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dryRun in the CLI (`agent-pay check <url>`) and as a free MCP tool

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3/5
预计耗时
1-2 天
新手友好度
50/100
Issue 类型
功能
描述清晰度
基本清楚
活跃度
活跃
技术栈
typescript
领域
cli, payments

调研方向

Start with the existing dryRun function in the agent-pay SDK and its live fixtures in sdk/test/dry-run.test.ts, then find where agent-pay-mcp registers its tools. Add a CLI check command that wraps dryRun, prints the verdict and chosen option, and exits non-zero on deny, plus a free check_price MCP tool that never sends a payment header. Done when both pass against those fixtures and one real seller, and the docs show them.

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描述

dryRun (agent-pay 0.10.0) answers "what would the policy do with this seller's answer?" with no key and nothing signed. It returns allow, deny with a code, no_challenge or invalid_402. Today you only get it from code.

Proposal:

  • CLI: npx @deepfirstsearch/agent-pay check <url> [--method POST --body …] --registry registry.json. It prints the verdict, the option it would pay, and why. It exits non-zero on deny, so it can gate CI or a cron.
  • MCP: a free check_price tool in agent-pay-mcp, so an agent can see the verdict (and the price) before it calls paid_fetch. It's useful for "is this worth paying for?" decisions and for showing the owner what a call would cost.

Notes:

  • no_challenge means "no terms shown to this caller now": a free route, a free trial or a 404. The tool should say that, not "free".
  • Never send a payment header from check.

Done when: both work against the live fixtures in sdk/test/dry-run.test.ts plus one real seller, and the docs show them.

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TypeScript
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3 小时 51 分钟
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环境准备

从这里开始

  1. 先读完整个 Issue,再读项目的贡献指南。
  2. 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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