x402 Freeq One

Pay-per-call MCP gateway with 15 tools — blockchain, markdown, changelog, ZK proofs, and more.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Markdown: Fetch a URL and convert its main content to clean, LLM-ready Markdown (strips nav/ads/sidebars). Options: output_format (markdown|text|json), css_selector, max_length, include_links, include
  • Token Price: Get the live price of a token by symbol (e.g. ETH, USDC, MATIC).
  • Wallet Portfolio: Get a complete wallet portfolio for an Ethereum address: native ETH balance, ERC-20 balances, NFT holdings, recent transfers.

What data it sees

Do you need an account

No: the server works without sign-in

Pay-per-call MCP gateway with 15 tools — blockchain, markdown, changelog, ZK proofs, and more. Each call settled via USDC micropayments on Base.

How to connect

How to connect x402 Freeq One to Claude

The server address to paste into Claude settings:

https://x402-freeq-one.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect x402 Freeq One to ChatGPT

The server address to paste into ChatGPT settings:

https://x402-freeq-one.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect x402 Freeq One to Cursor

The server address to paste into Cursor settings:

https://x402-freeq-one.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (15)

Raw names from tools/list. Only developers need these.

markdownFetch a URL and convert its main content to clean, LLM-ready Markdown (strips nav/ads/sidebars). Options: output_format (markdown|text|json), css_selector, max_length, include_links, include_images.
token_priceGet the live price of a token by symbol (e.g. ETH, USDC, MATIC).
wallet_portfolioGet a complete wallet portfolio for an Ethereum address: native ETH balance, ERC-20 balances, NFT holdings, recent transfers.
whale_alertsScan recent blocks for large ETH transfers involving an address. Filter by direction (in/out/both) and threshold.
cross_chain_balanceAggregate native balance and token/NFT counts for an address across eth, arb, base, polygon, opt.
changelog_openapiDiff two OpenAPI specs and generate a structured breaking-change changelog (no LLM — deterministic diff). Provide base_spec_url and new_spec.
changelog_gitDiff git commits and generate a structured breaking-change changelog. Provide repository_url, base_commit, and optional target_commit.
mermaidRender a Mermaid diagram to an image (PNG or SVG). Returns a base64-encoded image (MCP content type image). Options: format (png|svg), theme (default|dark|forest|neutral), scale (1-4, PNG only).
html_to_markdownConvert an HTML string to clean, LLM-ready Markdown. Handles headings, links, images, tables, lists and code blocks. Options: heading style (atx|setext), bullet list marker, code block style, emphasis delimiters.
qr_generatorGenerate a QR code or barcode as an image (SVG or PNG). Returns a base64-encoded image (MCP content type image). Symbologies: qrcode/qr, code128, code39, ean13, ean8, upca, upce, isbn10, isbn13, issn, itf, gs1-128, databar.
og_image_generatorGenerate an Open Graph social-card image (1200x630 PNG) from a title and description. Returns a base64-encoded image (MCP content type image). Optional image URL embeds a header graphic. Title truncated to 60 chars, description to 120.
jobsSearch live job postings by keywords and locations. Returns structured results: title, company, location, apply URL, work types, employment type, seniority, industry, salary, and description. Supports onsite/remote/hybrid preferences. One call covers the whole market for a keyword + location pair.
verify_semaphoreVerify a Semaphore ZK proof locally using Groth16 (embedded official vkey). No external dependency. Send the proof object from @semaphore-protocol/proof generateProof().
verify_worldidVerify a World ID 4.0 proof via the Worldcoin Developer Portal API. Generates an RP signature server-side, then proxies the full IDKit proof to developer.world.org. Returns { valid, nullifier, worldcoin_response }.
verify_batchBatch verify up to 10 Semaphore proofs in a single request. Returns per-proof results with total count and average duration.