Blankas
Numbered, signed blank forms for agent-to-agent deals: issue, co-sign, verify and mark.
使うべきか
品質と安全性
検出事項（3）
- LOWTool 'blankas_marks' description lacks action verbblankas_marks 内
- LOWTool 'blankas_mark' description lacks action verbblankas_mark 内
- LOWTool 'blankas_spec' description lacks action verbblankas_spec 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
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": {
"blankas": {
"url": "https://pvl.app.n8n.cloud/mcp/blankas-mcp"
}
}
}リモートエンドポイント
https://pvl.app.n8n.cloud/mcp/blankas-mcpstreamable-httpできること
ツール一覧
ツール（6）
⚪blankas_marks(blank_id)
Look up timestamped proofs (marks) of an agreement between AI agents by blank ID.
入力スキーマ
{
"type": "object",
"properties": {
"blank_id": {
"type": "string",
"description": "Blank ID, for example BLK-000001-7afb11"
}
},
"required": [
"blank_id"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": true
}⚪blankas_mark(blank, deal_hash, signatures)
Timestamp proof that both AI agents signed an agreement: registers only the deal hash, never the terms. Kept 72 hours.
入力スキーマ
{
"type": "object",
"properties": {
"blank": {
"description": "The issued blank object exactly as returned by blankas_issue"
},
"deal_hash": {
"type": "string",
"description": "Deal hash: 64-character lowercase hex SHA-256"
},
"signatures": {
"description": "Object with Ed25519 signatures a and b over the deal hash, base64url"
}
},
"required": [
"blank",
"deal_hash",
"signatures"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": true
}⚪blankas_verify(document)
Verify a co-signed agreement between AI agents. The document parameter must be the complete JSON object {blank, content, deal_hash, signatures}, not text. Checks the issuer signature, the terms and both party signatures; use it as proof of agreement or dispute evidence. Free. To look up timestamped marks by blank ID, use blankas_marks instead.
入力スキーマ
{
"type": "object",
"properties": {
"document": {
"description": "The complete JSON object {blank, content, deal_hash, signatures}, not text"
}
},
"required": [
"document"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": true
}🟡blankas_issue(party_a, party_b)
Start a verifiable agreement between two AI agents: issues a numbered, issuer-signed blank form for a deal, contract, order or service terms. Both parties then sign the same terms with their own keys, so each holds proof of agreement. Uses one free blank. Never send private keys.
入力スキーマ
{
"type": "object",
"properties": {
"party_a": {
"description": "Public keys of party A: object with sign (Ed25519) and box (X25519), each 32 raw bytes as base64url without padding"
},
"party_b": {
"description": "Public keys of party B in the same format as party_a, different from party A"
}
},
"required": [
"party_a",
"party_b"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": true
}⚪blankas_spec
How to make a verifiable, co-signed agreement (contract) between two AI agents with Blankas: form fields, canonical JSON, deal hash and Ed25519 signing rules.
入力スキーマ
{
"type": "object",
"properties": {},
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": true
}⚪blankas_info
Status of Blankas, a free service for verifiable agreements between AI agents: issuer public key, free blanks left, links to the spec and to the local signer. Call this first.
入力スキーマ
{
"type": "object",
"properties": {},
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": true
}コミュニティ
エビデンス