# Your tracked days. Patterns in plain words.

Source: https://corespeed.io/integrations/exist

Connect Exist to Claude Code, Codex, Cursor or any MCP agent through CoreSpeed. Your agent reads the attributes Exist tracks for you, such as sleep, steps, mood and productive time, with their history, weekly averages, insights and correlations. It signs in with your own Exist account, and logging a value to a manual attribute is a separate call.

## Set up an agent

Give your agent this line: `set up https://corespeed.io/SKILL.md (read it raw, e.g. with curl)`

It fetches the skill at https://corespeed.io/SKILL.md, adds the CoreSpeed MCP server, signs you in (or up), and keeps the skill for next time. Connect Exist after setup. Access follows the connected account and its permissions. Create an account: https://app.corespeed.io/sign-up

## Ask how you slept. See what changed it

Your agent reads your recent values, weekly averages and the correlations Exist found. You get the patterns, not a spreadsheet.

You ask your agent: "Look at my Exist data for the last two weeks. Tell me how my sleep and mood changed and which correlations Exist found. Do not log anything."

It calls CoreSpeed:

- `exist__list_attributes_with_values`: ok, 410 ms
- `exist__list_averages`: ok, 290 ms
- `exist__list_correlations`: ok, 350 ms

It reads from: Exist.

### Your two weeks: Less sleep, steady mood.

Sleep fell by 20 minutes a night. Mood held, and was higher on days with more steps.

**Changed**

- Sleep averaged 7h 12m, down from 7h 32m.
- Steps rose to 8,430 a day.

**Exist found**

- More steps, better mood.
- Later bedtimes, less productive time the next day.

_Illustrative example · Fictional data · Nothing logged_

All connectors: https://corespeed.io/docs/connectors

## From your data to what helps

Requests you can make once Exist is connected. The data is fictional.

### See how the week went

Last 7 days · Averages

- Sleep: 7h 12m
- Mood: 3.8 of 5
- Read-only

### Find what moves your mood

Correlations · Found by Exist

- Strongest: Steps and mood
- Period: Last week
- From Exist's own analysis

### Log a value

A manual attribute · One write

- Attribute: Coffee
- Today: Plus one
- A separate tool call

## Keep your agent. Bring your work

One CoreSpeed account, across compatible agents.

1. **Set up CoreSpeed**: Give your agent the setup line. It adds CoreSpeed and signs you in.
2. **Connect Exist**: Authorize the account and the content you need.
3. **Start with one task**: Ask for a summary, a brief, or a draft. Review the answer.

Setup guides: Claude Code https://corespeed.io/docs/mcp#claude-code · Codex https://corespeed.io/docs/mcp#codex · Cursor https://corespeed.io/docs/mcp#cursor

## Questions

### Which Exist data can the agent read?

The attributes your account tracks and your consent covers, such as activity, sleep, mood and productivity, with averages, insights and correlations.

### Can the agent write to Exist?

Only to manual and custom attributes the connection takes ownership of. Values from other services, like a sleep tracker, stay read-only.

### Do I have to switch agents?

No. CoreSpeed adds tools to the agent you already use: Claude Code, Codex, Cursor, or another MCP client. Each one signs in once.

### Can my agent access every account in our organization?

No. Access follows your CoreSpeed identity, each connection's visibility, and the app's own permissions. Personal connections stay private.

### Does this work without connecting an account?

No. Connect the app's account first; your CoreSpeed workspace shows what each app needs. The examples on this page use fictional data. All connectors: https://corespeed.io/docs/connectors

Every tool and price: https://corespeed.io/catalog/exist

## Related pages

- [App integrations for Claude Code, Codex, and Cursor](https://corespeed.io/integrations): Connect Gmail, Slack, Notion, GitHub, and more to Claude Code, Codex, Cursor, and other MCP clients. Manage private and shared connections.
- [PostHog for Claude Code, Codex, and Cursor](https://corespeed.io/integrations/posthog): Read PostHog insights and dashboards from your agent. Get the numbers behind a question, and mark releases on your charts.

## Sources

- Connectors: https://corespeed.io/docs/connectors
- Exist developer documentation: https://developer.exist.io/
- Attributes: https://developer.exist.io/reference/attributes/

Reviewed 2026-11-10.

## Links

- Product overview: https://corespeed.io/ (Markdown: https://corespeed.io/index.md)
- All integrations: https://corespeed.io/integrations (Markdown: https://corespeed.io/integrations.md)
- Documentation: https://corespeed.io/docs
- Pricing: https://corespeed.io/pricing (Markdown: https://corespeed.io/pricing.md)