Framework
Providers using this tag (33)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 1 Complete, well-documented, and agent-ready
Strong 1 Solid coverage with minor gaps
Developing 4 Usable, with meaningful gaps to close
Thin 7 Limited public surface area
Emerging 17 Early or largely undocumented
Minimal 3 Almost no public developer surface
APIs with this tag (51)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Exemplar 3 Complete, well-documented, and agent-ready
Shopify HydrogenHydrogen is Shopify's React-based framework for building custom storefronts powered by the Storefront API. ...Arcade MCP FrameworkThe arcade-mcp open-source Python framework — "MCP Server Framework and Tool Development library for buildi...Novu Framework (Code-First Workflows)Code-first workflow framework that lets developers define notification workflows in TypeScript / JavaScript...
Strong 3 Solid coverage with minor gaps
anecdotes Framework APIA **framework** in anecdotes is a compliance program built from a formally written standard or regulation (...Medusa Framework (Modules, Workflows, Routes)Server-side framework primitives for extending Medusa - custom API Routes, Modules with their own data mode....NET API BrowserComprehensive reference documentation for all .NET APIs including the .NET Runtime, base class libraries, A...
Developing 3 Usable, with meaningful gaps to close
Android Platform APIsCore Android framework APIs for building Android applications.SharePoint Framework (SPFx)The SharePoint Framework (SPFx) is a development model for building client-side web parts, extensions, and ...Shopify HydrogenHydrogen is Shopify's opinionated React-based framework for building headless storefronts powered by the St...
Thin 17 Limited public surface area
Pipecat Framework (Python SDK)Open-source (BSD 2-Clause) Python framework whose interface is the pipecat-ai library, not a REST API. Appl...Haystack Framework (Open Source)Apache-2.0 licensed Python framework for composable LLM orchestration. Build modular Pipelines from Compone...Spring Boot Core FrameworkCore Spring Boot 3 framework providing auto-configuration, embedded server support (Tomcat, Jetty, Undertow...Superlinked Framework (Python)The open-source Apache-2.0 Python framework (pip install superlinked) used to declare Schema, Space, Index,...Dara Application Framework HTTP APIThe HTTP surface exposed by a Dara application. Dara is causaLens' Apache-2.0 open-source Python framework ...AG2 Python FrameworkCore open-source Python library for building agentic AI applications. Provides ConversableAgent, AssistantA...Agno Python FrameworkOpen-source Python framework for building agents with memory, knowledge, and tools. Provides Agent, Team, W...LlamaIndex Python FrameworkLlamaIndex is an open-source Python framework for building LLM-powered applications including agents, RAG p...LlamaIndex TypeScript FrameworkLlamaIndex TypeScript is the JavaScript and TypeScript implementation of the LlamaIndex framework for build...Port Ocean Integration FrameworkOpen-source framework used to build Port integrations that ingest data from third-party systems into the ca...Evidence Framework (SQL + Markdown)The open-source core. SQL statements embedded in Markdown files run against configured data sources and ren...NPP API FrameworkThe NPP API Framework defines the mandatory technical approach and data attributes for APIs built on the Ne...Nuxt.jsThe intuitive Vue framework for building full-stack web applications with Vue.js. Nuxt provides server-side...Vue.js Core APICore Vue.js composition and options API for building reactive user interfaces. Provides reactivity primitiv...Self.ID Framework APIHighest-level React framework abstraction for decentralized identity apps built on Ceramic. Wraps the core,...Apache Mesos Scheduler HTTP APIThe Mesos Scheduler HTTP API at /api/v1/scheduler enables framework schedulers to subscribe to resource off...FumadocsFumadocs is an open-source documentation framework built on Next.js and React for creating fast, modern dev...
