# x402 Tools Hub

> Paid tools for AI agents, free tools for humans. x402 payments on base.

## Tools
- flight-recorder: The black box for x402: inspect every USDC receipt an address got on Base. ($0.001 USDC) -> POST /api/flight-recorder
- agent-passport: Reputation passport for x402 payer wallets: a 0-100 Trust Score from on-chain history. ($0.001 USDC) -> POST /api/agent-passport
- x402-simulate: Cost modeller for x402 workloads: effective price per call, network overhead and break-even. ($0.001 USDC) -> POST /api/x402-simulate
- merchant-trust: Reputation for a receiving wallet: volume, distinct payers, frequency and concentration risk. ($0.001 USDC) -> POST /api/merchant-trust
- agent-registry: Live, stateless directory of agents and merchants built one hop from seed wallets on Base. ($0.001 USDC) -> POST /api/agent-registry
- agent-studio: Build an x402 agent from a short description: manifest, capability check and a dry-run cost model. ($0.002 USDC) -> POST /api/agent-studio
- web-markdown: Convert any public web page into clean, readable Markdown. ($0.001 USDC) -> POST /api/web-markdown
- url-metadata: Extract title, description, OpenGraph tags and favicon from a URL. ($0.001 USDC) -> POST /api/url-metadata
- token-counter: Count LLM tokens for a given text and model family. ($0.0005 USDC) -> POST /api/token-counter
- json-studio: Format, minify, validate, query and diff JSON locally in the browser. ($0.001 USDC) -> POST /api/json-studio
- jwt-inspector: Decode, audit, verify and diff JSON Web Tokens locally in the browser. ($0.001 USDC) -> POST /api/jwt-inspector
- regex-mentor: Test, debug and explain regular expressions with highlighted matches. ($0.001 USDC) -> POST /api/regex-mentor
- encoder-hub: Base64, URL, HTML entities, hex, binary and JWT segment encode/decode. ($0.0005 USDC) -> POST /api/encoder-hub
- diff-pro: Line-level text diff with unified and side-by-side views. ($0.0005 USDC) -> POST /api/diff-pro
- time-toolkit: Convert Unix, ISO, RFC 2822 and natural-language dates; time zones and durations. ($0.0005 USDC) -> POST /api/time-toolkit
- env-studio: Parse .env files, mask secrets and convert to JSON, YAML, docker-compose or shell. ($0.001 USDC) -> POST /api/env-studio
- hash-studio: Compute MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes locally. ($0.0005 USDC) -> POST /api/hash-studio
- color-palette: Palette generator with HEX/RGB/HSL, WCAG contrast and CSS/Tailwind export. ($0.0005 USDC) -> POST /api/color-palette
- unit-converter: Convert length, weight, volume, temperature, area, speed and data units. ($0.0005 USDC) -> POST /api/unit-converter
- git-explainer: Plain-English explanations for git commands and error messages. ($0.0005 USDC) -> POST /api/git-explainer
- meta-tags: Generate SEO, OpenGraph and Twitter Card meta tags with live preview. ($0.0005 USDC) -> POST /api/meta-tags
- wallet-intel: Base wallet snapshot: ETH balance, top ERC-20 tokens, transfer history and a heuristic risk score. ($0.001 USDC) -> POST /api/wallet-intel
- agent-intel: Agent Intelligence: read a page as Markdown, discover counterparties and trust-score a wallet in one pipeline. ($0.002 USDC) -> POST /api/agent-intel
- agent-route: Agent Route: plan the optimal sequence of hub tools for a task, with budget check. ($0.003 USDC) -> POST /api/agent-route
- 402-probe: Probe any URL: is it a live x402 endpoint, and what are its exact payment terms? ($0.002 USDC) -> POST /api/402-probe
- well-known: Read the discovery surface of any origin: well-known/x402, openapi, agent.json, llms.txt, robots.txt. ($0.001 USDC) -> POST /api/well-known
- agent-health: Agent Health: cosmic diagnostics — payment readiness + discovery + latency in one scan. ($0.003 USDC) -> POST /api/agent-health
- address-toolkit: Validate, EIP-55 checksum and classify any EVM address (EOA vs contract). ($0.001 USDC) -> POST /api/address-toolkit
- base-gas: Live Base gas price and transaction cost estimate in USD. ($0.001 USDC) -> POST /api/base-gas
- payment-decoder: Decode a raw PAYMENT-REQUIRED header or 402 body into structured payment fields. ($0.001 USDC) -> POST /api/payment-decoder
- receipt-notary: Notarize a paid response: SHA-256 + timestamp + resource + tx into a compact receipt. ($0.001 USDC) -> POST /api/receipt-notary
- token-inspector: Fact-only token identity for Base: contract vs EOA, ERC-20 vs ERC-721, name, symbol, decimals, total supply and owner. ($0.001 USDC) -> POST /api/token-inspector
- token-quote: Fact-only token quote: price, 24h change, source and timestamp. No advice, no history. ($0.001 USDC) -> POST /api/token-quote
- hn-news: Fresh Hacker News stories by keyword: AI agents, x402, crypto infra, incidents. Public Algolia API, no key. ($0.001 USDC) -> POST /api/hn-news
- x-search: Recent X/Twitter mentions and news by keyword — agent launches, token drama, AI agent incidents. ($0.001 USDC) -> POST /api/x-search
- ai-incidents: Rotating feed of AI agent incidents and risks: failures, bugs, hacks, hallucinations, leaks. HN + Google News. ($0.001 USDC) -> POST /api/ai-incidents

Discovery: https://x402-tools-hub.ivanbenks7-e96.workers.dev/api/list
Stats (on-chain): https://x402-tools-hub.ivanbenks7-e96.workers.dev/api/stats
Status (live): https://x402-tools-hub.ivanbenks7-e96.workers.dev/api/status

## Real paid call (via Coinbase Wallet CLI, awal)

  npx awal x402 pay https://x402-tools-hub.ivanbenks7-e96.workers.dev/api/web-markdown -X POST -d @body.json

awal signs the exact USDC transfer, base64-encodes the payload,
and sends it as the X-PAYMENT header. The hub verifies via the
facilitator and returns the tool result on the first retry.

## Paid example (end-to-end)

1. POST https://x402-tools-hub.ivanbenks7-e96.workers.dev/api/web-markdown  ->  402 Payment Required
2. The 402 body + PAYMENT-REQUIRED header carry accepts[]: scheme=exact,
   network=eip155:8453 (Base), asset=USDC, amount in atomic units, payTo.
3. Sign the exact-transfer, base64 the payload, retry with header X-PAYMENT: <b64>.
4. The hub verifies + settles via the facilitator, then returns the tool result.

The receiving address is discoverable ONLY from the 402 response,
never from this file — by design.