paycrow

Escrow protection for agent payments on Base — USDC held in smart contract until job completion.

使うべきか

品質と安全性

A
説明の品質
100%
スキーマの完全性
100%
命名の品質
80%
ポイズニングのリスク
100%
権限の一致
100%
プロトコルへの準拠
100%

ツール定義とプロトコルへの準拠に関する自動分析に基づいています。

コンテキストコスト

~1,904トークン数(ツール定義)
~1.3 KB一般的なレスポンスサイズ
注意への影響は中程度(128k コンテキストの 1.49%)

これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。

インストール

ワンクリックインストール

これを `claude_desktop_config.json` ファイルに追加してください:

{
  "mcpServers": {
    "paycrow": {
      "command": "npx",
      "args": [
        "paycrow"
      ]
    }
  }
}

実行可能なパッケージ

npmpaycrow1.0.0stdio

リモートエンドポイント

https://paycrow-app.fly.dev/mcpstreamable-http

できること

ツール一覧

ツール(10)

🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟡trust_gate(address, intended_amount_usdc)

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.

入力スキーマ

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

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.

入力スキーマ

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

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.

入力スキーマ

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

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.

入力スキーマ

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

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

入力スキーマ

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

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.

入力スキーマ

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

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

入力スキーマ

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

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.

入力スキーマ

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

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.

入力スキーマ

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "description": "The API endpoint URL to call"
    },
    "seller_address": {
      "type": "string",
      "description": "Ethereum address of the agent you're paying"
    },
    "amount_usdc": {
      "type": "number",
      "minimum": 0.1,
      "maximum": 100,
      "description": "Amount to pay in USDC"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST",
        "PUT",
        "DELETE"
      ],
      "default": "GET",
      "description": "HTTP method (default: GET)"
    },
    "headers": {
      "type": "object",
      "additionalProperties": {
        "type": "string"
      },
      "description": "HTTP headers to include"
    },
    "body": {
      "type": "string",
      "description": "Request body (for POST/PUT)"
    }
  },
  "required": [
    "url",
    "seller_address",
    "amount_usdc"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
⚪x402_protected_call(url, method, headers, body, seller_address, ...)

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

入力スキーマ

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

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