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web-api-tester

Test API endpoints for correctness, edge cases, auth handling, and OpenAPI contract compliance.

Skill by 0x-Professor

IndexedApache-2.0★ 11
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/0x-professor-web-api-tester

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Test API endpoints for correctness, edge cases, auth handling, and OpenAPI contract compliance.

Use cases: documents, backend, testing, security

Reviews

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found
Runs as
Python package

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/web-api-tester

What's inside

Skill name
web-api-tester
Description
Test API endpoints for correctness, edge cases, auth handling, and OpenAPI contract compliance.
License
Apache-2.0
Compatibility
codex, claude-code, claude-ai, agent-skills
Metadata
stage: 7-api-testing · category: web-builder · pipeline: web-builder
Instructions
33 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts

Agent Skills spec issues

  • allowed-tools: must be a space-separated string

Files (4)

  • SKILL.md
  • openai.yaml · agents/
  • tools.md · references/
  • api_tester.py · scripts/

SKILL.md (first lines)

# Web API Tester

## Objective

Run endpoint-level testing against `openapi.yaml` and produce API quality
coverage artifacts.

## Required Workflow

1. Read `openapi.yaml` from `web-backend-builder`.
2. Build API collections for Bruno or Hoppscotch.
3. Optionally generate automated tests in Vitest, Jest, or pytest.
4. For each endpoint test:
   - happy path
   - edge cases (missing fields, invalid types, max payloads)
   - auth failures (`401`, `403`)
   - rate limiting behavior
5. Validate response contracts against OpenAPI using Zod (TS) or Pydantic (Python).
6. Add frontend-backend contract tests for API call compatibility.
7. Generate endpoint and edge-case coverage percentages.
8. Output `api-test-report.json`.

## Execution

```bash
python skills/web-api-tester/scripts/api_tester.py --input <workspace> --output <out.json> --format json
```

## References

- `references/tools.md`

From 0x-Professor/Agent-Skills-Hub, Apache-2.0.

More from 0x-Professor/Agent-Skills-Hub

Signals

Stars
11
Forks
2
Open issues
0
Last commit (this folder)
Feb 25, 2026 (8 months ago)
Last release
Feb 26, 2026 (8 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
Apache-2.0
Repository
github.com/0x-Professor/Agent-Skills-Hub
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

More from 0x-Professor

Cite this page

web-api-tester skill. Agent Mart. https://agentmart.dev/skills/0x-professor-web-api-tester (last updated 2026-10-24)