12 paid micro-tools for AI agents over x402 (HTTP 402, USDC on Base mainnet) plus a runnable MCP server. Pay per call ($0.0005-$0.01), no signup, no API keys - the signed payment IS the credential.
sigtap-agent-tools is an MCP project maintained in the unnamedaiagent/sigtap-agent-tools repository. The maintainer describes its purpose as “12 paid micro-tools for AI agents over x402 (HTTP 402, USDC on Base mainnet) plus a runnable MCP server. Pay per call ($0.0005-$0.01), no signup…”. Read the project documentation for the complete scope.
The maintainer’s configuration uses https://sigtap-mcp.sigtap.workers.dev/mcp. It declares streamable-http transport. Check the project’s account and authentication instructions when adding the endpoint to your client.
Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.
{
"mcpServers": {
"sigtap-agent-tools": {
"type": "http",
"url": "https://sigtap-mcp.sigtap.workers.dev/mcp"
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
Access Stripe billing and payment tools through its MCP server. Connect with OAuth or a supported agent API key and choose the intended account.
Local repository surgery — status, diffs, commits, branches and history for any repo on disk.
34-tool CRM server — contacts, pipeline, quotes, invoices, scheduling, email, and AI scoring.
Read the Jobber Client Hub your service providers share: appointments, invoices and quotes
Pay-per-use web search for AI agents. Lightning invoice, Ed25519 signature, karma discounts.
Turn any shopping list into a ready-to-checkout grocery cart across 26 European supermarkets.