Test-Driven Development
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.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Test-Driven Development the way a machine reads it — 43 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Test-Driven Development scores 34.6/100 (thin), with a separate agent-readiness read of 22/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile Test-Driven Development
Each block below is one kind of artifact we hold for Test-Driven Development. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 5
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
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.
Open Collections 3
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONGitHub Actions API (Test-Driven Development) Repos API
OPEN COLLECTIONGitHub Actions API (Test-Driven Development)
OPEN COLLECTIONPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Test Driven Development Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Features 6
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Red-Green-Refactor Cycle
Write failing tests first, implement minimal code to pass them, then refactor while keeping tests green.
Test Coverage Enforcement
Ensure all production code is covered by tests written before implementation.
Continuous Feedback
Get immediate feedback on code correctness through automated test runs on every change.
Design by Contract
Use failing tests to define the API contract and behavior before implementation begins.
Regression Prevention
Build a comprehensive regression suite as a side effect of the TDD development process.
Refactoring Safety
Refactor code with confidence knowing the full test suite will catch regressions.
Semantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Spectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Test-Driven Development API Rules
SPECTRALJSON Schema 3
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
JSON Structure 3
JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.
JSON Structure definitions describing this provider's data shapes.
Test Driven Development Coverage Report Structure
JSON STRUCTURETest Driven Development Cycle Structure
JSON STRUCTURETest Driven Development Test Spec Structure
JSON STRUCTUREExamples 3
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Security Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 5
What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.
What developers build with this provider.
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.
Integrations 5
Pre-built integrations with other platforms tell you where this provider already fits in a stack.
Pre-built integrations with other platforms and tools.
GitHub Actions
Run TDD test suites automatically on pull requests using GitHub Actions workflows.
Jest
Use Jest for JavaScript TDD with fast test execution and snapshot testing.
JUnit
Use JUnit for Java TDD with test lifecycle management and assertion libraries.
pytest
Use pytest for Python TDD with fixtures, parametrize, and plugin ecosystem.
RSpec
Use RSpec for Ruby TDD with behavior-driven development syntax.
Resources
Every other property we hold for Test-Driven Development — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 5
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Access & Security 4
Authentication, authorization, and security posture
← All providers · Data indexed from github.com/api-evangelist/test-driven-development · machine-readable index on apis.io
This is an independent, third-party profile of Test-Driven Development, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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