whatagentsbuy

endpoint

https://whatagentsbuy.com/mcp

protocol

streamable-http ·2025-06-18

authentication

none observed

public key

none — nobody has proven they own this listing

karma

0 · newcomer

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

• check_before_paying unknown never probed

  USE WHEN your agent is about to pay an x402 API and you want to know if it is safe and worth it. Returns one verdict for a URL or host in the `verdict` field (gate on that; `light` is the same decision as a colour, for display): CLEAR (nothing alarming), HOLD (pay but resolve the reasons), ABORT (do not pay without checking the live 402), UNRATED (no data). Also returns a confidence tier (verified = a payment to this seller settled AND produced a gradeable result, checked = free probe measured) and its payment history. Folds live price and payTo honesty, phantom paywalls, delivery receipts, and the wash/real-demand read into that one light. Pass detail:true for the full read. Whatever it says, still read the payTo and amount out of the live 402 and sign against those. (Formerly named preflight.)

  mcp-tool

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  {
    "type": "object",
    "required": [
      "url"
    ],
    "properties": {
      "url": {
        "type": "string",
        "description": "Full URL or bare hostname, e.g. https://blockrun.ai/api/v1/exa/search or blockrun.ai"
      },
      "detail": {
        "type": "boolean",
        "description": "Include the full payment-safety detail (live-402 honesty, demand shape, grades). Default false."
      }
    }
  }

  arguments 16 lines copy
• look_up_seller unknown never probed

  USE WHEN you have a specific seller host and want its full track record. Returns every grade earned by actually paying it, what was quoted versus charged, whether goods arrived, its settlement volume, and its Organic Demand Score with the demand-shape read (is the volume real independent demand, or one wallet supplying almost all of it). The deep dossier on one seller; for a quick go/no-go before paying, use check_before_paying instead. (Formerly named get_service.)

  mcp-tool

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  {
    "type": "object",
    "required": [
      "host"
    ],
    "properties": {
      "host": {
        "type": "string",
        "description": "Hostname, e.g. blockrun.ai or api.bitrefill.com"
      }
    }
  }

  arguments 12 lines copy
• rank_sellers unknown never probed

  USE WHEN you want a ranked list of sellers across the market. by='revenue' ranks by raw USDC received (who is busy); by='real_demand' ranks by Organic Demand Score (whose money comes from many independent wallets rather than one wallet supplying almost all of it). The two disagree often, and the disagreement is the point. For accuracy ranking within an objective category, use rank_by_accuracy. (Formerly named top_services.)

  mcp-tool

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  {
    "type": "object",
    "properties": {
      "by": {
        "enum": [
          "revenue",
          "real_demand"
        ],
        "type": "string",
        "default": "revenue"
      },
      "limit": {
        "type": "integer",
        "default": 10,
        "maximum": 50,
        "minimum": 1
      }
    }
  }

  arguments 19 lines copy
• rank_by_accuracy unknown never probed

  USE WHEN a category has an objective right answer (crypto-price, stock-price, fx-rate, gas-price, wallet-balance, weather) and you want the sellers we PAID ranked by how close their returned value was to a primary source that cannot be a reseller (exchange median, chain balanceOf, ECB rates, FMP quote). Top rows are the cheapest accurate sellers. Call with no category to list the available ones. (Formerly named most_accurate.)

  mcp-tool

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  {
    "type": "object",
    "properties": {
      "limit": {
        "type": "integer",
        "description": "How many results (default 10, max 50)"
      },
      "category": {
        "type": "string",
        "description": "One of: crypto-price, stock-price, fx-rate, gas-price, wallet-balance, weather. Omit to list categories."
      }
    }
  }

  arguments 13 lines copy
• market_size unknown never probed

  USE WHEN asked how big x402 is, whether it is growing, or what settled recently. Returns both what actually settled on Base over the last day (from chain logs, per tracked seller) and the live market pulse (24h volume and payments with day-over-day change, a 7-day series, and stablecoin circulation). All measured from chain, not registry counters, which are not demand and can be bought. (Merges the former market_summary and market_pulse.)

  mcp-tool

  1234

  {
    "type": "object",
    "properties": {}
  }

  arguments 4 lines copy
• known_payment_traps unknown never probed

  USE WHEN writing payment code, or before trusting an unfamiliar seller. The field notes: each is a specific way an agent paying an API loses money or is misled, what it cost to learn, and what to do instead. (Formerly named list_traps.)

  mcp-tool

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  {
    "type": "object",
    "properties": {
      "query": {
        "type": "string",
        "description": "Optional filter, e.g. 'price', 'delivery'"
      }
    }
  }

  arguments 9 lines copy
• find_api unknown never probed

  USE WHEN you need an API that does something and want payable options. Searches the whole x402 market for what you describe and returns a ranked, pre-vetted shortlist, proven-accurate sellers first, then payment-safety, then price. Covers every reachable endpoint, not just ones we have bought from. Next step: check_before_paying on your pick, then read the payTo from the live 402 and sign against it.

  mcp-tool

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  {
    "type": "object",
    "required": [
      "task"
    ],
    "properties": {
      "task": {
        "type": "string",
        "description": "What you need, in words or keywords, e.g. 'validate an email address', 'BTC price', 'geocode an address'"
      },
      "limit": {
        "type": "integer",
        "description": "How many results (default 8, max 25)"
      },
      "max_price_usdc": {
        "type": "number",
        "description": "Optional ceiling on the per-call price in USDC"
      },
      "min_reliability": {
        "type": "integer",
        "description": "Optional floor on the reliability score 0-100 (default 0 = no floor; the whole reachable market)"
      },
      "allowed_verdicts": {
        "type": "array",
        "items": {
          "enum": [
            "CLEAR",
            "HOLD",
            "ABORT",
            "UNRATED"
          ],
          "type": "string"
        },
        "description": "Optional policy filter: only return sellers whose current preflight verdict is in this list, e.g. [\"CLEAR\"]. Default: no filter, every result carries its verdict so you can decide."
      }
    }
  }

  arguments 37 lines copy

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.