Teach Tallgeese something new.
Package what you know, a favourite workflow, a service you rely on, a handy little tool or a whole mini-app, and share it with people who use Tallgeese on their own computers.
Pick your starting point
You don't need to be a professional developer. Start at the level that matches what you can do today. Each one builds on the one before.
Make a skill
Write down how a job should be done, in plain language: your template, your checklist, your house style. Tallgeese follows your instructions whenever someone asks for that job.
Connect a service
If a service offers an MCP address, point Tallgeese at it. People sign in once, and Tallgeese can then work inside that service for them.
Build a tool
Give Tallgeese a new ability: read a file format, talk to an app on the computer, call an API. Your tool runs in a safe sandbox and can only reach what you declare.
Create a specialist
Bundle a tool, an assistant with one focused job, and your own page in the sidebar. The Financial Advisor is built this way.
Your first skill in five steps
A skill is a folder with a text file in it. That's the whole thing.
- Copy the sample projectIt comes with the Developer Kit and already passes every check.
- Write your instructionsA short
SKILL.md: when to use it, then the steps. - Describe it to peopleA name and a few friendly lines, in five languages.
- Check it
tgs-market check .lists everything that needs fixing. - Try it in the app
tgs-market devserves it to Tallgeese on your own computer.
---
name: meeting-minutes
description: "Write meeting minutes from rough
notes. Use when someone gives notes or a
transcript and wants minutes or a follow-up."
---
# Writing minutes
Work only from the notes you are given.
If something is missing, ask. Never guess.
1. **Meeting**: what it was about, who was there
2. **Decided**: one sentence per decision
3. **To do**: who does what, by when
4. **Open**: questions nobody answeredEverything you need
Three short documents. Read the guide once, keep the reference open while you build, and copy from the examples.
Developer guide
How the Marketplace works, what to build first, and friendly walkthroughs from a first skill to a full mini-app, plus a checklist before you share it.
Read the guide →SDK & API reference
Every file, field, setting and limit in one searchable place, including the tool interface, the page API and the command-line kit.
Open the reference →Reference apps
See how the Financial Advisor, Python add-on, web search, document reader, charts and Zotero items are made, and borrow their ideas.
Explore the examples →Built so people can say yes
Tallgeese runs on the person's own computer. The Marketplace is designed so that adding your item feels safe, simple and honest.
Private by default
Items work on the person's own computer and keep their data there. You say up front exactly where an item connects, and people see it in plain words before they get it.
One click, one question
Everything an item includes switches on together, and the person is asked once, in a short sentence for each thing you declared.
Sandboxed and signed
Tools run in a sandbox with no access to files or other networks. Every release is signed and checked, and a published version never changes.
Written for everyone
Items are described in English, Simplified and Traditional Chinese, Japanese and Korean, in plain language that doesn't assume technical knowledge.
Have an idea? Tell us.
We'd love to hear what you want to build, and we'll help you get it listed. Send us a note at developers@tallgeese.ai.