Trache

Are you sick of paying premium token prices to load an entire Trello board just to rename one card?

Has your AI ever pulled half of Trello into context, chewed 27% of your weekly tokens, changed exactly one line of text, only to hit you with: "Done! If you need anything else changed, just say the word."

Do you enjoy round-tripping through MCP/API calls, loading giant JSON blobs, and paying for the privilege of doing something your machine could have handled locally in the first place?

Good news. There is now a worse-named but better-behaved solution.

Trache is a local-first Trello cache, built for AI agents.
Trache is what happens when Trello and Cache love each other very much ...

It pulls your board once, stores it locally, and lets your agent work on cards like normal files:

• read a card = local file read
• edit a card = local file write
• review changes = local diff
• hit Trello only when you actually mean to

In other words: stop making your AI re-download Trello’s life story every time it wants to edit one card.

Trache gives you Git-style pull / push semantics for Trello, with targeted operations, cheap local discovery, and explicit sync only when you actually want it. Reading a card becomes a file read. Editing a card becomes a file write. Nothing hits the network until you say so.

Using an AI agent? Run trache agents after setup for agent-specific instructions, or trache agents --reference for a compact command cheat-sheet.

Install

git clone <repo-url>
cd trache
pip install -e .          # editable install
# or
pip install .             # standard install

Requires Python 3.10+. Uses hatchling as the build backend — if you're in a sandboxed or offline environment without hatchling, install it first (pip install hatchling) or use pip install --no-build-isolation .

Optional dependencies:

pip install -e ".[dev]"   # pytest, ruff, coverage
pip install -e ".[oauth]" # OAuth support (authlib)

Prerequisites

You need a Trello API key and token:

1. Get your API key from https://trello.com/power-ups/admin

2. Generate a token by visiting (substitute your API key):

   https://trello.com/1/authorize?expiration=never&name=trache&scope=read,write&response_type=token&key=YOUR_API_KEY

   Or run trache init --auth to print the URL with your key substituted.

3. Set environment variables:

export TRELLO_API_KEY=your_key
export TRELLO_TOKEN=your_token

Quick Start

UID6 — the last 6 characters of a Trello card ID (e.g. B1A403). This is how you reference cards in every command. Case-insensitive input, displayed uppercase.

# Initialise cache for a board
trache init --board-id <board_id>
# or by URL:
trache init --board-url https://trello.com/b/<board_id>/board-name

# Pull board data
trache pull

# Browse locally (no API calls)
trache card list
trache card show <uid6>

# Edit locally
trache card edit-title <uid6> "New Title"
trache card add-label <uid6> "Bug"

# Review changes
trache status
trache diff

# Push to Trello
trache push --dry-run     # preview first
trache push               # push for real

Core Workflow

pull → discover → read → mutate → status/diff → push

1. trache pull — fetch board data from Trello into local cache
2. trache card list — discover cards (reads local SQLite cache, no API call)
3. trache card show <uid6> — read a single card (one local query)
4. Mutate locally — edit title, description, labels, checklists, move, create, archive
5. trache status / trache diff — review what changed
6. trache push — push only the changed objects to Trello

Things to Know

A few behaviours that aren't obvious from the happy path:

• List names aren't unique. If your board has duplicate list names, --list "Name" and card create "Name" ... will silently pick one. Prefer list IDs or ensure names are unique.
• Comment commands hit the API immediately. Unlike every other mutation, comment add, comment edit, and comment delete are not local-first — they write to Trello the moment you run them.
• Labels are validated against the board. add-label checks the label name against your board's labels (pulled into labels.json). Use trache label list to see what's available, or trache label create to add new ones.
• New cards get temporary IDs. Locally-created cards are assigned a temp UID6 (containing T~) until pushed. After push, trache reconciles the temp ID to the real Trello ID and reports the mapping.
• Push can partially succeed. If you push multiple cards and some fail (e.g. an invalid label), the successful ones still land. Check trache status after push to see what's still dirty.
• Prefer UID6 over names once you've resolved a card. UID6 is unambiguous; names and list names can collide.
• For agent-specific guidance, run trache agents --reference for the compact command surface.

Command Reference

Top-Level Commands

Command	Description
trache init	Initialise cache for a board (--board-id or --board-url, --auth for token URL, --new to create)
trache pull	Pull from Trello (--card <id>, --list <name>, --force)
trache push	Push local changes to Trello (--card <id>, --dry-run)
trache sync	Push then pull (--dry-run, --card <id>)
trache stale	Check if the board has remote changes since last pull (one API call)
trache status	Show dirty state summary
trache diff	Show detailed clean vs working diff
trache batch run	Execute multiple commands from stdin (JSON output)
trache agents	Print agent setup instructions (--reference for command cheat-sheet)
trache version	Show installed version

Card Commands

Command	Description
trache card list	List cards from local index (--list <name> to filter)
trache card show <id>	Show a single card
trache card edit-title <id> <title>	Edit card title
trache card edit-desc <id> <desc>	Edit card description
trache card move <id> <list>	Move card to a different list
trache card create <list> <title>	Create a new card (--desc for description)
trache card archive <id>	Archive a card
trache card add-label <id> <label>	Add a label (must match a board label)
trache card remove-label <id> <label>	Remove a label from a card

All card commands accept Card ID or UID6 as the identifier.

