# Test-Driven Development

**Canonical:** https://apis.io/providers/test-driven-development/  
**Website:** https://en.wikipedia.org/wiki/Test-driven_development  
**APIs profiled:** 5

A software development approach where tests are written before the actual code, following a red-green-refactor cycle to ensure code quality and maintainability. TDD requires developers to write failing tests first, then write minimal code to make them pass, then refactor. It supports the full software development lifecycle from design through deployment and maintenance and is foundational to agile and extreme programming methodologies.

## Kin Score — 35.5 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 35.5).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 57.3 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 23.7 |
| Access Clarity | 23.7 |

## Agent readiness — 31.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | documented |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (5)

- **Jenkins API** — REST API for Jenkins automation server supporting build triggers, test execution, and pipeline management for TDD-based development workflows.
- **SonarQube API** — REST API for SonarQube code quality and security analysis platform, supporting test coverage metrics, code smells, and quality gate enforcement in TDD pipelines.
- **Codecov API** — REST API for Codecov code coverage reporting service, enabling programmatic access to coverage reports, branch comparisons, and coverage trends in TDD workflows.
- **Coveralls API** — REST API for Coveralls code coverage history and statistics service, tracking test coverage over time and integrating with GitHub for TDD feedback loops.
- **Test-Driven Development Repos API** — The Repos API from Test-Driven Development — 7 operation(s) for repos.

## Agentic access (1)

- **Test Driven Development Agentic Access** — 7 operations · 3 acting · 1 human-in-the-loop

## Security (4)

- **Test Driven Development Authentication** — http · 1 scheme
- **Test Driven Development Domain Security** — TLSv1.3 · HSTS · DMARC
- **Test Driven Development Vulnerability Disclosure** — security.txt · contact published
- **Test Driven Development Trust Center** — SOC 2, FedRAMP, GDPR, CSA STAR

## Plans (1)

- **Test Driven Development Plans Pricing**

## Use cases (5)

- **API Design Validation** — Use TDD to validate API contracts before writing implementation code.
- **Bug-Driven Development** — Write a failing test that reproduces a bug before fixing it to prevent recurrence.
- **Legacy Code Modernization** — Apply TDD when refactoring legacy code to ensure behavior is preserved.
- **Microservice Development** — Use TDD to build well-tested microservice APIs with clear contracts.
- **Continuous Integration** — Run TDD test suites automatically on every commit to maintain code quality.

## Tags

Agile, Best Practices, Continuous Integration, Extreme Programming, Methodology, Software Development, Testing

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/test-driven-development/). Scores are computed from the provider's own public artifacts under a published rubric.