x402.freeq.one
Alat di Base melalui fasilitator x402 Coinbase CDP. Agen membayar per permintaan dalam USDC — diselesaikan on-chain dalam hitungan detik. Tidak perlu menyediakan kunci API, tidak perlu mengelola langganan.
Dokumentasi
Pay-per-call MCP.No accounts. No logins. No keys.
20 tools on Base via the Coinbase CDP x402 facilitator. Agents pay per request in USDC — settled on-chain in seconds. No API keys to provision, no subscriptions to manage.
How it works
The x402 protocol turns HTTP 402 Payment Required into an onchain payment flow.
1
Agent reads metadata
GET the endpoint. Receive an OpenAPI spec + x402 payment details (payTo, amount, asset, network).
2
Sees 402 response
Server returns HTTP 402 with a signed payment requirement in USDC on Base or Solana.
3
Signs & pays onchain
Agent wallet broadcasts a USDC microtransaction on Base. No human needed, no account to create.
4
Gets the result
Server verifies the payment header and returns the API response. Done.
All APIs
Each tool is a standalone paid endpoint. Browse the catalog — click any card for details.
markdown $0.001
Fetch a URL and convert its main content to clean, LLM-ready Markdown. Strips nav/ads/sidebars.
POST Details →
token_price $0.002
Get the live price of a token by symbol (e.g. ETH, USDC, MATIC).
GET Details →
wallet_portfolio $0.002
Get a complete wallet portfolio: native ETH balance, ERC-20 balances, NFT holdings, recent transfers.
POST Details →
whale_alerts $0.002
Scan recent blocks for large ETH transfers involving an address. Filter by direction and threshold.
POST Details →
cross_chain_balance $0.002
Aggregate native balance and token/NFT counts for an address across eth, arb, base, polygon, opt.
POST Details →
changelog_openapi $0.005
Diff two OpenAPI specs and generate a structured breaking-change changelog. Deterministic, no LLM.
POST Details →
changelog_git $0.005
Diff git commits and generate a structured breaking-change changelog. Provide repo URL + base commit.
POST Details →
mermaid $0.005
Render a Mermaid diagram to an image (PNG or SVG). Returns base64-encoded image.
POST Details →
html_to_markdown $0.001
Convert an HTML string to clean, LLM-ready Markdown. Handles headings, links, tables, code blocks.
POST Details →
qr_generator $0.001
Generate a QR code or barcode as an image (SVG or PNG). QR, Code128, EAN, UPC, ISBN, and more.
GET Details →
og_image_generator $0.001
Generate an Open Graph social-card image (1200x630 PNG) from a title and description.
GET Details →
jobs $0.002
Search live job postings by keywords and locations. Returns structured results: title, company, location, salary, and more.
POST Details →
verify_semaphore $0.001
Verify a Semaphore ZK proof locally using Groth16 (embedded official vkey). No external dependency — pure on-device verification.
POST Details →
verify_worldid $0.005
Verify a World ID 4.0 proof via the Worldcoin Developer Portal API. Generates RP signature, proxies to Worldcoin, returns nullifier + validity.
POST Details →
verify_batch $0.005
Batch verify up to 10 Semaphore proofs in a single request. Returns per-proof results with timing stats.
POST Details →
wallet_verify_siwe $0.001
Verify a Sign-In-With-Ethereum (EIP-4361) signature as a paid oracle: returns wallet address + chainId, mints nothing.
POST Details →
wallet_verify_nostr $0.001
Verify a NIP-98 Nostr HTTP auth event with replay protection (each event id verifies once). Returns the signer pubkey.
POST Details →
wallet_verify_solana $0.001
Verify an ed25519 Solana wallet signature over a nonce-bearing message. One verification per nonce; returns signer pubkey.
POST Details →
wallet_checksum $0.001
Convert an Ethereum address to its EIP-55 checksummed form — required on SIWE message line 2 before signing.
POST Details →
llm_chat $0.001
Chat with a language model. OpenAI-compatible /v1/chat/completions. 50+ models — free (auto, eco, premium) are $0, paid models at cost.
POST Details →