Board Commands

Command	Description
trache board list	List all configured boards
trache board switch <alias>	Switch the active board
trache board offboard <alias>	Remove a board's local cache (--yes, --archive, --force)

Use --board <alias> (or -B) on any command to target a specific board without switching.

Checklist Commands

Command	Description
trache checklist show <card>	Show checklists for a card
trache checklist create <card> <name>	Create a new checklist
trache checklist check <card> <item_id>	Mark item complete
trache checklist uncheck <card> <item_id>	Mark item incomplete
trache checklist add-item <card> <checklist_name> <text>	Add item to checklist by name
trache checklist remove-item <card> <item_id>	Remove a checklist item

All checklist mutations are local-first — push to sync.

Comment Commands (API-direct)

Command	Description
trache comment add <card> <text>	Add a comment
trache comment edit <card> <comment_id> <text>	Edit a comment
trache comment delete <card> <comment_id>	Delete a comment
trache comment list <card>	List comments

All comment commands hit the Trello API immediately. They bypass the local-first model entirely — there is no undo via trache status or trache diff.

Label Commands

Command	Description
trache label list	List board labels (from local cache)
trache label create <name>	Create a new board label (--color)
trache label delete <name>	Delete a board label

List Commands

Command	Description
trache list show	Show all board lists
trache list create <name>	Create a new list (--pos top|bottom)
trache list rename <old> <new>	Rename a list
trache list archive <name>	Archive a list (--yes required)

List commands are API-direct (like comments).

Local-First Model

Trache maintains two copies of your board data in a SQLite database:

• Clean — baseline from last pull. Never edited directly.
• Working — your editable copy. All local mutations happen here.

trache status and trache diff compare clean vs working to detect changes. trache push sends working changes to Trello and re-pulls each pushed card to reconcile.

Dirty Pull Guard

trache pull refuses to overwrite your working copy if you have unpushed local changes:

trache pull           # → refuses if dirty
trache pull --force   # → overwrites working copy with fresh pull

Push vs Sync

• trache push — pushes local changes to Trello. Re-pulls each pushed card to reconcile.
• trache sync — pushes first, then does a full board pull. If push has errors, the full pull is skipped to preserve local state for failed cards.

Targeted Pull

Prefer targeted pulls over full-board pulls when you only need one card or list:

trache pull --card <uid6>     # refresh one card
trache pull --list "To Do"    # refresh one list

How It Works

A few implementation details, if you're curious:

Identifier Block

Each card's Trello description is prepended with a metadata block (card name, dates, UID6) on push. This block is stripped on pull and never stored locally — it exists only on the Trello side so that humans browsing the board see version metadata alongside the description.

Modified Date vs Last Activity

• content_modified_at — Trache-tracked. Updates only when card content changes (title, description, list, labels, due, closed, checklists).
• last_activity — Trello's dateLastActivity. Updates on any activity including comments, member changes, etc.

On re-pull, Trache preserves content_modified_at if content hasn't changed, even if dateLastActivity bumped due to non-content activity.

File Layout

.trache/
  boards/
    <alias>/
      config.json       # Board ID, auth env var names
      cache.db           # SQLite WAL store (cards, checklists, labels, lists)
      state.json         # Last pull timestamp, board_last_activity
  active                 # Current active board alias

Known Limitations

• No concurrent-agent conflict resolution — if two agents push changes to the same card, last write wins silently. Coordinate externally if sharing a board.
• Duplicate list names are ambiguous — list-name targeting picks one arbitrarily. Rename duplicates or use list IDs.

Development

pip install -e ".[dev]"

# Run tests
make test
# or: python3 -m pytest tests/ -v

# Lint
make lint
# or: ruff check src/ tests/

# Format
make fmt

LLM / Agent Integration

Trache is built for Claude Code and similar AI coding agents.

• trache agents — prints setup instructions for injecting trache into your agent's instruction files
• trache agents --reference — prints a compact command reference designed for agent context windows
• Machine-first output — default output is JSON/TSV for machine consumption; set TRACHE_HUMAN=1 for Rich-formatted human output

License

This project is licensed under the GNU Affero General Public License v3.0 or later (AGPL-3.0-or-later). See LICENSE for the full text.