Clearhouse

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One search across every agent registry: 100K+ MCP/A2A/x402 services, signed receipts.

AI & Agents

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Call this server's tools from your browser. Nothing to install.

https://mcp.clearhouse.sh/mcp

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

call_service

Call a listed remote service THROUGH Clearhouse and get a signed receipt. Routes the call via the matching protocol adapter (MCP / A2A / HTTP-x402), enforces spend caps, settles x402 paywalls (dry-run by default), and returns the result plus a cryptographically signed receipt binding intent -> execution -> settlement -> outcome. Args: listing_id: id from search_agents results tool: downstream tool name (omit to list the service's tools) args_json: JSON object of tool arguments caller_ref: opaque caller identifier for the receipt payment_json: for paid services — JSON {"authorization": typed_data.message, "signature": "0x..."} produced by signing quote_call's typed_data with your own key. Clearhouse relays it; it never sees your private key.

listing_idinteger, required

toolstring

args_jsonstring

caller_refstring

payment_jsonstring

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

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Tools (5)

call_service

Argument	Type	Description
tool	any
args_json	any
caller_ref	string
listing_id*	integer
payment_json	any

Input schema (JSON)

{
  "type": "object",
  "title": "call_serviceArguments",
  "required": [
    "listing_id"
  ],
  "properties": {
    "tool": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Tool",
      "default": null
    },
    "args_json": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "object",
          "additionalProperties": true
        }
      ],
      "title": "Args Json",
      "default": "{}"
    },
    "caller_ref": {
      "type": "string",
      "title": "Caller Ref",
      "default": "mcp-client"
    },
    "listing_id": {
      "type": "integer",
      "title": "Listing Id"
    },
    "payment_json": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "object",
          "additionalProperties": true
        },
        {
          "type": "null"
        }
      ],
      "title": "Payment Json",
      "default": null
    }
  }
}

index_stats

How many listings Clearhouse currently indexes, broken down by source registry.

No arguments.

Input schema (JSON)

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

quote_call

Step 1 of a paid call (non-custodial). Fetches the service's payment requirements and returns the exact EIP-712 typed data your agent must sign with ITS OWN key. Nothing is charged until you sign and pass the result to call_service. If the service is free, says so. Args: listing_id: id from search_agents payer_address: your agent's wallet address (the key that will sign) args_json: JSON object of query args for the service

Argument	Type	Description
args_json	any
listing_id*	integer
payer_address*	string

Input schema (JSON)

{
  "type": "object",
  "title": "quote_callArguments",
  "required": [
    "listing_id",
    "payer_address"
  ],
  "properties": {
    "args_json": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "object",
          "additionalProperties": true
        }
      ],
      "title": "Args Json",
      "default": "{}"
    },
    "listing_id": {
      "type": "integer",
      "title": "Listing Id"
    },
    "payer_address": {
      "type": "string",
      "title": "Payer Address"
    }
  }
}

search_agents

Search all indexed agent registries at once. Args: query: capability keywords, e.g. "pdf extraction", "solana rpc", "payments" remote_only: only return services callable over the network right now limit: max results (1-50)

Argument	Type	Description
limit	integer
query*	string
remote_only	boolean

Input schema (JSON)

{
  "type": "object",
  "title": "search_agentsArguments",
  "required": [
    "query"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "title": "Limit",
      "default": 10
    },
    "query": {
      "type": "string",
      "title": "Query"
    },
    "remote_only": {
      "type": "boolean",
      "title": "Remote Only",
      "default": false
    }
  }
}

service_evidence

Observed facts about a listing: live probe results (handshake, latency, HTTP status) and routed-call history (count, success rate, distinct callers). Includes an arithmetic summary_index with published methodology and a confidence tier. This is EVIDENCE for the caller's own decision — not a safety rating, and Clearhouse never selects or executes on your behalf.

Argument	Type	Description
listing_id*	integer

Input schema (JSON)

{
  "type": "object",
  "title": "service_evidenceArguments",
  "required": [
    "listing_id"
  ],
  "properties": {
    "listing_id": {
      "type": "integer",
      "title": "Listing Id"
    }
  }
}