Dredd

aid: dredd
name: Dredd
description: Dredd is a language-agnostic, MIT-licensed open source command-line tool that validates a running HTTP API against
  its own API description document. It compiles every request/response pair documented in an API Blueprint, OpenAPI 2.0 or
  (experimentally) OpenAPI 3.0 file into an HTTP transaction, calls the API under test, and reports where the implementation
  and the documentation disagree. Hooks written in Node.js, Ruby, Python, PHP, Perl, Go or Rust handle per-transaction test
  setup and teardown, and pluggable reporters (xunit, dot, markdown, html) wire it into CI. Dredd publishes no API of its
  own — it is a client you install and run. The project has been archived and unmaintained since November 2024; the last release,
  14.1.0, shipped in November 2021.
type: Index
deliveryModel:
  model: self-hosted
  license: MIT
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: self-service
  trial: false
  try_now: false
  public: true
  label: Free and open source
  confidence: high
  source:
  - license
  - plans
  generated: '2026-09-13'
  method: searched
position: Consuming
access: Open Source
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/dredd.png
x-docs-platform: sphinx
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-25
tags:
- Contract Testing
- API Testing
- OpenAPI
- API Blueprint
- Tooling
- Developer Tools
- Command Line
- Continuous Integration
- JSON Schema
- Open Source
tags_raw:
- Contract Testing
- API Testing
- OpenAPI
- API Blueprint
- Tooling
- Developer Tools
- Command Line
- Continuous Integration
- JSON Schema
- Open Source
- JSON-Schema
- Open-Source
url: https://raw.githubusercontent.com/api-evangelist/dredd/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-09-13'
specificationVersion: '0.23'
apis:
- aid: dredd:dredd
  name: Dredd
  description: Dredd is a language-agnostic command-line tool for validating an API description document against a backend
    implementation. It supports API Blueprint, OpenAPI 2.0, and OpenAPI 3.0, and provides hooks for custom test setup and
    teardown.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/dredd.png
  humanURL: https://dredd.org
  tags:
  - Contract Testing
  - API Testing
  - OpenAPI
  - API Blueprint
  properties:
  - type: Documentation
    url: https://dredd.org/en/latest/
  - type: GitHubRepository
    url: https://github.com/apiaryio/dredd
  - type: Packages
    name: dredd on npm
    url: https://www.npmjs.com/package/dredd
  - type: ReleaseNotes
    url: https://github.com/apiaryio/dredd/releases
common:
- type: ContributionGuide
  url: https://github.com/apiaryio/dredd/blob/master/CONTRIBUTING.md
- type: License
  name: MIT
  url: https://github.com/apiaryio/dredd/blob/master/LICENSE
- type: DomainSecurity
  url: security/dredd-domain-security.yml
- type: Website
  url: https://dredd.org
- type: Documentation
  url: https://dredd.org/en/latest/
- type: GitHubOrganization
  url: https://github.com/apiaryio
- type: GettingStarted
  name: Dredd quickstart
  url: https://dredd.org/en/latest/quickstart/
- type: Support
  name: Bug tracker (GitHub issues, repository archived and read-only)
  url: https://github.com/apiaryio/dredd/issues
- type: DockerImage
  name: apiaryio/dredd
  url: https://hub.docker.com/r/apiaryio/dredd
- type: Packages
  name: Dredd packages and hooks handlers
  url: packages/dredd-packages.yml
- type: SDKs
  name: First-party hooks handler libraries
  url: packages/dredd-packages.yml
- type: CLI
  name: Dredd command-line surface
  url: cli/dredd-cli.yml
- type: ChangeLog
  name: Dredd releases
  url: changelog/dredd-changelog.yml
- type: Lifecycle
  name: Versioning, maintenance state and archival
  url: lifecycle/dredd-lifecycle.yml
- type: Conventions
  name: Dredd operating conventions
  url: conventions/dredd-conventions.yml
- type: Conformance
  name: Supported description and validation standards
  url: conformance/dredd-conformance.yml
- type: LLMsTxt
  name: Dredd llms.txt
  url: llms/dredd-llms.txt
- type: Plans
  url: plans/dredd-plans-pricing.yml
- type: RateLimits
  url: rate-limits/dredd-rate-limits.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-09-13'
  status: enriched
  artifacts_added: 8
  pass: local-v3