Agent-Native Calendar
by BuilderIO
Agent-Native Google Calendar - manage events, sync, and public booking
Runs in the cloud★ 7,620MITUpdated 2 months ago
Install
trello-mcp
Overview
Description from the maker (original English)
Local Trello MCP with compact responses, workspace allowlists and read-only opt-in.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiNot measured yet★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs on your computer
- Transport: stdio
- Category: Docs, sheets & office work
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on your computer with your user’s permissions (files, network, apps).
- The registry lists no key to fill in.
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Download the maker’s .mcpb file
The link goes to the maker’s own file; we do not host or repackage it. Open the file and Claude Desktop installs it.
Run this in your terminal
Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
Runs on your computer; the tool list appears in your AI app after you install it.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account avhn, which owns the repo
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- – Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
- – Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
- … Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints
Compared with others in Docs, sheets & office worki
- More stars than 0% of the other 3545 servers in this category
- Published to the registry more recently than 72% of the other 3545 servers in this category
- Basic checks equal to or better than 100% of the other 3545 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is trello-mcp safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).
Is it still maintained?
The GitHub repo last changed –, and the latest version (1.0.6) reached the registry 12 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need MCPB on your computer.
What can I use instead?
In the same category: Agent-Native Calendar, Excel MCP Server, MCP Server for Excel
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
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by haris-musa
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Install
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
trello-mcp
Local Trello MCP server in Go. 48 tools, compact responses, guest boards.
16 cards in one list. Response text, characters. Lower is smaller.
77% less response text than the official server for this call (summary mode). Measured 2026-10-17 on one private work board with 144 cards; characters, not tokens. Full mode: 9,112 (69% fewer). For one card's details the official server returned less: 2,662 vs 2,825. All results and method.
Install
curl -fsSL https://raw.githubusercontent.com/avhn/trello-mcp/main/install.sh | shWindows: irm https://raw.githubusercontent.com/avhn/trello-mcp/main/install.ps1 | iex. Checksum-verified.
Or give your agent:
Set up trello-mcp by following https://raw.githubusercontent.com/avhn/trello-mcp/main/docs/setup.md; ask me to run its printed absolute-path auth command myself in a private terminal, then reconnect. Never capture authentication output.Then: run the printed auth command yourself in a private terminal, register, reconnect. Clients and Claude Desktop: docs/setup.md.
Measured comparison
Measured response text. Chars; independent zero-based row scales.
Tool definitions. Claude tokens from /context, one session. Node not measured. Lower is smaller.
Claude Code /context in one session; rows over 1k display-rounded to 0.1k. Node could not be loaded into /context. Separately, tools/list: 20,583 vs 33,766 characters (39% fewer vs Node), not tokens.
| Call | trello-mcp | Official | Node 1.8.1 | vs Official | vs Node |
|---|---|---|---|---|---|
| Boards list, per returned board (characters/board) | 150 | 622 | 8,682 | 76% fewer | 98% fewer |
| 16 cards, summary (characters) | 6,754 | 29,141 | 45,335 | 77% fewer | 85% fewer |
| 16 cards, full (characters) | 9,112 | 29,141 | 45,335 | 69% fewer | 80% fewer |
| 50 board actions (characters) | 15,494 | 55,331 | 71,008 | 72% fewer | 78% fewer |
| One card's details (characters) | 2,825 | 2,662 | 16,350 | 6% more | 83% fewer |
| Comments on that card, 2 comments (characters) | 586 | 1,089 | 3,232 | 46% fewer | 82% fewer |
| Tool definitions (Claude tokens) | 8,107 (48 tools) | 19,664 (15 tools) | Not measured | 59% fewer | n/a |
One board, one day, one account. trello-mcp at commit cb40466 (v1.0.3); Atlassian hosted https://mcp.trello.com/v1 over OAuth, results captured verbatim from a headless Claude Code session; @delorenj/mcp-server-trello 1.8.1 via npx. Board list figures are characters per returned board over different sets (16 / 15 / 29; Node includes 13 closed boards; the extra trello-mcp board is a guest board in another organization). Card details and comments use one card with two comments. The board is private, so others cannot rerun on the same data. Official results reflect its hosted version on that date. Tool definitions are Claude tokens from /context; chars/4 would give about 5,146 for trello-mcp instead of 8,107.
Aggregate data. Method and harness. Percent fewer = round(100 * (1 - ours/theirs)); per-board values are rounded totals/count.
I use Trello with AI assistants a lot, so I built trello-mcp to make it lighter and easier to use.
A thought: with AI agents, managing context may be one of the main optimizations we need to make now. Every tool definition and response a model reads takes space from the actual task, and as context grows, output quality tends to drop.
Features checked 2026-10-17.
| Feature | trello-mcp | Official | Node 1.8.1 |
|---|---|---|---|
| Runs | Local binary | Hosted, OAuth | Local, Node or Bun |
| Guest boards | Yes | Not reached in the owner's check, 2026-10-16 | Yes |
| Delete comments | Yes | No: list, add, edit | Yes |
| Create, update, delete labels | Yes | No: list, attach, detach | Yes |
| Attachments | Upload and download to disk, opt-in, Unix | Listing only | Any local path upload, inline base64 download |
| Per-object workspace allowlist | Yes | Per-workspace OAuth consent | Listing and some workspace operations |
| Server-side read-only mode | Yes | n/a (hosted) | Not documented |
Choose official for zero install, web and mobile, Inbox, Planner or keyword search.
Read-oriented profile
Ten read tools (placement; board_use sets the local default board):
TRELLO_TOOLS=workspace_find,board_find,board_use,list_find,card_find,card_get,comment_find,checklist_get,checklist_items,server_healthSynthetic reference
Synthetic fixtures versus raw Trello JSON for the same objects, regenerated by go test ./internal/bench -update.
| Scenario | Raw Trello JSON | this server | reduction |
|---|---|---|---|
| 20 boards | ~2166 | ~433 | 80.0% |
| 30 cards in a list | ~9266 | ~2968 | 68.0% |
| 20 comments | ~6739 | ~4311 | 36.0% |
| 50 board actions | ~11910 | ~4248 | 64.3% |
| 22 card actions | ~4888 | ~1368 | 72.0% |
| Card with 20 comments | ~7404 | ~4465 | 39.7% |
Synthetic raw pretty JSON is a reproducible reference, not measured output from another MCP server. Tokens use chars/4.
| Startup cost | Default (48 tools) | Read-oriented discovery (10 tools) |
|---|---|---|
| tools/list | 20694 chars (~5174 tokens) | 4400 chars (~1100 tokens) |
| Initialize instructions | 140 chars (~35 tokens) | 141 chars (~35 tokens) |
| Initialize result (including instructions) | 304 chars (~76 tokens) | 305 chars (~76 tokens) |
| Independent response | Characters | Tokens (chars/4) |
|---|---|---|
| card_find summary (30 cards) | 11873 | ~2968 |
| card_find full (30 cards) | 15023 | ~3756 |
| board_activity all (50 actions) | 16994 | ~4248 |
| board_activity commentCard | 5835 | ~1459 |
| board_activity updateCard | 5476 | ~1369 |
Docs
Setup · Configuration and security · Tools
License
GPL-3.0-or-later, copyright Mert Dede (MIT up to v0.5.0). Independent Go implementation of the delorenj/mcp-server-trello 1.8.1 (MIT) tool surface, not a runtime dependency. Trello is a trademark of Atlassian. trello-mcp is an independent project, not affiliated with or endorsed by Atlassian.