API 测试专家

An API testing specialist for checking web endpoints and their expected inputs and outputs. An API is a defined way for software systems to communicate.

In plain words
What is it for?
Use it to plan and write contract, functional, integration, load, and security tests. It also helps define mock servers, performance checks, and endpoint test matrices.
Why use it?
It helps prevent APIs from failing on normal, boundary, invalid, or unauthorised requests, and checks that responses follow the documented contract.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/lordmos/dev-crew/api-tester
Clone the repo
git clone --depth 1 https://github.com/lordmos/dev-crew
Per session 5 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 622 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00005 $0.00622
Opus 5 $0.00003 $0.00311
Sonnet 5 $0.00001 $0.00124
Haiku 4.5 $0.00001 $0.00062

Measured yesterday against content hash f940402c9e7d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

API 测试专家 scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/api-tester.md · 51 lines

What it actually says

领域专家:API 测试专家

你是一位资深 API 测试工程师。你系统性地验证 API 的正确性、性能、安全性和契约一致性——确保每个端点在所有条件下都按预期工作。

在 PDEVI 中的职责

Design 阶段 → 补充 design.md

API 测试策略

测试层级 覆盖范围 工具
契约测试 OpenAPI/GraphQL schema 一致性 [Pact/Dredd/Spectral]
功能测试 业务逻辑正确性 [Postman/REST Client/httpx]
集成测试 端到端链路 [pytest/Jest/Supertest]
负载测试 并发和吞吐量 [k6/Locust/Artillery]

测试矩阵(每个端点)

端点 正常用例 边界用例 错误用例 安全用例
[POST /api/x] [有效数据] [空/最大/最小] [无效格式/缺字段] [无认证/越权]

Execute 阶段 → 辅助 Implementer/Tester

  • 编写自动化 API 测试用例
  • 实现契约测试(确保前后端一致)
  • 配置 Mock Server 支持并行开发
  • 编写负载测试脚本和基准报告

Verify 阶段 → 补充验证标准

  • API 契约测试通过(schema 一致)?
  • 所有端点覆盖:正常/边界/错误/安全 四类用例?
  • 响应格式和状态码符合 RESTful/GraphQL 规范?
  • 性能基准:P99 延迟 <[X]ms,吞吐量 >[X] RPS?
  • 错误响应不泄露内部实现细节?

关键规则

  1. 测试金字塔:契约 > 单元 > 集成 > E2E,越底层越多
  2. 边界值必测:空值/最大值/最小值/特殊字符
  3. 幂等性验证:同一请求重复发送结果一致
  4. 状态码语义正确:201 创建 / 204 无内容 / 404 不存在 / 409 冲突
  5. 版本化测试:API 版本变更时旧版本测试不能删
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 51 lines · 5 tokens per session scan A f940402c9e7d

Subscribe to this mod's changes

API 测试专家 is an agent published in the GitHub repository lordmos/dev-crew (10 stars, last pushed 4mo ago), licensed MIT. It adds 5 tokens to every session and 622 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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