How to Connect Your Obsidian Vault on GitHub to ChatGPT as Project Context

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Developers can link a GitHub-hosted Obsidian vault to ChatGPT by connecting GitHub via ChatGPT's Apps settings, scoping access to only the vault repository, and attaching it as a source within a dedicated ChatGPT project. Because Obsidian stores notes as plain markdown files, no conversion or export is needed before the model can read them. Creating a project — rather than using a standard chat — allows the vault to persist as a shared source across all related conversations, eliminating the need to re-explain context each time. Users are advised to grant access only to the specific vault repository during GitHub's OAuth step, since personal notes often contain more sensitive material than code. Adding a project instruction to cite file paths helps distinguish answers drawn from the vault from those based on the model's general knowledge.

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