Harpd Agent Data

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

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

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Harpd Agent Data": {
      "url": "https://api.harpd.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (7)

• get_historical_data read-only

  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/

  Parameters:

  • product (required) — string — Harpd product slug, e.g. "claude".
  • scope — string
  • period — string
  • category — string

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• get_rank read-only

  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/

  Parameters:

  • limit — integer
  • scope — string
  • category — string

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• harpd_compare read-only

  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/

  Parameters:

  • products (required) — array

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• harpd_optimize read-only

  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/

  Parameters:

  • task (required) — string
  • current_model (required) — string
  • max_cost — number
  • constraints — object
  • monthly_calls — integer

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• harpd_research read-only

  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/

  Parameters:

  • query (required) — string
  • limit — integer

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• search_products read-only

  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/

  Parameters:

  • q (required) — string
  • limit — integer
  • category — string

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• verify_agent_payment read-only

  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/

  Parameters:

  • echo — string — Any string; returned unchanged so the caller can correlate the round trip.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.