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Boundra — Payment Approval Gateway for AI Agents

Allow, ask, or veto — a policy decision point your agent consults before signing any payment

使うべきか

品質と安全性

A
説明の品質
95%
スキーマの完全性
67%
命名の品質
96%
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%

検出事項（2）

  • LOWTool 'get_policy' description lacks action verbget_policy 内
  • LOWTool 'get_policy_versions' description lacks action verbget_policy_versions 内

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

~1,595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 1.25%）

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": {
    "boundra": {
      "command": "uvx",
      "args": [
        "boundra-mcp"
      ]
    }
  }
}

実行可能なパッケージ

pypiboundra-mcp0.1.1stdio

リモートエンドポイント

https://api.boundra.io/mcpstreamable-http

できること

ツール一覧

ツール（11）

🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
⚪evaluate_payment(amount, recipient, purpose, expected_amount, source_content, ...)

Evaluate a payment intent. MUST be called before executing any payment. ALLOW = you may pay; DENY = you must abandon; ASK = a challenge is returned — relay the reason to the user, then retry with approval_token once the user signs. An optional mandate parameter carries a user-issued single-task authorization.

入力スキーマ

{
  "type": "object",
  "properties": {
    "amount": {
      "title": "Amount",
      "type": "number"
    },
    "recipient": {
      "title": "Recipient",
      "type": "string"
    },
    "purpose": {
      "title": "Purpose",
      "type": "string"
    },
    "expected_amount": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Expected Amount"
    },
    "source_content": {
      "default": "",
      "title": "Source Content",
      "type": "string"
    },
    "approval_token": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Approval Token"
    },
    "owner": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Owner"
    },
    "agent_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Agent Id"
    },
    "mandate": {
      "anyOf": [
        {
          "additionalProperties": true,
          "type": "object"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Mandate"
    }
  },
  "required": [
    "amount",
    "recipient",
    "purpose"
  ],
  "title": "evaluate_paymentArguments"
}

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "evaluate_paymentOutput"
}
🟡request_policy_change(agent_id, request, reason)

[For agents] Ask the user for a policy/budget change (e.g. 'raise daily budget from 50 to 80'). The request is queued for user approval; the user signs and publishes a new policy version. Agents can NEVER change policy directly.

入力スキーマ

{
  "type": "object",
  "properties": {
    "agent_id": {
      "title": "Agent Id",
      "type": "string"
    },
    "request": {
      "title": "Request",
      "type": "string"
    },
    "reason": {
      "title": "Reason",
      "type": "string"
    }
  },
  "required": [
    "agent_id",
    "request",
    "reason"
  ],
  "title": "request_policy_changeArguments"
}

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "request_policy_changeOutput"
}
🟢get_policy(owner, agent_id)

View the active signed payment policy for an owner (and optionally an agent scope)

入力スキーマ

{
  "type": "object",
  "properties": {
    "owner": {
      "title": "Owner",
      "type": "string"
    },
    "agent_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Agent Id"
    }
  },
  "required": [
    "owner"
  ],
  "title": "get_policyArguments"
}

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "get_policyOutput"
}
🟢get_spend_report(owner)

View today's spend summary for an owner

入力スキーマ

{
  "type": "object",
  "properties": {
    "owner": {
      "title": "Owner",
      "type": "string"
    }
  },
  "required": [
    "owner"
  ],
  "title": "get_spend_reportArguments"
}

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "get_spend_reportOutput"
}
🟢get_audit_trail(owner, limit)

View recent payment-approval audit records for an owner

入力スキーマ

{
  "type": "object",
  "properties": {
    "owner": {
      "title": "Owner",
      "type": "string"
    },
    "limit": {
      "default": 10,
      "title": "Limit",
      "type": "integer"
    }
  },
  "required": [
    "owner"
  ],
  "title": "get_audit_trailArguments"
}

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "get_audit_trailOutput"
}
🟡set_policy(owner, scope, version, nl_rule, prev_hash, ...)

[USER ONLY] Submit a new policy version. Must carry the user's wallet EIP-191 signature over the policy document; accepted only after signature + version-chain checks pass. Agents MUST NOT call this tool.

入力スキーマ

{
  "type": "object",
  "properties": {
    "owner": {
      "title": "Owner",
      "type": "string"
    },
    "scope": {
      "title": "Scope",
      "type": "string"
    },
    "version": {
      "title": "Version",
      "type": "integer"
    },
    "nl_rule": {
      "title": "Nl Rule",
      "type": "string"
    },
    "prev_hash": {
      "title": "Prev Hash",
      "type": "string"
    },
    "created_at": {
      "title": "Created At",
      "type": "number"
    },
    "signature": {
      "title": "Signature",
      "type": "string"
    },
    "agent_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Agent Id"
    }
  },
  "required": [
    "owner",
    "scope",
    "version",
    "nl_rule",
    "prev_hash",
    "created_at",
    "signature"
  ],
  "title": "set_policyArguments"
}

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "set_policyOutput"
}
⚪revoke_policy(owner, scope, revoked_through, created_at, signature, ...)

[USER ONLY] Revoke a policy chain (takes effect immediately; subsequent payments default to DENY). Must carry the user's wallet signature over the revocation statement.

入力スキーマ

{
  "type": "object",
  "properties": {
    "owner": {
      "title": "Owner",
      "type": "string"
    },
    "scope": {
      "title": "Scope",
      "type": "string"
    },
    "revoked_through": {
      "title": "Revoked Through",
      "type": "integer"
    },
    "created_at": {
      "title": "Created At",
      "type": "number"
    },
    "signature": {
      "title": "Signature",
      "type": "string"
    },
    "agent_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Agent Id"
    }
  },
  "required": [
    "owner",
    "scope",
    "revoked_through",
    "created_at",
    "signature"
  ],
  "title": "revoke_policyArguments"
}

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "revoke_policyOutput"
}
🟢get_policy_versions(owner)

View a user's policy version history (version chain + hashes, verifiable against on-chain commitments)

入力スキーマ

{
  "type": "object",
  "properties": {
    "owner": {
      "title": "Owner",
      "type": "string"
    }
  },
  "required": [
    "owner"
  ],
  "title": "get_policy_versionsArguments"
}

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "get_policy_versionsOutput"
}
🟡list_policy_requests

List pending agent policy-change requests

入力スキーマ

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

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "list_policy_requestsOutput"
}
🟢list_templates

List policy templates (personal assistant / travel / dev API / procurement)

入力スキーマ

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

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "list_templatesOutput"
}
⚪render_template(template_id, whitelist, daily, per_tx, ask_above)

Render a natural-language rule from a template + parameters (then compile, sign & publish)

入力スキーマ

{
  "type": "object",
  "properties": {
    "template_id": {
      "title": "Template Id",
      "type": "string"
    },
    "whitelist": {
      "items": {
        "type": "string"
      },
      "title": "Whitelist",
      "type": "array"
    },
    "daily": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Daily"
    },
    "per_tx": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Per Tx"
    },
    "ask_above": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Ask Above"
    }
  },
  "required": [
    "template_id",
    "whitelist"
  ],
  "title": "render_templateArguments"
}

出力スキーマ

{
  "type": "object",
  "properties": {
    "result": {
      "title": "Result",
      "type": "string"
    }
  },
  "required": [
    "result"
  ],
  "title": "render_templateOutput"
}

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