monetized one. That part is opt-in; by default everything runs free.

🟢 Hosted demo: agent402.tools · 📖 Wiki · 📦 npm · 🔌 MCP Registry

Run it yourself in 30 seconds

Pick whichever fits — all three are free and need no wallet:

1. Zero install — add the hosted connector to Claude (claude.ai → Settings → Connectors → Add custom connector):

https://agent402.tools/mcp

2. One command — run the MCP server locally (the pure-CPU tools work with no key; it pays the tiny proof-of-work for you):

npx -y agent402-mcp
# in Claude Code:  claude mcp add agent402 -- npx -y agent402-mcp

3. Clone and host the whole thing (all ~1,100 tools as an HTTP API + MCP, free mode, no payments):

git clone https://github.com/MikeyPetrillo/Agent402 && cd Agent402
npm install
FREE_MODE=true npm start          # → http://localhost:3000  (HTTP API + /mcp)

# try a tool over HTTP — no auth in free mode
curl -s -X POST localhost:3000/api/hash -H 'content-type: application/json' \
  -d '{"text":"hello world","algo":"sha256"}'

4. One-click deploy to Railway (full self-hosted instance — adds optional Postgres + Redis plugins for analytics + response caching):

Boots straight from the repo's railway.toml + Dockerfile. Optional plugins are auto-detected via env: add Redis → REDIS_URL enables the upstream response cache (X-Cache: hit|miss), add Postgres → DATABASE_URL enables the public /api/analytics dashboard and the tollbooth waitlist. No env vars required to boot in free mode.

What's in the catalog (~1,100 tools)

	Examples
Browser & web	render (headless Chromium, executes JS), screenshot, extract (article→markdown), meta
Live search	search — a real web index behind one call
PDFs & media	pdf-to-markdown, pdf-merge/extract-pages/rotate, images-to-pdf, audio-convert, audio-normalize (EBU R128,
real ffmpeg)
Images	image-resize, image-convert, image-thumbnail, barcode-decode (jimp/zxing, pure-CPU)
OCR	ocr-image (text out of any image — pure-CPU, no model)
Geo	geo-distance, geo-bbox, geo-bearing, geo-geohash (vincenty / haversine — deterministic)
Live data	fx-rate (ECB), barcode-lookup (Open Food Facts), gov-data (data.gov), weather-forecast/weather-alerts, earthquakes
(USGS)
Network truth	dns, tls-cert, whois, http-check, robots-check, email-validate, ip-info
Crypto & payments	usdc-balance, tx-status, gas-estimate, ens-resolve, x402-quote/verify, transfer-authorization —
non-custodial, multi-chain (Base/Polygon/Arbitrum/Optimism/Ethereum)
Agent memory	wallet-keyed KV + TTL, atomic counters, cross-wallet grants, hash-chained audit log, similarity recall
~1,040 pure-CPU utilities	hashing, JWT, base58, JSON⇄CSV/YAML, token-count, text-chunk, json-validate, text stats, cron math,
validators, ~970 unit conversions

Full schemas live in /openapi.json; a machine-readable catalog is at /api/pricing and /llms.txt. Don't know which tool you need? /api/find?q=<task> resolves a task description to the right tool — route, price, schema, and a ready example — so an agent skips the token-heavy "search around to find a tool" step.

x402 Index — Find · Route · Leaderboard

Agent402 is also the open routing + ranking layer for the whole x402 ecosystem: it crawls public x402 sellers (the local catalog + an auto-discovered set from the Coinbase CDP Bazaar, refreshed hourly) and exposes them through three free surfaces — same logic as /api/find: discovery primitives shouldn't cost money.

Surface	What
GET /api/find?q={task}	Resolve a task to the best-matching tools (route, price, schema, ready example)
POST /api/route	Smart Order Router: { query, top, include } → ranked tools across sellers (match
score, then health, then price). include=external excludes Agent402 itself
GET /api/leaderboard	On-chain ranking of every x402 seller by Base USDC settled volume
(callsSettled, totalUsd, uniqueBuyers per seller). Pipeline: Bazaar → eth_getLogs → per-call ceiling → aggregate. Hourly snapshot
/index	Public HTML dashboard: every seller, tool count, network, last-fetched, rolling health
GET /api/index	JSON snapshot of the same data (totals, per-seller health/routable flags)

# "I need an OCR tool — find me the cheapest healthy one anywhere on x402"
curl -X POST https://agent402.tools/api/route \
  -H 'content-type: application/json' \
  -d '{"query":"ocr image to text","top":5}'

# "Who are the most-used x402 sellers right now? (on-chain proof, not self-reports)"
curl 'https://agent402.tools/api/leaderboard?top=25&include=external'

Health-aware: sellers whose last few crawls errored are excluded from the router (a buyer routed to a dead seller wastes money). Healthier sellers also break ties at equal match score and price, so flaky-but-cheap sellers lose to reliable ones. Brand-new sellers (no history yet) get the benefit of the doubt.

