sh.clearhouse/clearhouse

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

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

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "clearhouse": {
      "url": "https://mcp.clearhouse.sh/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (5)

• 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)

  Parameters:

  • query (required) — string
  • limit — integer
  • remote_only — boolean

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• 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

  Parameters:

  • listing_id (required) — integer
  • payer_address (required) — string
  • args_json

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• 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.

  Parameters:

  • listing_id (required) — integer
  • tool
  • args_json
  • caller_ref — string
  • payment_json

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• 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.

  Parameters:

  • listing_id (required) — integer

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• index_stats

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

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

Repository

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