DaySurface

An MCP server for Gmail - triage a ranked inbox, draft replies in a real composer, and fill and sign PDF attachments from any MCP client.

Triage, draft, sign - without leaving chat. DaySurface puts a ranked inbox and a real email composer inside Claude, ChatGPT, or whichever agent you use. Your agent triages and writes; you edit and send.

It connects over streamable HTTP, so there is nothing to install - you add a URL to your client and grant Gmail access once.

Quick Start

Connect your client and run your first triage in under a minute.

What it does

Ranked inbox triage

Rank recent threads by what needs attention, then work the list. Ranking is deterministic code, not a model.

Drafts you edit, not approve

Replies land in a real Gmail draft in an interactive composer. Your agent writes it; you press send.

Fill and sign PDFs in-thread

Fill a PDF attachment's form fields and hand it back for signing - a step only you can complete.

Push notifications

Subscribe an HTTPS endpoint to signed events when new mail arrives.

34 tools in total, all through the official Gmail API. See the full tool reference.

Connect it

MCP Server

Add the server to Claude, ChatGPT, Cursor, VS Code, Goose, or any MCP client.

REST API

Call the same tools as authenticated HTTP endpoints from your own code.

CLI

Operate a self-hosted deployment from your terminal with the daysurface binary.

Every tool is one pure function in a shared registry exposed over all three transports, so behavior never drifts between them.

Run it yourself

Deployment

Self-host the full server on your own infrastructure with your own Google OAuth credentials.

Privacy

Your email is never sent to an AI model by us. DaySurface runs no LLM inference on Gmail content, and the inbox ranking is deterministic code. Mail goes only to the AI client you connected, under that client's own terms. Access uses Google's gmail.modify scope - it can read, label, draft, and send, but it cannot delete your mail permanently.

Licensing & pricing

DaySurface is open source under the MIT license - free to use, modify, and self-host forever, with no setup fee and no license cost.

If you would rather not run it yourself, there are paid managed tiers, and governance features (SSO, audit logs) are sold as an add-on you attach when you need them. Tiers and current prices live on the pricing page, with a machine-readable manifest at /pricing.md for agents comparing options.