PayCrow MCP

Provides escrow protection and trust scoring for agent commerce on Base. It allows agents to lock USDC in smart contracts, verify counterparty trust via on-chain sources, and resolve disputes through an arbiter review process.

Endpoint and access

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Community listingStreamable HTTPNo sign-inEndpoint checked 2026-11-07Published by PayCrow

MCP endpoint (Streamable HTTP)

https://paycrow-app.fly.dev/mcp

Vendor documentation

What its tools do

10 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Not annotated (10)

trust_gate
trust_score_query
trust_onchain_quick
escrow_create
escrow_release
escrow_dispute
escrow_status
rate_service
safe_pay
x402_protected_call

10 of 10 have a description · 0 of 10 declare behavior hints · 10 of 10 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

Passed Endpoint answered the live check · Nov 7, 2026, 2:04 AM UTC
Availability 1 of 1 checks passed in 30 days

What you can do with it

Lock USDC in smart contract escrow until job completion
Query trust scores using on-chain history and identity sources
Flag bad delivery to lock funds for arbiter dispute resolution
Verify agent trust before initiating payment transactions

Source and maintenance

Community listingRegistry 1.0.0

mcp-registry: io.github.michu5696/paycrow@1.0.0

Protocol and capabilities

Server: paycrow 1.2.0
MCP protocol negotiated in check: 2025-11-25
Tools: 10 advertised
Resources: Not advertised
Resource templates: Not advertised
Prompts: Not advertised

Server-advertised capabilities

{
  "tools": {
    "listChanged": true
  }
}

Tools

10 advertised

trust_gate

Advertised by the server during the last successful anonymous check.

Should you pay this agent? Check before sending money. Returns a go/no-go decision with recommended escrow protection parameters. Unlike other trust services, PayCrow ties trust directly to escrow protection: - High trust → shorter timelock, proceed with confidence - Low trust → longer timelock, smaller amounts recommended - Caution → don't proceed, or use maximum protection This is the tool to call BEFORE escrow_create or safe_pay.

trust_gate input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address"
  ],
  "properties": {
    "address": {
      "type": "string",
      "description": "Ethereum address of the agent you're about to pay"
    },
    "intended_amount_usdc": {
      "type": "number",
      "maximum": 100,
      "minimum": 0.01,
      "description": "How much you plan to pay (helps calibrate the recommendation)"
    }
  },
  "additionalProperties": false
}

trust_score_query

Advertised by the server during the last successful anonymous check.

Full trust score breakdown for an agent address. Aggregates 4 on-chain sources: PayCrow escrow history, ERC-8004 agent identity, Moltbook social karma, and Base chain activity. Returns 0-100 score with per-source details. For a quick go/no-go decision, use trust_gate instead.

trust_score_query input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address"
  ],
  "properties": {
    "address": {
      "type": "string",
      "description": "Ethereum address of the agent to look up"
    }
  },
  "additionalProperties": false
}

trust_onchain_quick

Advertised by the server during the last successful anonymous check.

Quick on-chain reputation check using only the PayCrow Reputation contract. Free, no API keys needed. Use trust_score_query for the full composite score.

trust_onchain_quick input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address"
  ],
  "properties": {
    "address": {
      "type": "string",
      "description": "Ethereum address of the agent to look up"
    }
  },
  "additionalProperties": false
}

escrow_create

Advertised by the server during the last successful anonymous check.

Create a USDC escrow with built-in dispute resolution. Funds are locked on-chain until delivery is confirmed (release) or a problem is flagged (dispute). If disputed, an arbiter reviews and rules — the only escrow service with real dispute resolution on Base.

escrow_create input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "seller",
    "amount_usdc",
    "service_url"
  ],
  "properties": {
    "seller": {
      "type": "string",
      "description": "Ethereum address of the seller/service provider"
    },
    "amount_usdc": {
      "type": "number",
      "maximum": 100,
      "minimum": 0.1,
      "description": "Amount in USDC (e.g., 5.00 for $5)"
    },
    "service_url": {
      "type": "string",
      "description": "URL or identifier of the service being purchased (used for tracking)"
    },
    "timelock_minutes": {
      "type": "number",
      "default": 30,
      "maximum": 43200,
      "minimum": 5,
      "description": "Minutes until escrow expires and auto-refunds (default: 30)"
    }
  },
  "additionalProperties": false
}

escrow_release

Advertised by the server during the last successful anonymous check.

Confirm delivery and release escrowed USDC to the seller. Only call this when you've verified the service/product was delivered correctly.

escrow_release input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "escrow_id"
  ],
  "properties": {
    "escrow_id": {
      "type": "string",
      "description": "The escrow ID to release"
    }
  },
  "additionalProperties": false
}

escrow_dispute

Advertised by the server during the last successful anonymous check.

Flag a problem with delivery — PayCrow's key differentiator. Locks escrowed funds and triggers arbiter review. Unlike other escrow services that say 'no disputes, no chargebacks', PayCrow has real on-chain dispute resolution. Use when service was not delivered or quality was unacceptable.

escrow_dispute input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "escrow_id",
    "reason"
  ],
  "properties": {
    "reason": {
      "type": "string",
      "description": "Brief description of the problem for the arbiter"
    },
    "escrow_id": {
      "type": "string",
      "description": "The escrow ID to dispute"
    }
  },
  "additionalProperties": false
}

escrow_status

Advertised by the server during the last successful anonymous check.

