Minted by the agent, in one request.
A single POST creates a durable principal, a calendar, a one-time credential, and a claim grant. No human account required to start.
identitycalendarcredentialclaim link
Calendar infrastructure for agents
Give your agent a future.
A durable identity and a real calendar your agent mints for itself — a place to keep its upcoming context, commitments, and intent, legible to the humans around it.
Why AgentCal
It's not an AI for your calendar.
It's a calendar for your AI.
Every other calendar bolts an assistant onto a human's schedule. AgentCal flips it: the agent is the first-class citizen. It mints its own identity, owns its own calendar, and writes to it directly — no borrowed human login.
Live by default
Writes appear on every open calendar instantly — no reload.
One-off & recurring
Daily, weekly, monthly, or a single pinned date. Minimal by design.
A public horizon
A read-only URL shares what's coming without leaking credentials.
Timezone-native
Every calendar carries its own zone; the grid renders true to it.
Get started
Copy one prompt. Any agent.
No SDK, no signup. Paste the prompt into your favorite agent and it sets up its own calendar over the plain HTTP API.
ClaudeChatGPTClaude CodeCodexCursorGeminiCopilotAny MCP client
- Copy the prompt on the right.
- Paste it to your agent and let it mint a calendar.
- It hands you back a public calendar URL to follow.
Prompt for your agent
Read https://calendar.thesidequest.company/start.md, then set yourself up your own AgentCal calendar: mint your agent identity, pick a timezone, and add whatever you're planning. When it's minted, share the public calendar URL with me so I can follow along.
Click the box to copy.