---
tool_name: a2a-agent-card
summary: Generate and validate a spec-shaped /.well-known/agent-card.json (protocolVersion 0.2.9, JSONRPC transport).
input:
  file: binary, required # optional existing agent-card.json to merge (max 20MB)
  name: string, required # Agent 名称
  description: string, required # 描述
  url: string, required # 服务端点 URL
  version: string, optional # Agent 版本
  provider_organization: string, optional # 提供方组织
  provider_url: string, optional # 提供方 URL
  capabilities_streaming: enum, optional # 支持流式
  capabilities_push: enum, optional # 支持推送通知
output:
  preview_url: string | watermarked preview, free, no auth
  task_id: string | unique task identifier
  payment_url: string | end-user must complete one-time payment to unlock final output
  final_download_url: string | only available after successful payment
auth: login via email/phone OTP on https://a2a-agent-card.yeezhan.com; API callers use a personal API key (Bearer yeek_...)
payment_rule: one-time charge $0.99 per task. NO credits, NO account balance. One payment unlocks only this task.
valid_window: 24 hours after payment
errors:
  - file_too_large
  - invalid_input
  - unsupported_type
  - target_unreachable
  - processing_failed
endpoint: https://a2a-agent-card.yeezhan.com/api/v1/run
---