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Compose multiple APIs into one hosted, versioned endpoint at a stable URL, callable by your apps and by AI agents over MCP, A2A, or a scoped Agent Token. Where the integration lives after it is written.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | apifunnel.io | diffyn.com |
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| Company | Startup from the United Kingdom · 1 - 9 employees · 2026 | — |
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In their own words, as submitted to SaaSHub.


Stop wiring APIs by hand. API Funnel is a drag-and-drop canvas for building and publishing real API endpoints, no code required. Connect external REST, GraphQL, or SOAP APIs as input nodes, map and transform fields with 70+ built-in transformers, apply if/else conditions, and publish a unified...
No description of Diffyn yet.
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


No analysis of API Funnel yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Build and Deploy APIs Visually. No Code Required!
The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing API Funnel and Diffyn.
API Funnel's answer
Most API aggregation tools require writing code or configuring YAML pipelines. API Funnel lets you build the entire pipeline visually, dragging Input, Output, Cluster and Text nodes onto a canvas and wiring them together, then publishing the result as a single clean endpoint. No glue code, no scattered config files.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
API Funnel's answer
Most tools in this space are code first, you write a manifest or script to define routing and transformation. API Funnel is visual first. If you can see how the data should flow, you can build it, and the canvas doubles as living documentation of the integration instead of a black box config file.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
API Funnel's answer
Developers and small teams juggling multiple third party APIs, each with its own auth, rate limits and response shape, who want one clean endpoint instead of writing and maintaining glue code per integration. Increasingly also AI agent builders who need one well defined API surface for an agent to call.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
API Funnel's answer
Built out of a real frustration, aggregating and transforming a handful of third party APIs for a project kept turning into throwaway backend code that had to be rebuilt for every new integration. API Funnel turns that one off backend work into a reusable visual canvas, so the pipeline becomes the product instead of scaffolding you throw away each time.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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