Operators get 3-rail attribution on the dashboard (/api/stats, /__operator): USDC vs. proof-of-work vs. heartbeat-probe traffic are counted separately — and the heartbeat rail is gated on a POW_SECRET-signed token (not a spoofable User-Agent), so the operator view reflects real external demand.

From code, the agent402-client npm package wraps all of this — find() a tool, then call() it, paying automatically (a built-in proof-of-work for free tools, your x402 wallet for paid ones), with caching and idempotent retries:

npm install agent402-client

import { Agent402 } from "agent402-client";
const a = new Agent402();                       // free tier (proof-of-work)
const out = await a.call("hash", { text: "hello world", algo: "sha256" });

Plug into your agent framework (zero-dep adapters)

If you're already on OpenAI / Anthropic / Vercel AI SDK / LangChain / LlamaIndex, skip the wiring — there's a drop-in package that turns the Agent402 catalog into native tool objects for your framework, with payment handled underneath (proof-of-work for free tools, x402+USDC when you pass an @x402/fetch):

Stack	npm	Returns
OpenAI function-calling (chat.completions / Assistants v2 / Responses)
agent402-openai-tools	tools[] for tools: param
Anthropic Messages API (tool_use)	agent402-anthropic-tools	tools[] for
tools: param
Vercel AI SDK (streamText / generateText)	agent402-ai-sdk	Record<name, tool()>
LangChain JS / LangGraph	agent402-langchain	DynamicStructuredTool[]
LlamaIndex TS	agent402-llamaindex	FunctionTool[]
Strands Agents (AWS Bedrock AgentCore)	agent402-strands	StrandsTool[] for `new
Agent({ tools })`

// e.g. OpenAI — every adapter has the same surface.
import OpenAI from "openai";
import { agent402Tools } from "agent402-openai-tools";

const openai = new OpenAI();
const { tools, execute } = await agent402Tools({ slugs: ["extract", "hash", "render"] });
const res = await openai.chat.completions.create({ model: "gpt-4o-mini", tools, messages: [...] });
// when the model returns a tool call: await execute(call.function.name, JSON.parse(call.function.arguments));

Already a Claude/MCP user? agent402-mcp is still the better path — paste https://agent402.tools/mcp into your client. The adapters are for direct API integrations where MCP isn't available. Sources: adapters/.

Add your own tool (~15 lines)

A tool is just an object in a kit array. Drop this into any file in src/tools/ (e.g. append to AGENT_TOOLS in src/tools/agent-kit.js) and it's live — routed, schema-published, MCP-exposed, and covered by the "every tool answers its own example" CI check:

{
  route: "POST /api/reverse",
  name: "Reverse text",
  slug: "reverse",
  category: "text",
  price: "$0.001",                       // free via proof-of-work for pure-CPU tools
  description: "Reverse a string. Example: {\"text\":\"abc\"} → {\"reversed\":\"cba\"}",
  discovery: {
    inputSchema: { properties: { text: { type: "string" } }, required: ["text"] },
    example: { text: "abc" },            // CI calls this and checks it works
  },
  handler: (input) => {
    if (typeof input.text !== "string") { const e = new Error('"text" required'); e.statusCode = 400; throw e; }
    return { reversed: [...input.text].reverse().join("") };
  },
}

That's the whole contract: handler(input) returns a JSON-serializable object (or throws an Error with .statusCode for a 4xx). Pure-CPU tools are automatically free-via-proof-of-work; tools that hit the network or disk stay wallet-only. See CONTRIBUTING.md for the full walkthrough.

Optional: charge per call with x402

The same server can require payment per call — useful if you host a public instance. It's off by default (FREE_MODE=true); to enable, set WALLET_ADDRESS

• CDP facilitator keys (free at portal.cdp.coinbase.com) and agents pay in USDC on Base via standard x402 clients:

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/extract", {
  method: "POST", headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ url: "https://example.com/article" }),
});

Agents without a wallet still use every pure-CPU tool by solving a single-use sha256 proof-of-work (sub-second; the MCP servers do it automatically). Details: wiki: Paying with x402 · Paying with Compute.

