About AgentIndex x402
AgentIndex x402 is a paid HTTP and MCP service for search, document conversion, and text-processing tasks. Calls are paid per use in USDC on Base, with no API key or account required.
Key features
- 01Search the web
- 02Convert PDFs and web pages to Markdown
- 03Extract and summarize content
- 04Fact-check and translate text
- 05Discover services and jobs
Use cases
- 01Search for information from an MCP client
- 02Turn a PDF or web page into Markdown
- 03Summarize or fact-check retrieved material
MCP support
Exposes paid tools through a remote Streamable HTTP MCP endpoint. Each call is paid in USDC on Base via x402, with payment handled by the client's wallet.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://x402.agentindex.world/mcp/claude mcp add --transport http world-agentindex-x402 https://x402.agentindex.world/mcp/{"mcpServers":{"world-agentindex-x402":{"type":"http","url":"https://x402.agentindex.world/mcp/"}}}Open in Cursor{"servers":{"world-agentindex-x402":{"type":"http","url":"https://x402.agentindex.world/mcp/"}}}Open in VS Code{"mcpServers":{"world-agentindex-x402":{"type":"http","url":"https://x402.agentindex.world/mcp/"}}}{"mcpServers":{"world-agentindex-x402":{"serverUrl":"https://x402.agentindex.world/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
141| Parameter | Type | Required | Description |
|---|---|---|---|
| query | any | Yes | Search query, or an array of up to 5 related queries to run in one call - results are merged and de-duplicated by URL. |
| extract | boolean | No | Include the search-engine snippet for each result. |
| summarize | boolean | No | Also return a short synthesized answer summarizing the results. |
| max_results | integer | No | Maximum number of results to return. |
| content_chars | integer | No | Maximum Markdown characters returned per fetched result page. |
| content_results | integer | No | How many top result pages to fetch when include_content is true. |
| include_content | boolean | No | Fetch result pages and include clean full-page Markdown. Defaults to true. |
Details
From the project READMEkairos-x402-service
Service HTTP et MCP x402 sur https://x402.agentindex.world — services payants uniquement.
Routes payantes (USDC sur Base) : search, pdf, web-read, extract, summarize, fact-check, translate, jobs, discover.
Découverte technique : GET /capabilities, /.well-known/x402, /.well-known/mcp.json, samples /*/sample, GET /health.
Add to Claude / Cursor
This server is remote (Streamable HTTP) and listed in the official MCP registry as
world.agentindex/x402.
No API key or account needed — each tool call is paid per-use in USDC on Base (x402); your
client's wallet handles the payment. Add it to your MCP config:
{
"mcpServers": {
"agentindex-x402": {
"type": "http",
"url": "https://x402.agentindex.world/mcp/"
}
}
}
- Claude Code: add the block above to
.mcp.jsonin your project root, or runclaude mcp add --transport http agentindex-x402 https://x402.agentindex.world/mcp/. - Claude Desktop: Settings → Connectors → Add custom connector, with the same URL.
- Cursor: add the block above to
.cursor/mcp.json(project) or~/.cursor/mcp.json(global) — thetypefield is optional there.
Déploiement
docker compose build && docker compose up -d
Comments
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