BYOAIK — Bring Your Own AI Key: a directory of AI tools that run on your own API key.

Copilot for Obsidian

Open-source AI assistant plugin for Obsidian with chat, vault Q&A, and agentic workflows over your notes.

Website Source code

Category:

Writing Tools

Pricing:

Open Source

Open source:

Yes (AGPL-3.0)

Self-hostable:

Yes

Local-first:

Yes

Platforms:

Desktop, Mobile, Self-hosted, Docker

AI providers (bring your own key):

OpenAI, Anthropic, Google Gemini, Cohere, Groq, OpenRouter, Perplexity, Ollama, Custom / OpenAI-compatible

API key storage:

Stored locally on device

Key risk level:

LOW

Trust score:

90/100

Copilot for Obsidian (logancyang/obsidian-copilot) is an open-source community plugin that embeds an AI assistant inside the Obsidian note-taking app. It provides AI chat, vault-wide semantic search and Q&A over your notes, web/YouTube context, and agentic content generation, with a stated philosophy of local data control and no provider lock-in. The free plugin is bring-your-own-key: users paste their own API keys for OpenAI, Anthropic, Google, Cohere, Groq, or OpenRouter, point at any OpenAI-compatible endpoint via a custom Base URL (e.g. Perplexity), or run fully local via Ollama or LM Studio. An optional one-time "Copilot Plus" license adds a built-in (managed) chat model and embeddings for users who do not want to supply their own keys. Licensed AGPL-3.0, ~7.3k GitHub stars, written in TypeScript, actively maintained (latest release v3.3.3, May 2026).

How your API key is handled

Your API key is stored locally on your device. Requests are sent directly to the AI provider. Because it can be self-hosted, your key never has to touch a third-party backend.

Setup

Open settings, paste your provider API key, choose a model, and start — the key stays on your device.