Signal Sprint MCP: paid x402 utilities for your AI app

Set up Signal Sprint in Claude, ChatGPT or Cursor

1. 1Click Connect Signal Sprint free. There's no sign-in, so its tools are ready at once.
2. 2Every tool is on after connecting, and each call is paid in USDC on Base through x402. `signal_sprint_profile_bio` costs $1.00 a call against $0.005 for each lookup, so switch it off unless you want your AI app writing agent bios.
3. 3Add ContextGate to your AI app as a connector or MCP server. The steps for each app are on the Works with page.
4. 4Ask your AI app for the USDC balance of a Base address, then open Activity to see the call.

Lookups Signal Sprint answers

• Check the current USDC balance of an EVM address on Base with `signal_sprint_base_usdc_balance`.
• Read compact public metadata for a Base block hash with `signal_sprint_base_block`.
• Get the current Base gas price in wei and gwei with `signal_sprint_base_gas_price` before you send a transaction yourself.
• Generate a short professional profile bio for an AI agent.

Paid calls, kept visible

• Every Signal Sprint tool is a paid x402 call; switch off the ones you don't need and your AI app can't call them.
• A policy can warn before a call goes through, so a paid lookup gets a second look.
• Activity keeps a record of every paid call that went through ContextGate.

What you get with Signal Sprint and ContextGate

• Your AI apps can use Signal SprintClaude, Cursor, ChatGPT and other AI apps reach Signal Sprint through the one ContextGate connection you add to them.
• You choose which tools they can useSwitch off any Signal Sprint tool you don't want used. It's hidden from your AI apps and refused if called.
• Every call is checked and recordedYour policies check each call (for example, personal data is hidden and secrets are blocked), and Activity keeps a record of it.

ContextGate sees only the tool calls that go through it, not your AI app's built-in tools or your chats.

Signal Sprint tools

Examples of what your AI apps can do in Signal Sprint. You'll see the exact list of tools after you connect it.

• signal_sprint_profile_bioGenerate a concise professional profile bio for an AI agent. Invoke the paid REST endpoint POST /service/profile-bio; the call costs $1.00 USDC on Base through x402 and returns HTTP 402 before settlement.
• signal_sprint_base_usdc_balanceReturn the current USDC balance for an EVM address on Base. The paid REST endpoint GET /service/base-usdc-balance costs $0.005 USDC through x402 and returns the observed block number.
• signal_sprint_base_blockReturn compact public metadata for one Base block hash. The paid REST endpoint GET /service/base-block costs $0.005 USDC through x402 and does not return transaction bodies.
• signal_sprint_base_gas_priceReturn the current Base gas-price observation in wei and decimal gwei. The paid REST endpoint GET /service/base-gas-price costs $0.005 USDC through x402 and includes the observed block number.