aid: open-webui
url: https://raw.githubusercontent.com/api-evangelist/open-webui/refs/heads/main/apis.yml
name: Open WebUI
x-type: company
description: >-
  Open WebUI is a self-hosted, open-source web UI for LLMs (notably Ollama and OpenAI-compatible
  backends). It exposes a REST API for chats, models, prompts, knowledge (RAG), users, and tools.
  Distributed under a modified BSD-3-Clause license; primarily run via Docker or pip on your own
  infrastructure.
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
  - LLM
  - Open Source
  - Self-Hosted
  - Ollama
  - Chat UI
  - RAG
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.19'
apis:
  - aid: open-webui:platform
    name: Open WebUI API
    description: >-
      REST API exposed by a self-hosted Open WebUI instance. Endpoints cover chat completions (proxying
      upstream backends like Ollama or OpenAI-compatible servers), models, prompts, knowledge bases,
      files, RAG, users, auth, and tools. Authentication uses the Open WebUI session token or per-user API
      keys. The base URL is wherever you deploy Open WebUI (commonly http://localhost:3000/api/v1).
    humanURL: https://docs.openwebui.com/getting-started/api-endpoints
    baseURL: http://localhost:3000/api/v1
    tags:
      - Chat
      - Models
      - Prompts
      - RAG
      - Knowledge
      - Tools
    properties:
      - type: Documentation
        url: https://docs.openwebui.com/
      - type: GitHub
        url: https://github.com/open-webui/open-webui
      - type: Reference
        url: https://docs.openwebui.com/getting-started/api-endpoints
common:
  - type: Website
    url: https://openwebui.com/
  - type: DeveloperPortal
    url: https://docs.openwebui.com/
  - type: OpenSource
    url: https://github.com/open-webui/open-webui
  - type: Plans
    url: plans/open-webui-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/open-webui-rate-limits.yml
  - type: FinOps
    url: finops/open-webui-finops.yml
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com