About Tollkit
Tollkit is a remote MCP server for agents that need web and document tools, public data, on-chain information and product details. Calls can be paid individually with USDC via x402, with some tools and daily trial calls available without payment.
Key features
- 01Web search and page reading
- 02PDF text extraction
- 03SEC, weather and public data
- 04Crypto and on-chain data
- 05Product price and stock lookup
- 06x402 per-call payments
Use cases
- 01Research a company filing
- 02Extract text from a PDF
- 03Check token prices and safety
- 04Compare product prices and stock
MCP support
Exposes tools through a remote Streamable HTTP MCP endpoint at `https://api.tollkit.dev/mcp`. Paid calls use x402 USDC payments on Base or Solana; some tools are free, and selected tools allow three unpaid calls per day.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://api.tollkit.dev/mcpclaude mcp add --transport http ultrastarz-x402-extract https://api.tollkit.dev/mcp{"mcpServers":{"ultrastarz-x402-extract":{"type":"http","url":"https://api.tollkit.dev/mcp"}}}Open in Cursor{"servers":{"ultrastarz-x402-extract":{"type":"http","url":"https://api.tollkit.dev/mcp"}}}Open in VS Code{"mcpServers":{"ultrastarz-x402-extract":{"type":"http","url":"https://api.tollkit.dev/mcp"}}}{"mcpServers":{"ultrastarz-x402-extract":{"serverUrl":"https://api.tollkit.dev/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
34| Parameter | Type | Required | Description |
|---|---|---|---|
| url | string | Yes | Absolute https:// URL of a single product page. Not a search or category page. |
| payment | string | No | Base64-encoded x402 payment payload. Omit on the first call to receive payment requirements. |
| allow_redirect | boolean | No | Default false. By default a URL that redirects to what looks like a different page (a discontinued item bouncing to its category listing) is refused free of charge, because extracting it would return a real product that is not the one you asked for. Set true if you want whatever the URL resolves to. |
Details
From the project READMETollkit MCP server
Pay-per-call tools for AI agents, as one remote MCP server:
https://api.tollkit.dev/mcp
No account and no API key. Each paid tool costs a fixed amount of USDC, paid per call with x402 on Base or Solana. A call that fails is never charged.
Listed in the official MCP Registry as io.github.UltraStarz/x402-extract.
Connect
Add the URL above as a remote (Streamable HTTP) MCP server in Claude, Cursor or any MCP client. In clients that take a JSON config:
{
"mcpServers": {
"tollkit": { "url": "https://api.tollkit.dev/mcp" }
}
}
Paying: MCP has no 402 status, so a paid tool called without its payment argument returns the price quote as its result. Sign that quote with your x402 wallet and call the tool again with payment set. Six tools are always free: try_it_free (a real sample result), get_service_info, find_service, check_service, check_my_balance and verify_attestation. Fourteen give 3 free calls a day without a payment: read_page, screenshot_page, pdf_to_text, weather_forecast, airport_delays, geocode_address, exchange_rate, ip_lookup, wallet_balance, token_info, transaction_lookup, token_price, token_check and sec_company.
Tools
| Group | Tools | Price per call |
|---|---|---|
| Web pages & documents | web search (with date, site and news filters), search + read top pages, read a page or up to 5 at once in a real browser, screenshot, summarize, page brief, PDF to text | $0.002 – $0.008 |
| Public data | SEC filings, financials, company snapshot and due diligence; weather anywhere in the world (by point, or US address); FAA airport delays; US address geocoding; exchange rates; IP lookup | $0.002 – $0.03 |
| On-chain (Base, Ethereum, Solana) | wallet balance and portfolio, token info, token price, token safety check, transaction lookup, pre-trade check | $0.001 – $0.01 |
| x402 market data | best x402 tools for a task, seller lookup, full market dataset | $0.01 – $0.10 |
| Product data | price, stock, brand, SKU and images from a store page; compare up to 5 | $0.01 – $0.04 |
| Proof | signed, timestamped record of what a page said | $0.05 |
Live prices: /health · every tool with its URL and body: llms.txt · tollkit.dev/tools
Without MCP
Every tool is also a plain HTTP endpoint: POST the JSON body, get HTTP 402 with the price, pay with any x402 client (for example @x402/fetch), repeat the request. OpenAPI per hostname, e.g. https://data.tollkit.dev/openapi.json.
This repo
server.json is the MCP Registry entry. src/ holds an older stdio client (the x402-extract-mcp npm package) that only wraps product extraction and is no longer maintained; use the remote server above instead.
More
- Weekly x402 market report — free
- Live sales · Status
- [email protected] · Tollkit LLC
MIT licensed.
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.