# Web Api Tester

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

- **Type:** Skill
- **Install:** `agentstack add skill-0x-professor-agent-skills-hub-web-api-tester`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [0x-Professor](https://agentstack.voostack.com/s/0x-professor)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [0x-Professor](https://github.com/0x-Professor)
- **Source:** https://github.com/0x-Professor/Agent-Skills-Hub/tree/main/skills/web-api-tester

## Install

```sh
agentstack add skill-0x-professor-agent-skills-hub-web-api-tester
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# 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  --output  --format json
```

## References

- `references/tools.md`

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [0x-Professor](https://github.com/0x-Professor)
- **Source:** [0x-Professor/Agent-Skills-Hub](https://github.com/0x-Professor/Agent-Skills-Hub)
- **License:** Apache-2.0

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-0x-professor-agent-skills-hub-web-api-tester
- Seller: https://agentstack.voostack.com/s/0x-professor
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.