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Harpd Agent Data MCP Server

by harpd Your server? Claim it
answering

Harpd Agent Data is answering right now. Last checked 7 min ago. It exposes 7 tools.

Live rankings and pricing for 10,000+ AI products and LLMs. Free tier; paid data via x402.

Uptime history 46 days of history · worst day 96%
46 days agonow
100.0%
Uptime 24h
92 of 92 checks
7
Tools
read from the server
759 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 7

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 22 September 2026. No other catalogue keeps this.

22 Sep 3 tools appeared harpd_compare, harpd_optimize, harpd_research
22 Sep 3 tools disappeared compare_products, optimize_model, research_products
22 Sep a tool description was rewritten optimize_model

Tools have disappeared from this server

A tool that vanishes takes a piece of your agent with it, and the change arrives silently. Watch this server and every such change lands in your inbox.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

run in your terminal
claude mcp add agent-data --transport http https://api.harpd.com/mcp
Settings → Connectors → Add custom connector, then paste this address
https://api.harpd.com/mcp
~/.codex/config.toml
[mcp_servers.agent-data]
url = "https://api.harpd.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "agent-data": {
      "url": "https://api.harpd.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "agent-data": {
      "type": "http",
      "url": "https://api.harpd.com/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.

harpd
harpd_compare
Head-to-head comparison of 2–8 AI products: category, published rank, list pricing where the product is a priced model, and the material differences between them. PAID: 0.01 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/compare/
harpd_optimize
Given a task and the model currently running it, returns cheaper candidate models that still clear the task quality floor, with per-call and projected monthly savings, the performance trade-off, a confidence value and the evidence behind every number. PAID: 0.01 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/developers/agents/
harpd_research
A structured research answer over the Harpd catalog: matching products, category distribution, price bands, evidence per claim and the sources behind them. PAID: 0.05 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/research/
historical
get_historical_data
The rank history of one AI product over 3, 6 or 12 months: position over time, rank movement, best and worst position, and the archived period results. This is the one thing a single page view of the board cannot tell an agent — whether a position is rising or falling. PAID: 0.05 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/rank/
products
search_products
Free keyword search over the published Harpd AI product catalog, with category filters and stable machine-readable results. FREE: no payment, no API key, no account required. Canonical: https://harpd.com/products/
rank
get_rank
Free Harpd Rank board for any scope and category, in the unified agent envelope. FREE: no payment, no API key, no account required. Canonical: https://harpd.com/rank/
verify
verify_agent_payment
A deliberately trivial paid product that exists so an agent can prove its whole x402 payment path — 402 challenge, signing, settlement, receipt — before it spends anything on data. Costs $0.01 and returns the request it received plus the settlement receipt. PAID: 0.01 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/developers/agents/

Tools removed

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

compare_products
removed 22 Sep 2026
optimize_model
removed 22 Sep 2026
research_products
removed 22 Sep 2026

Endpoints

URLTransportStateLatencyChecked
https://api.harpd.com/mcp streamable-http answering 840 ms 7 min ago

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Harpd Agent Data — questions

Answers built from our own checks of this server.

What can Harpd Agent Data do?
It exposes 7 tools, read directly from the server on our last check. Among them: get_historical_data, get_rank, harpd_compare, harpd_optimize, harpd_research, search_products 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 Harpd Agent Data working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 759 ms. The bar chart above shows every period we have measured.
Did Harpd Agent Data ever remove tools?
Yes. compare_products, optimize_model, research_products 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 Harpd Agent Data?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Harpd Agent Data need an API key?
No. Harpd Agent Data 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 Harpd Agent Data?
It answers our handshake in 759 ms on average, which is faster than 12% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.