# Open WebUI

**Canonical:** https://apis.io/providers/open-webui/  
**Website:** https://openwebui.com/  
**APIs profiled:** 4

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.

## Kin Score — 25.8 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 25.8).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 44.9 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 13.2 |
| Access Clarity | 13.2 |

## Agent readiness — 19.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: high).

## APIs (4)

- **Open WebUI API** — 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, k...
- **Open WebUI Anthropic API** — The Anthropic API from Open WebUI — 1 operation(s) for anthropic.
- **Open WebUI Chat API** — The Chat API from Open WebUI — 1 operation(s) for chat.
- **Open WebUI Ollama API** — The Ollama API from Open WebUI — 3 operation(s) for ollama.

## Agentic access (1)

- **Open Webui Agentic Access** — 5 operations · 4 acting

## Security (2)

- **Open Webui Authentication** — http · 1 scheme
- **Open Webui Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Open Webui Plans Pricing**

## Tags

LLM, Open-Source, Self-Hosted, Ollama, Chat UI, RAG

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/open-webui/). Scores are computed from the provider's own public artifacts under a published rubric.