AgentIndex x402 MCP Server

by agentindex Your server? Claim it

answering

AgentIndex x402 is answering right now. Last checked 5 min ago. It exposes 7 tools.

Pay-per-call web search, translation and research jobs for AI agents. USDC on Base, no account.

Uptime history 5 days of history · worst day 98%

5 days agonow

98.9%

Uptime 24h

91 of 92 checks

Tools

read from the server

256 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 14

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 6 September 2026. No other catalogue keeps this.

7 Sep 5 tool descriptions were rewritten detect_language, extract_structured, read_pdf and 2 more

7 Sep 2 tools disappeared fact_check, search

6 Sep 6 tools appeared detect_language, extract_structured, fact_check and 3 more

6 Sep a tool description was rewritten search

AgentIndex x402 does not always answer

Over the last week it answered 99.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add x402 --transport http https://x402.agentindex.world/mcp/

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "x402": {
      "url": "https://x402.agentindex.world/mcp/"
    }
  }
}

~/.codex/config.toml

[mcp_servers.x402]
url = "https://x402.agentindex.world/mcp/"

.cursor/mcp.json

{
  "mcpServers": {
    "x402": {
      "url": "https://x402.agentindex.world/mcp/"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "x402": {
      "url": "https://x402.agentindex.world/mcp/"
    }
  }
}

Available tools 7

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

detect

detect_language

Detect the language of a piece of text - free, no payment. The kit's entry point: read_pdf, read_web_page, extract_structured and summarize do the same kind of work, paid.

extract

extract_structured

Extract structured data from a URL or raw text into strict JSON matching a schema you provide. Fields the content doesn't support come back null - never an invented or approximate value, and an unmatchable schema returns an explicit error. Try GET /extract/sample. Part of the AgentIndex content kit (pdf, web-read, extract, summarize, detect-language) - see GET /capabilities.

jobs

jobs

Multi-query web research, read and synthesized into one sourced JSON brief in a single call - what would otherwise cost an agent twenty calls and its whole context window. Free status polling and result retrieval. Try GET /jobs/sample.

pdf

read_pdf

Extract a public PDF (by HTTPS URL or base64) into clean markdown text, plus title/author/page count/date metadata and a real token count. Deterministic text extraction, no model involved. Try GET /pdf/sample. Part of the AgentIndex content kit (pdf, web-read, extract, summarize, detect-language) - see GET /capabilities.

summarize

summarize

Summarize a URL, raw text or HTML at the length you request - short, medium or long - with the source noted. Neutral and factual, no invented facts. Try GET /summarize/sample. Part of the AgentIndex content kit (pdf, web-read, extract, summarize, detect-language) - see GET /capabilities.

translate

translate

Translate up to 200 text segments in a single call - the same result that would otherwise take 200 separate calls to translate a whole file. Markdown, HTML and {x} placeholders preserved per segment, order and count kept intact, source language auto-detected, automatic fallback across multiple models for uptime, providers that train on submitted prompts excluded. A single string also works. No account, no API key. Try GET /translate/sample.

web

read_web_page

Fetch a URL and return its main article as clean markdown - navigation, ads and boilerplate stripped, links resolved, plus a real token count. The same extraction /search uses on result pages, exposed standalone for a URL you already have. Try GET /web-read/sample. Part of the AgentIndex content kit (pdf, web-read, extract, summarize, detect-language) - see GET /capabilities.

Tools removed

Tools this server used to expose. Anything built against them stopped working on the day they went.

fact_check

removed 7 Sep 2026

search

removed 7 Sep 2026

Endpoints

URL	Transport	State	Latency	Checked
https://x402.agentindex.world/mcp/	streamable-http	answering	553 ms	5 min ago

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AgentIndex x402 — questions

Answers built from our own checks of this server.

What can AgentIndex x402 do?

It exposes 7 tools, read directly from the server on our last check. Among them: detect_language, extract_structured, jobs, read_pdf, read_web_page, summarize and 1 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is AgentIndex x402 working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 92 checks got a reply (98.9%), average response time 256 ms. The bar chart above shows every period we have measured.

Did AgentIndex x402 ever remove tools?

Yes. fact_check, search are no longer exposed — we recorded the date each one disappeared. A tool vanishing usually means a breaking change for anything that depended on it.

How do I connect AgentIndex x402?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does AgentIndex x402 need an API key?

No. AgentIndex x402 completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is AgentIndex x402?

It answers our handshake in 256 ms on average, which is faster than 59% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.