Why it's solid

• Everything is tested — CI calls all ~1,100 tools with their own documented examples and blocks the release on any failure; a production heartbeat checks the live instance every 15 minutes.
• Hardened — connect-time SSRF guard on every URL tool (DNS-rebind safe), proof-of-work that's signed/single-use/slug-scoped, per-IP rate limits, and security headers. See wiki: Security Model.
• Deterministic — no model in the serving path, so the same input always gives the same output, with full OpenAPI schemas.
• Auditable, on-chain revenue — every paid call settles in USDC to agent402.base.eth (a Base name resolving to the public receiving wallet) — verifiable by anyone on Basescan; live counts at /api/stats.
• MIT licensed, fork-friendly — clone it, strip what you don't need, add what you do.

Agent402 in the x402 ecosystem

x402 is an open payment protocol built on HTTP 402 Payment Required for machine-to-machine, pay-per-call payments in stablecoins (USDC). Most projects in the space are the protocol + SDKs, a starter template, or a payment facilitator. Agent402 is the applied layer — a ready-to-run x402 server that already speaks the protocol and ships ~1,100 working tools, so you don't have to build the catalog yourself.

• Want the protocol or an SDK? → coinbase/x402.
• Want a server you can run today that actually does things over x402 + MCP? → you're here.
• Self-hostable, deterministic, free via proof-of-work without a wallet, and non-custodial on the payment tools (your agent signs with its own key — Agent402 never holds funds).

Listed in the official MCP Registry and discoverable in the Coinbase x402 Bazaar.

Works with AWS Bedrock AgentCore Payments out of the box — AgentCore orchestrates x402, which is the protocol Agent402 already speaks. Point the AgentCore Gateway at https://agent402.tools/mcp for all ~1,100 tools, or use agent402-strands for a curated subset inside a Strands agent. Five-minute recipe: wiki: AWS Bedrock AgentCore.

Tollbooth — pay-per-crawl for your site (the other side of x402)

Charge AI crawlers that hit your site. Humans browse free; known bots get 402 Payment Required and can pay in USDC over x402 — or solve a free proof-of-work. The open, crypto-native answer to Cloudflare's closed pay-per-crawl: no CDN lock-in, no Stripe, no merchant-of-record, no signup.

• Product page · pricing · live install: agent402.tools/tollbooth
• Managed Tollbooth Cloud (Solo / Team / Agency / Enterprise): agent402.tools/tollbooth/cloud — join the waitlist
• Run it yourself (MIT, npm): npm i agent402-tollbooth · tollbooth/ · tollbooth/README.md

Runs as Express middleware, a Next.js / Vercel Edge middleware, a Cloudflare Worker, a reverse proxy, or a WordPress plugin (beta). Drop-in templates in tollbooth/deploy/. One Web-Crypto core powers all of them.

Repository map

Path	What
src/server.js	Express app + the tool catalog (routes, prices, schemas, discovery)
src/tools/	The tool kits (web, PDF, media, images, live data, crypto/x402, ~1,040 pure-CPU utilities) — add tools here
src/mcp-http.js	Hosted MCP connector (streamable HTTP, authless free tier)
src/pow.js	Proof-of-work tier (signed, single-use, slug-scoped challenges)
src/payments.js	Optional x402 v2 wiring: USDC on Base, CDP facilitator, Bazaar discovery
src/x402-index.js	x402 Index + Smart Order Router: cross-seller crawl, auto-discovery, health-aware routing
mcp/	The agent402-mcp npm package (stdio MCP server)
client/	The agent402-client buyer SDK (find() + call() with auto-payment)
tollbooth/	The agent402-tollbooth pay-per-crawl gate (Express / edge / proxy)
adapters/	Drop-in tools for OpenAI / Anthropic / AI SDK / LangChain / LlamaIndex
wiki/	Source for the GitHub wiki (CI-synced)
scripts/	Tests, demos, ops tooling

Contributing

PRs that add useful tools, fix bugs, or improve docs are very welcome — see CONTRIBUTING.md. MIT licensed. Maintained by Mikey Petrillo.

Changes from the raw README (made because mcp.so rewrites relative links to its own domain, producing broken paths):

• LICENSE, CONTRIBUTING.md, tollbooth, tollbooth/deploy, tollbooth/README.md, client, adapters, src/tools → all rewritten to absolute github.com/MikeyPetrillo/Agent402/... URLs

Everything else (badges, code blocks, tables, headings) is verbatim — that all renders correctly per the snapshot of the other slug.