Emerging 25 Early or largely undocumented
Nitric API ResourceSDK resource for declaring HTTP APIs and routes in code. Nitric provisions the API gateway (e.g. AWS API Ga...Nitric Bucket ResourceSDK resource for declaring object/file storage buckets with read, write, delete, signed URLs, and bucket-ev...Nitric Key-Value ResourceSDK resource for declaring key-value stores with get, set, delete, and query operations. Nitric maps it to ...Nitric Queue ResourceSDK resource for declaring durable message queues for batch and deferred processing. Nitric maps it to a cl...Nitric Schedule ResourceSDK resource for declaring time-based and cron schedules in code. Nitric provisions the underlying schedule...Nitric Secret ResourceSDK resource for declaring and accessing secrets with versioning. Nitric maps it to a cloud secrets manager...Nitric SQL Database ResourceSDK resource for declaring managed relational (Postgres) databases with migrations. Nitric provisions the c...Nitric Topic ResourceSDK resource for declaring publish/subscribe topics for event-driven architectures. Nitric provisions the c...Nitric Websocket ResourceSDK resource for declaring realtime bidirectional websocket endpoints with connect, disconnect, and message...Superduper FrameworkOpen-source Python framework (superduper-framework) for declaring AI models, embeddings, vector indexes, RA...Socket.IOA widely deployed open-source realtime engine for Node.js (with clients across JavaScript, Java, Swift, Kot...SST FrameworkThe SST framework is an open source CLI and component library distributed via npm (`sst`) and as a Go-based...FastMCP ServerThe FastMCP Server is the Python entry point for exposing tools, resources, prompts, and apps to any Model ...Lura FrameworkThe Lura Framework is an open-source Go library for building ultra-high-performance API gateways with middl...Angular Core APIThe Angular Core API provides the fundamental building blocks of the Angular framework including components...Connexion Python FrameworkConnexion is a contract-first Python web framework that loads an OpenAPI specification and routes requests ...Angular 14 Core APICore Angular 14 framework APIs including components, directives, pipes, dependency injection, and change de...Angular 15 Core APICore Angular 15 framework APIs including stable standalone components, directive composition API, image opt...Angular 17 Core APICore Angular 17 framework APIs featuring stable Signals for reactive state management, deferrable views (@d...Angular 18 Core APICore Angular 18 framework APIs featuring experimental zoneless change detection, stable deferrable views an...Angular 20 Core APICore Angular 20 framework APIs with all fundamental reactivity primitives graduated to stable: signal, effe...AngularJS Core APIThe AngularJS (Angular.js, version 1.x) core framework API for building dynamic single-page web application...Llama StackOpen-source framework standardizing the building blocks for Llama-based generative AI applications, includi...ExpressExpress is a minimal and flexible Node.js web application framework that provides a robust set of features ...Quantum Abstract Machine (QUAM)Framework for abstracting and managing quantum programming environments on top of QUA. Provides an object m...
Companies reaching this through an API (25)
These companies publish an API, specification or operation carrying “Framework” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
AG2
Android
anecdotes
Apache Mesos
Arcade
CausaLens
Connexion
Evidence
Haystack / deepset
Llama
Llamaindex
Lura Project
Medusa
Microsoft .NET
Microsoft SharePoint
Nitric
NPP Australia (AP+)
Port
Quantum Machines
Realtime
Self.ID
Shopify
Shopify Storefront API
Superduper
Superlinked
Score breakdown
Frequency
51.7
log-scaled weighted occurrences
Breadth
0.9
spread across providers
Quality lift
29.4
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor
Related tags
Dependency Injection 8 co-occurrences
Single Page Application 7 co-occurrences
Web Development 9 co-occurrences
Typed Forms 6 co-occurrences
Reactive Forms 6 co-occurrences
Directives 6 co-occurrences
Guards 6 co-occurrences
SSR 6 co-occurrences
Where this tag comes from
Api tag51
Provider tag33
Openapi tag1
Openapi op tag2
Cohort brief
Auto-generatedThe 31 providers in the APIs.io catalog tagged Framework, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
31
all scored
Mean Kin Score
27.3
+3.4 vs catalog 23.9
Mean Agent Readiness
10.2
-1.8 vs catalog 12
Spread
5.3–71.1
median 22.7 · σ 14.3
How the 31 split by band
Exemplar 1Strong 1Developing 4Thin 7Emerging 17Minimal 1
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Operational Transparency | 28.6 | 14 | +14.6 | 31 |
| Developer Ergonomics | 28.2 | 23.4 | +4.8 | 31 |
| Contract Governance | 9.7 | 6.4 | +3.3 | 31 |
| Discoverability | 63.5 | 61.2 | +2.3 | 31 |
| Contract Quality | 21.3 | 19.8 | +1.5 | 31 |
| Access Clarity | 21.7 | 26.5 | -4.8 | 31 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 0% | 10% | -10 |
| MCP server (first-party) | 10% | 13% | -3 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 3% | 11% | -8 |
| Security | 97% | 97% | 0 |
| Arazzo workflows | 3% | 2% | +1 |
| Governance rules | 29% | 14% | +15 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 Novu 71.1
- 2 PydanticAI 54.3
- 3 Encore 54
- 4 Spring Framework 46.2
- 5 SilverStripe 40.4
- 6 Spring Boot 40
- 7 Pipecat 39.2
- 8 Spring Boot 3 36.4
- 9 Spring Data 32.7
- 10 Phidata / Agno 31.6
Top by Agent Readiness
- 1 Novu 44.5
- 2 PydanticAI 41.4
- 3 Encore 31.7
- 4 Fumadocs 23
- 5 Spring Framework 22.3
- 6 Pipecat 19.8
- 7 SilverStripe 18
- 8 Spring Boot 17.3
- 9 Spring Boot 3 17.3
- 10 Spring Data 17.3
All 33 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
15 September 2026, across 27661
providers, using the same computation served by the
APIs.io cohort API. Briefs are published for rosters of
5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.