Api Tester Playbook

API Tester Playbook

Reference

• ID: S-QA-02
• Category: QA
• Inputs: API specification (OpenAPI/Swagger), auth model, endpoint inventory
• Outputs: API test playbook → artifacts/qa/
• Used by: QA Agent
• Tool scripts: ./tools/artifact/validate.sh, ./tools/qa/contract-test.sh

Purpose

Produces a structured API testing playbook that covers contract testing, authentication and authorization edge cases, pagination correctness, rate limiting behavior, and error response validation for every endpoint.

Procedure

1. Collect the API specification (OpenAPI/Swagger) or endpoint inventory.
2. For each endpoint, generate contract tests: verify response shape matches the schema.
3. Design authentication tests: valid tokens, expired tokens, missing tokens, wrong scopes.
4. Design authorization tests: tenant isolation, role-based access, resource ownership.
5. Design pagination tests: first page, last page, empty results, invalid cursors, page size limits.
6. Design error handling tests: 400 (bad input), 404 (not found), 409 (conflict), 429 (rate limit), 500 (server error).
7. Design idempotency tests for mutating endpoints (POST, PUT, DELETE).
8. Define expected response headers (CORS, cache-control, rate-limit headers).
9. Organize tests into a runnable playbook with setup/teardown steps.
10. Save the playbook to artifacts/qa/.
11. Validate the artifact using ./tools/artifact/validate.sh.

Test Scaffold Generation

After producing the playbook document, generate actual test file scaffolds:

1. Read tech_stack.test_framework and tech_stack.language from company.config.yaml
2. Generate test files based on stack:

• TypeScript + Jest/Vitest: tests/integration/api/.test.ts
• Python + pytest: tests/api/test_.py
• Go + testing: internal//_test.go

1. Each test file includes: setup/teardown, auth helper, one happy-path test, one error test
2. Run ./tools/qa/contract-test.sh to validate against API spec

The playbook document remains as a companion artifact in artifacts/test-plans/.

Quality Checklist

• [ ] Every endpoint has contract tests
• [ ] Auth edge cases (expired, missing, wrong scope) are covered
• [ ] Authorization boundaries are tested (tenant isolation, RBAC)
• [ ] Pagination is tested for boundary conditions
• [ ] Error responses match documented status codes and shapes
• [ ] Mutating endpoints have idempotency tests
• [ ] Rate limiting behavior is validated
• [ ] Artifact passes validation

Source & license

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

• Author: vibbs
• Source: vibbs/company-os
• License: MIT

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