HTTP Toolkit

HTTP Toolkit is a beautiful, cross-platform, and open-source tool for debugging, testing, and building with HTTP(S) on Windows, Linux, and Mac. It provides a REST API for intercepting HTTP/HTTPS traffic, inspecting requests and responses, automated mocking and rewriting of API traffic, and integrations with Docker, Android, Python, Ruby, Java, Electron, and JavaScript development workflows.

HTTP Toolkit publishes 4 APIs on the APIs.io network, including client API, config API, interceptors API, and 1 more. Tagged areas include HTTP, HTTPS, Debugging, Proxy, and Interception.

The HTTP Toolkit catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

HTTP Toolkit’s developer surface includes authentication, documentation, engineering blog, pricing, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

44.6/100 developing ▬ flat Agent 34/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serve⚡ Free to try

4 APIs

HTTPHTTPSDebuggingProxyInterceptionMockingTestingDeveloper ToolsOpen Source

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 44.6/100 · developing

Contract Quality 16.1 / 25

Developer Ergonomics 4.3 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 0.7 / 13

Governance 7.0 / 12

Discoverability 6.5 / 10

Agent readiness — 34/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/http-toolkit: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

GraphQL 1

GraphQL schemas published by this provider.

Rate Limits 1

Documented rate limits and quota policies.

Http Toolkit Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

Examples 4

Example request and response payloads for these APIs.

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 5

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Bluesky

Bluesky

Mastodon

Mastodon

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

name: HTTP Toolkit
description: HTTP Toolkit is a beautiful, cross-platform, and open-source tool for debugging, testing, and building with HTTP(S)
  on Windows, Linux, and Mac. It provides a REST API for intercepting HTTP/HTTPS traffic, inspecting requests and responses,
  automated mocking and rewriting of API traffic, and integrations with Docker, Android, Python, Ruby, Java, Electron, and
  JavaScript development workflows.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/http-toolkit.png
url: https://raw.githubusercontent.com/api-evangelist/http-toolkit/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
aid: http-toolkit
type: Index
tags:
- HTTP
- HTTPS
- Debugging
- Proxy
- Interception
- Mocking
- Testing
- Developer Tools
- Open Source
apis:
- aid: http-toolkit:http-toolkit-client-api
  name: HTTP Toolkit client API
  description: HTTP client request sending through the proxy
  humanURL: https://httptoolkit.com/docs/
  baseURL: http://localhost:45456
  tags:
  - client
  properties:
  - type: OpenAPI
    url: openapi/http-toolkit-client-api-openapi.yml
  - type: Documentation
    url: https://httptoolkit.com/docs/
  - type: GitHubRepository
    url: https://github.com/httptoolkit/httptoolkit-server
  - type: GraphQL
    url: graphql/http-toolkit-graphql.md
- aid: http-toolkit:http-toolkit-config-api
  name: HTTP Toolkit config API
  description: Proxy configuration and network settings
  humanURL: https://httptoolkit.com/docs/
  baseURL: http://localhost:45456
  tags:
  - config
  properties:
  - type: OpenAPI
    url: openapi/http-toolkit-config-api-openapi.yml
  - type: Documentation
    url: https://httptoolkit.com/docs/
  - type: GitHubRepository
    url: https://github.com/httptoolkit/httptoolkit-server
  - type: GraphQL
    url: graphql/http-toolkit-graphql.md
- aid: http-toolkit:http-toolkit-interceptors-api
  name: HTTP Toolkit interceptors API
  description: Interceptor management for various environments and applications
  humanURL: https://httptoolkit.com/docs/
  baseURL: http://localhost:45456
  tags:
  - interceptors
  properties:
  - type: OpenAPI
    url: openapi/http-toolkit-interceptors-api-openapi.yml
  - type: Documentation
    url: https://httptoolkit.com/docs/
  - type: GitHubRepository
    url: https://github.com/httptoolkit/httptoolkit-server
  - type: GraphQL
    url: graphql/http-toolkit-graphql.md
- aid: http-toolkit:http-toolkit-server-api
  name: HTTP Toolkit server API
  description: Server lifecycle and version management
  humanURL: https://httptoolkit.com/docs/
  baseURL: http://localhost:45456
  tags:
  - server
  properties:
  - type: OpenAPI
    url: openapi/http-toolkit-server-api-openapi.yml
  - type: Documentation
    url: https://httptoolkit.com/docs/
  - type: GitHubRepository
    url: https://github.com/httptoolkit/httptoolkit-server
  - type: GraphQL
    url: graphql/http-toolkit-graphql.md
common:
- type: AgenticAccess
  url: agentic-access/http-toolkit-agentic-access.yml
- type: DomainSecurity
  url: security/http-toolkit-domain-security.yml
- type: Authentication
  url: authentication/http-toolkit-authentication.yml
- type: Website
  url: https://httptoolkit.com
- type: Documentation
  url: https://httptoolkit.com/docs/
- type: GitHubOrg
  url: https://github.com/httptoolkit
- type: LinkedIn
  url: https://www.linkedin.com/company/http-toolkit
- type: Blog
  url: https://httptoolkit.com/blog/
- type: Pricing
  url: https://httptoolkit.com/pricing/
- type: X
  url: https://twitter.com/httptoolkit
- type: Bluesky
  url: https://bsky.app/profile/httptoolkit.com
- type: Mastodon
  url: https://mastodon.social/@httptoolkit
- type: Plans
  url: plans/http-toolkit-plans-pricing.yml
- type: RateLimits
  url: rate-limits/http-toolkit-rate-limits.yml
- type: FinOps
  url: finops/http-toolkit-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com