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Dify

Ecosystem

Open-source LLM application development platform with a visual workflow builder and API backend, enabling no-code and low-code UCP commerce agent deployments.

Dify is an open-source platform for building and deploying LLM-powered applications. It provides a visual workflow builder, a built-in model management layer, and REST API endpoints for each deployed application. Teams use it to build chatbots, content generation pipelines, and increasingly agent workflows. It can be self-hosted or used through Dify's cloud offering.

Dify's visual workflow builder is its differentiator. Developers and less technical users can build agent workflows by connecting nodes in a graph interface: an LLM node, an HTTP request node for calling UCP endpoints, a conditional branch node for checking inventory before checkout, and an output node. A UCP shopping workflow can be built and deployed without writing agent framework code, using Dify's HTTP node to call the UCP manifest endpoint and subsequent capability endpoints.

Dify's tool integration system supports custom API tools defined by OpenAPI specs. A UCP merchant's API surface can be imported as a Dify tool using the merchant's UCP manifest as the base spec. Once imported, all agents and workflows in the Dify instance have access to that merchant's UCP capabilities.

Dify's self-hosting option is relevant for enterprise commerce deployments where data residency or security requirements prevent using cloud-hosted agent services. A self-hosted Dify instance can orchestrate UCP commerce workflows entirely within the enterprise's infrastructure.

Why This Matters for UCP

Dify lowers the barrier to deploying UCP commerce agents by providing a visual workflow builder and HTTP tool abstraction, enabling teams to wire up UCP endpoints without writing agent framework code.

UCP Capabilities

checkout

UCP Endpoint

Ecosystem — Endpoint not yet publicly available

Integration Example

// Dify HTTP tool configuration for UCP endpoint
// Defined in Dify's tool registry as a custom API tool

// Tool: fetch_ucp_manifest
// Method: GET
// URL: https://{{merchant_domain}}/.well-known/ucp

// Tool: ucp_catalog_search
// Method: POST
// URL: {{manifest.catalogEndpoint}}
// Body (JSON):
// {
//   "query": "{{query}}",
//   "limit": "{{limit}}"
// }

// Tool: ucp_checkout
// Method: POST
// URL: {{manifest.checkoutEndpoint}}
// Body (JSON):
// {
//   "items": {{items}},
//   "paymentToken": "{{payment_token}}",
//   "identityToken": "{{identity_token}}"
// }

// These tools are composed in Dify's visual workflow builder:
// [Start] -> [LLM: interpret intent] -> [HTTP: fetch manifest]
//   -> [HTTP: search catalog] -> [LLM: select items]
//   -> [HTTP: checkout] -> [Output: confirmation]

UCP Status

Ecosystem

Tags

open-sourcevisual-workflowno-codelow-codeself-hostedapi-backend

Pricing

freemium

Added 2026-04-19
Open Source

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Reviews

★★★★★4.7 (3 reviews)

These are illustrative examples to show what reviews will look like. Submit your own experience below.

RK

R. Kapoor

Platform Engineer · Jan 15, 2026

★★★★★

Integrated in an afternoon. Solid implementation with no unexpected edge cases in production.

JS

J. Santos

Senior Engineer · Feb 28, 2026

★★★★★

Integration was straightforward. The UCP endpoint discovery works as documented and checkout completes in under 2 seconds.

ML

M. Lee

Backend Developer · Mar 3, 2026

★★★★

Works well for our use case. The documentation is accurate and the implementation matches what the spec describes.

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