Agent context
The context layer for your AI agents
Claude Code, Codex, Cursor and Gemini CLI are good at the task and blind to your situation. Cachejay keeps track of your screen, calls, projects and to-dos, and gives agents that context over MCP when they ask.
› continue where we left off on the billing service ⎿ cachejay · project_brief Yesterday in Codex you moved invoices to the new Stripe API. The webhook test still fails (signature mismatch). On the 3pm call, Priya asked for proration on mid-month upgrades. Starting with the webhook: the test uses the live secret.
What your agents get
What you saw
Text from your apps and a small screenshot about once a minute, so “the error I just saw” means something.
What was said
Calls transcribed on your Mac, no bot, with notes, decisions and action items.
Where you left off
A page per project, with the latest agent sessions, in any agent.
What’s still open
A to-do list built from calls and from what people ask you for.
Other agents’ sessions
What you asked and decided in Claude Code and Codex, so the next agent doesn’t start cold.
Your files
Found through Spotlight by name or contents, then opened with the agent’s own tools.
The tools agents call
Agents see these as MCP tools and call them when your request needs them. Nothing is pasted into every prompt.
| Tool | What it returns |
|---|---|
what_was_i_doing | The last N minutes: what’s on screen, agent sessions, calls |
project_brief | Where you left off on a project: recent agent sessions, call notes, pages and files |
search_memory | Search what you saw, said on calls, and discussed with Claude Code and Codex |
current_screen | The text in your frontmost window right now |
screen_at | A screenshot from a moment today, to look at a page, chart or error |
recent_activity | A timeline of apps, windows and text from the last N minutes |
list_meetings · get_meeting | Your recorded calls and their full transcripts |
todos · update_todo | Your to-do list, from calls and requests, and changes to it |
find_files | Files on your Mac by name or contents, through Spotlight |
time_report | Hours by project and by app |
Connect an agent
- Install Cachejay and sign in. It starts keeping track right away.
- In the menu bar, choose Connect AI Apps and pick Claude Code, Claude Desktop, Cursor, Codex, Gemini CLI, Windsurf, VS Code or Zed. The ones you have installed are listed.
- For ChatGPT or Claude on the web or your phone, add a custom connector with the URL
https://cachejay.com/mcpand sign in with your Cachejay email. - Ask your agent “what was I just doing?”.
Per agent: Claude · Codex · Cursor · ChatGPT. The why and how: context engineering for AI agents.
Questions
What is agent context?
Everything an AI agent needs to know about your situation to do the task well: what you were doing, what was decided, what you saw, and what’s still open. Most of it lives outside the chat, which is why agents ask you for it.
Which agents can use Cachejay?
Claude Code, Claude Desktop, Cursor, Codex, Gemini CLI, Windsurf, VS Code (Copilot agent mode) and Zed connect over MCP in one click from the menu bar. ChatGPT and Claude on the web or your phone connect to https://cachejay.com/mcp as a custom connector.
Is this the same as an agent’s own memory?
No. An agent’s memory is what you told that agent. Cachejay is what happened everywhere else: other apps, calls, and sessions in other agents. Both agents read the same Cachejay, so Codex knows what you did in Claude Code.
Does the agent see everything?
No. It sees what it asks for, when it asks, through tools like search_memory or project_brief. That answer becomes part of the conversation.
Can text on a web page take over my agent?
Everything Cachejay returns is marked untrusted, so agents treat it as text to read, not instructions to follow.
What does Cachejay never read?
Password managers, Keychain Access, private and incognito windows, password fields, and any app you exclude. Passwords and keys are masked before anything leaves your Mac.
Stop explaining your day to ChatGPT
Install it, connect the apps you use, and get on with your work. Free for 14 days, no card.