Fluid website screenshot

Fluid

A responsive front-end framework for building flexible and adaptive web layouts.

Fluid publishes 1 API on the APIs.io network. Tagged areas include CSS Framework, Front-End, and Responsive Design.

Fluid’s developer surface includes documentation and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub
19.8/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1
AccessFreemium
1 APIs
CSS FrameworkFront-EndResponsive Design

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1
Composite quality — 19.8/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 3.0 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 4.1 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
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
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/fluid: 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 1

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

Fluid CSS Framework

Fluid is a CSS framework that provides a responsive grid system, UI components, and utility classes for building flexible and adaptive web layouts. It uses ITCSS architecture fo...

Pricing Plans 1

Published pricing tiers and plan structures.

Fluid Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fluid Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Fluid Finops

FINOPS

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 SDKs
SDKs

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: fluid
name: Fluid
description: A responsive front-end framework for building flexible and adaptive web layouts.
type: Index
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/fluid.png
url: https://raw.githubusercontent.com/api-evangelist/fluid/refs/heads/main/apis.yml
created: '2025-01-01'
modified: '2026-04-28'
specificationVersion: '0.19'
tags:
- CSS Framework
- Front-End
- Responsive Design
apis:
- aid: fluid:fluid-css-framework
  name: Fluid CSS Framework
  description: Fluid is a CSS framework that provides a responsive grid system, UI components, and utility classes for building
    flexible and adaptive web layouts. It uses ITCSS architecture for its file and folder structure and is distributed as
    a stylesheet that can be included via CDN or npm.
  humanURL: https://github.com/fluid-framework/Fluid
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://github.com/fluid-framework/Fluid-docs
  - type: GitHubRepository
    url: https://github.com/fluid-framework/Fluid
  tags:
  - CSS Framework
  - Front-End
  - Grid System
  - Responsive Design
common:
- type: Website
  url: https://github.com/fluid-framework/Fluid
- type: GitHubOrganization
  url: https://github.com/fluid-framework
- type: Documentation
  url: https://github.com/fluid-framework/Fluid-docs
- type: SDKs
  url: https://www.npmjs.com/package/fluid-css
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com