# WhyVault (whyvault.io)

Hosts a markdown knowledge vault that Claude, ChatGPT and Cursor read and write through a built-in MCP server.

- Atlas card: https://inite.ai/en/atlas/whyvault.io
- Site: https://whyvault.io
- For: People who use Claude, ChatGPT or Cursor and want one shared set of notes across all of them.
- Categories: knowledge
- Use 0/100 · alive 100/100

## Used for

- Share project context between Claude, ChatGPT and Cursor
- Link client, project and personal notes across topic folders
- Review and undo edits that AI agents make to notes

## Price

- from 8.25 EUR/month, free plan (read 2026-10-26 on https://whyvault.io/#pricing)

## For developers

- MCP server: io.whyvault/vault (namespace; auth on 2026-10-26)
- MCP server card: https://whyvault.io/.well-known/mcp.json
- Read 2026-10-26

## MCP server, measured daily

Server: https://mcp.whyvault.io, checked every day since 2026-10-26 (3 checks).

- Answered: measuring, 3 daily checks so far
- Median first answer: 889 ms
- Sign-in: OAuth (the client signs the user in)
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: gdpr
- Training on your data: yes (https://whyvault.io/privacy)
- Read 2026-10-26

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Source: INITE Atlas, https://inite.ai/en/atlas/whyvault.io. JSON: https://inite.ai/api/atlas/whyvault.io. MCP: https://inite.ai/api/mcp (atlas_lookup).