Restfox

Restfox is an offline-first, minimalistic HTTP and socket testing client for the web and desktop. It is an open-source alternative to Postman, supporting HTTP/REST, WebSocket, and GraphQL testing with environment variables, response history, a plugin system, and cross-platform deployment as a web app, desktop client, or Docker container.

Restfox is listed with 1 API on the APIs.io network. Tagged areas include API Testing, HTTP Client, Browser, Desktop, and Open Source.

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

Restfox’s developer surface includes documentation, release notes, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

19.8/100 emerging ▬ flat Agent 1/100 human only self hosted · MIT Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

AccessFreemium

1 API

API Testing HTTP Client Browser Desktop Open Source GraphQL WebSocket

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 19.8/100 · emerging

Contract Quality 3.4 / 19

Developer Ergonomics 1.4 / 15

Access Clarity 1.2 / 15

Operational Transparency 2.6 / 10

Contract Governance 2.1 / 9

Discoverability 4.3 / 8

Regulatory Posture 1.6 / 15

Open Source Surface 2.5 / 10

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 75 points between them, because both conditional facets apply and carry 25 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/restfox: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Flathub Linux App Publishers (company-published, domain-verified Linux desktop apps)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

GraphQL

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

WebSockets

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 1

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

Restfox

Restfox is a lightweight, offline-first web HTTP client for testing REST APIs, similar to Postman but browser-based. It supports HTTP, WebSocket, and GraphQL protocols, with fea...

GraphQL 1

GraphQL schemas published by this provider.

Restfox GraphQL API

Restfox is a lightweight, offline-first web HTTP client for testing REST APIs, similar to Postman but browser-based. It supports HTTP, WebSocket, and GraphQL protocols, with fea...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Restfox Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Restfox Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Restfox Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Restfox Context

26 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Restfox — jsonschema rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

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

Restfox Collection

7 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Restfox Collection Structure

0 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

Restfox Http Get Example

4 fields

EXAMPLE

Restfox Websocket Example

4 fields

EXAMPLE

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Restfox Domain Security

TLSv1.3

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

IssueTracker

IssueTracker

ReleaseNotes

ReleaseNotes

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

License

License

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Docker

Docker

Source (apis.yml)

aid: restfox
name: Restfox
description: Restfox is an offline-first, minimalistic HTTP and socket testing client for the web and desktop. It is an open-source
  alternative to Postman, supporting HTTP/REST, WebSocket, and GraphQL testing with environment variables, response history,
  a plugin system, and cross-platform deployment as a web app, desktop client, or Docker container.
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: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/restfox.png
x-docs-platform: vitepress
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
tags:
- API Testing
- HTTP Client
- Browser
- Desktop
- Open Source
- GraphQL
- WebSocket
tags_raw:
- API Testing
- HTTP Client
- Browser
- Desktop
- Open Source
- GraphQL
- WebSocket
- Open-Source
url: https://raw.githubusercontent.com/api-evangelist/restfox/refs/heads/main/apis.yml
created: '2026-03-27'
modified: '2026-05-02'
specificationVersion: '0.23'
apis:
- aid: restfox:restfox
  name: Restfox
  description: Restfox is a lightweight, offline-first web HTTP client for testing REST APIs, similar to Postman but browser-based.
    It supports HTTP, WebSocket, and GraphQL protocols, with features including environment variables, response history, and
    an extensible plugin system. Available as a web app, desktop application for macOS, Windows, and Linux, and as a Docker
    container.
  humanURL: https://restfox.dev/
  tags:
  - API Testing
  - HTTP Client
  - Browser
  - Desktop
  - Open Source
  - GraphQL
  - WebSocket
  tags_raw:
  - API Testing
  - HTTP Client
  - Browser
  - Desktop
  - Open Source
  - GraphQL
  - WebSocket
  - Open-Source
  properties:
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/restfox/refs/heads/main/json-schema/restfox-collection-schema.json
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/restfox/refs/heads/main/vocabulary/restfox-vocabulary.yml
  - type: Documentation
    url: https://docs.restfox.dev/
  - type: GettingStarted
    url: https://restfox.dev/
  - type: GitHubRepository
    url: https://github.com/flawiddsouza/Restfox
  - type: Docker
    url: https://hub.docker.com/r/flawiddsouza/restfox
  - url: graphql/restfox-graphql.md
    type: GraphQL
common:
- type: Plans
  url: plans/restfox-plans-pricing.yml
- type: RateLimits
  url: rate-limits/restfox-rate-limits.yml
- type: FinOps
  url: finops/restfox-finops.yml
- type: IssueTracker
  url: https://github.com/flawiddsouza/Restfox/issues
- type: License
  name: MIT
  url: https://github.com/flawiddsouza/Restfox/blob/main/LICENSE
- type: DomainSecurity
  url: security/restfox-domain-security.yml
- type: Website
  url: https://restfox.dev/
- type: Documentation
  url: https://docs.restfox.dev/
- type: GitHubOrganization
  url: https://github.com/flawiddsouza/Restfox
- type: Docker
  url: https://hub.docker.com/r/flawiddsouza/restfox
- type: ReleaseNotes
  url: https://github.com/flawiddsouza/Restfox/releases
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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