Calendar Sync & Universal Calendar MCP

Keeper.sh lets you sync your calendars so you prevent double bookings and acts as a universal MCP server that gives your agents access to all your cal…

In plain English

Keeper keeps several calendars in sync so a person does not end up double booked. It also gives AI helpers one shared way to see every calendar at once, instead of connecting each calendar on its own. Users pay a plan that can change with use, or a set of tiers, because scattered calendars cause missed meetings. The AI does most of the syncing and the payment handling. The person running Keeper still checks quality, writes clear instructions, helps users, and talks with people who build AI helpers.

Automation85%

Startup costNot disclosed

Time to first $Not disclosed

Monthly range*$304 MRR

~$304 MRR; $450 verified revenue last 30 days (TrustMRR/Polar, Oct 27, 2026)

DifficultyHard

SourceTrustMRR - Keeper.sh - Calendar syncing, universal API & MCP ↗

Operator: Rida F’kih

Verified

Revenue independently checked: documents reviewed by a publication, or a public dashboard.

TrustMRR Polar-verified (~$304 MRR, $450 last 30 days, ~72 customers) ↗

Not disclosed.

The tool stack

Polar ↗

4% + 40¢ per transaction

Payments / merchant of record

Anthropic API ↗

Pay per token

LLM / agents

Next.js ↗

Free (open source)

Web app framework

Prices are the vendors' published list prices as researched in Oct 2026 and change often — always check the vendor's pricing page.

Step-by-step setup

Ship an API or tool developers and agents call directly.
Great docs, SDKs and MCP/CLI access.
Usage-based or tiered pricing.
Grow via developer communities and integrations.

What's automated vs. the human 15%

The machine does

Core AI generation/analysis
Billing and onboarding

You still do

Product quality and support
Distribution and marketing
Compliance and edge cases

Overview

Keeper.sh lets you sync your calendars so you prevent double bookings and acts as a universal MCP server that gives your agents access to all your calendars in one go.

Operator: Rida F’kih. Category on TrustMRR: Productivity. Founded: 2025-10-31. Website: https://www.keeper.sh/

Estimated split: about 85% of the work automated, 15% human.

Realistic income

TrustMRR (checked Oct 27, 2026) shows about $304 MRR and $450 in Polar-verified revenue over the last 30 days, $2,609 verified over its tracked history. This is one operator’s result, often after months or years of work, and doesn’t predict yours. Check the live listing — numbers change.

Risks

Platform dependency on upstream models/tools.
Support burden from technical users.
Startup cost and time to first dollar are not disclosed.

*Income figures are illustrative ranges based on public pricing and typical outcomes reported by practitioners, not guarantees. Most new online businesses earn little or nothing at first. Not financial, legal or tax advice.

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