HaneruTo

b612 A2A Agent

Agent2Agent (A2A) protocol surface: an agent card served from https://mcp.hakuto-0209.com/.well-known/agent-card.json (protocolVersion 0.3, JSONRPC transport, version 0.1.0, provider.organization HaneruTo) advertising six skills — principles, review-checklist, patterns, domain-preset, scan-code and rules — invoked as plain-text messages at the JSON-RPC endpoint https://mcp.hakuto-0209.com/a2a/v1 under an x-b612-key licence header (unkeyed requests get a 401 `unauthenticated` envelope whose hint names principles and rules as keyless, 20 req/min per IP). The card carries an EdDSA JWS signature that verifies against the JWKS at /.well-known/jwks.json (kid b612-a2a-2026-09) and is also served unsigned at the legacy /.well-known/agent.json. Streaming and push notifications are declared unsupported.

GitHub

Documentation

📖
Documentation
https://mcp.hakuto-0209.com/terms

Other Resources

🔗
AgentCard
https://raw.githubusercontent.com/api-evangelist/hakuto-0209-com/refs/heads/main/a2a/hakuto-0209-com-a2a.yml
🔗
AgentCard
https://mcp.hakuto-0209.com/.well-known/agent-card.json

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API entry from apis.yml

apis.yml Raw ↑ 
aid: hakuto-0209-com:b612-a2a-agent
name: b612 A2A Agent
description: 'Agent2Agent (A2A) protocol surface: an agent card served from https://mcp.hakuto-0209.com/.well-known/agent-card.json
  (protocolVersion 0.3, JSONRPC transport, version 0.1.0, provider.organization HaneruTo) advertising
  six skills — principles, review-checklist, patterns, domain-preset, scan-code and rules — invoked as
  plain-text messages at the JSON-RPC endpoint https://mcp.hakuto-0209.com/a2a/v1 under an x-b612-key
  licence header (unkeyed requests get a 401 `unauthenticated` envelope whose hint names principles and
  rules as keyless, 20 req/min per IP). The card carries an EdDSA JWS signature that verifies against
  the JWKS at /.well-known/jwks.json (kid b612-a2a-2026-09) and is also served unsigned at the legacy
  /.well-known/agent.json. Streaming and push notifications are declared unsupported.'
humanURL: https://mcp.hakuto-0209.com/
baseURL: https://mcp.hakuto-0209.com/a2a/v1
tags:
- A2A
- agent-native
- Code Review
properties:
- type: AgentCard
  url: a2a/hakuto-0209-com-a2a.yml
- type: AgentCard
  name: A2A Agent Card (provider-hosted, signed)
  url: https://mcp.hakuto-0209.com/.well-known/agent-card.json
- type: Documentation
  url: https://mcp.hakuto-0209.com/terms