Check the current state of an escrow (funded, released, disputed, expired, etc.)

escrow_status input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "escrow_id"
  ],
  "properties": {
    "escrow_id": {
      "type": "string",
      "description": "The escrow ID to check"
    }
  },
  "additionalProperties": false
}

rate_service

Advertised by the server during the last successful anonymous check.

Rate a completed escrow. After escrow_release, rate the seller's service quality (1-5 stars). This builds the reputation data that makes PayCrow's trust scores meaningful over time. Both sides can rate: buyer rates seller's service quality, seller rates buyer's conduct. Ratings are on-chain and permanent — they feed directly into trust scoring.

rate_service input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "escrow_id",
    "stars"
  ],
  "properties": {
    "stars": {
      "type": "integer",
      "maximum": 5,
      "minimum": 1,
      "description": "Rating 1-5 stars (1=terrible, 5=excellent)"
    },
    "escrow_id": {
      "type": "string",
      "description": "The escrow ID to rate (must be in Released state)"
    }
  },
  "additionalProperties": false
}

safe_pay

Advertised by the server during the last successful anonymous check.

The smart way to pay an agent. Checks their trust score first, then auto-configures escrow protection based on risk. Flow: Check trust → Set protection level → Create escrow → Call API → Verify → Auto-release or auto-dispute. Protection levels (automatic): - High trust agent → 15min timelock, proceed normally - Moderate trust → 60min timelock, payment capped at $25 - Low trust → 4hr timelock, payment capped at $5 - Unknown/caution → BLOCKED — will not send funds This is the recommended tool for paying any agent. If you need manual control, use x402_protected_call instead.

safe_pay input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url",
    "seller_address",
    "amount_usdc"
  ],
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "description": "The API endpoint URL to call"
    },
    "body": {
      "type": "string",
      "description": "Request body (for POST/PUT)"
    },
    "method": {
      "enum": [
        "GET",
        "POST",
        "PUT",
        "DELETE"
      ],
      "type": "string",
      "default": "GET",
      "description": "HTTP method (default: GET)"
    },
    "headers": {
      "type": "object",
      "description": "HTTP headers to include",
      "additionalProperties": {
        "type": "string"
      }
    },
    "amount_usdc": {
      "type": "number",
      "maximum": 100,
      "minimum": 0.1,
      "description": "Amount to pay in USDC"
    },
    "seller_address": {
      "type": "string",
      "description": "Ethereum address of the agent you're paying"
    }
  },
  "additionalProperties": false
}

x402_protected_call

Advertised by the server during the last successful anonymous check.

Make an HTTP API call with manual escrow protection. Full control over verification and timelock parameters. For most payments, use safe_pay instead — it auto-configures protection based on seller trust. Use x402_protected_call when you need: - Custom JSON Schema verification (not just "valid JSON + 2xx") - Hash-lock verification (exact response match) - Specific timelock durations - To override safe_pay's trust-based amount limits

x402_protected_call input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url",
    "seller_address",
    "amount_usdc",
    "verification_data"
  ],
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "description": "The API endpoint URL to call"
    },
    "body": {
      "type": "string",
      "description": "Request body (for POST/PUT)"
    },
    "method": {
      "enum": [
        "GET",
        "POST",
        "PUT",
        "DELETE"
      ],
      "type": "string",
      "default": "GET",
      "description": "HTTP method"
    },
    "headers": {
      "type": "object",
      "description": "HTTP headers to include",
      "additionalProperties": {
        "type": "string"
      }
    },
    "amount_usdc": {
      "type": "number",
      "maximum": 100,
      "minimum": 0.1,
      "description": "Amount to pay in USDC"
    },
    "seller_address": {
      "type": "string",
      "description": "Ethereum address of the API provider (seller) who will receive payment"
    },
    "timelock_minutes": {
      "type": "number",
      "default": 30,
      "maximum": 43200,
      "minimum": 5,
      "description": "Minutes until escrow expires"
    },
    "verification_data": {
      "type": "string",
      "description": "Verification data: JSON Schema string (for schema strategy) or expected hash (for hash-lock)"
    },
    "verification_strategy": {
      "enum": [
        "schema",
        "hash-lock"
      ],
      "type": "string",
      "default": "schema",
      "description": "How to verify the response: 'schema' (JSON Schema) or 'hash-lock' (exact hash match)"
    }
  },
  "additionalProperties": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 569 ms
95th percentile latency: 569 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 7, 2026, 2:04 AM UTC · probe · passed · 569 ms · metadata changed · 10 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http paycrow-mcp https://paycrow-app.fly.dev/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add paycrow-mcp --url https://paycrow-app.fly.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable paycrow-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "paycrow-mcp": {
      "url": "https://paycrow-app.fly.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "paycrow-mcp": {
      "type": "streamableHttp",
      "url": "https://paycrow-app.fly.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start paycrow-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "paycrow-mcp": {
      "type": "http",
      "url": "https://paycrow-app.fly.dev/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http paycrow-mcp https://paycrow-app.fly.dev/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.

Claude Desktop configuration

https://paycrow-app.fly.dev/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "paycrow-mcp": {
      "serverUrl": "https://paycrow-app.fly.dev/mcp"
    }
  }
}

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