Act on this, mostly signal

Cohestry, a free Apple second brain, exposes notes to coding agents via MCP

What to do

Try Cohestry on a Mac if you want your notes available to coding agents.

Why

The Mac app bridges notes to agents over MCP with key redaction. It was built with Opus 5.5 and GPT Astra.

What the research found

Cohestry is a free Apple-native second brain app whose Mac app exposes notes to coding agents via an MCP bridge with key redaction, built with Opus 5.5 and GPT Astra.

Claims and how well the evidence supports them

Cohestry exposes its knowledge base to agents through an MCP bridge 99%
The MCP bridge redacts API keys and p8 security keys 98%
Cohestry is free to download with paid features 99%
Opus 5.5 and GPT Astra were used to build the app 99%

Evidence

reddit.com https://reddit.com/r/ClaudeAI/comments/1xdncol/every_wanted_a_solid_context_layer_for_all_your
apps.apple.com https://apps.apple.com/us/app/cohestry-second-brain/id6811573132

Actionability rated low.