Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add monkilabs/opencastle --skill trello-task-managementgit clone --depth 1 https://github.com/monkilabs/opencastleWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/monkilabs/opencastle/trello-task-management)<a href="https://agentmods.dev/skills/monkilabs/opencastle/trello-task-management"><img src="https://agentmods.dev/badge/skills/monkilabs/opencastle/trello-task-management/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/monkilabs/opencastle/trello-task-management"><img src="https://agentmods.dev/badge/skills/monkilabs/opencastle/trello-task-management.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00040 | $0.00764 |
| Opus 5.5 | $0.00016 | $0.00306 |
| Sonnet 5.5 | $0.00008 | $0.00153 |
| Haiku 4.5 | $0.00004 | $0.00076 |
Grade A, and why
trello-task-management scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 20d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Task Management with Trello
For project-specific board IDs and list IDs, see .opencastle/project/trello-config.md.
MCP Server
| Field | Value |
|---|---|
| Package | @delorenj/mcp-server-trello |
| Type | stdio (spawned via npx -y @delorenj/mcp-server-trello) |
| Auth | API key + token via TRELLO_API_KEY and TRELLO_TOKEN env vars |
Available MCP Tools (quick)
get_boards,get_lists,get_cards_by_list_id,get_card_details— read-only board/list/card toolscreate_card,update_card,add_checklist_to_card,add_comment_to_card— create/update tools (ensure proper auth)
Example Invocations
// trello/create_card
{ "listId": "abc123", "name": "[Feature] Add search", "desc": "Acceptance: returns results within 200ms", "labels": ["feature"] }
// → { "id": "card456", "url": "https://trello.com/c/card456", "name": "[Feature] Add search" }
// trello/update_card — move card to In Progress
{ "cardId": "card456", "listId": "inprogress789" }
// → { "id": "card456", "idList": "inprogress789" }
// trello/add_comment_to_card
{ "cardId": "card456", "text": "Blocked: waiting for API schema approval" }
// → { "id": "comment999", "data": { "text": "Blocked: ..." } }
Discovered Issues (Bug Tickets)
- Check existing cards for the issue.
- If tracked, skip and continue.
- If not tracked:
- For unfixable limitations: add to known issues with severity, evidence, and root cause.
- For fixable bugs: create a Trello card with Name (
[Bug] Short description), List (Backlog), Description (symptoms, repro steps, affected files), and optional Due date if blocking.
Card Naming
Use [Area] Short description format:
[Schema] Add priceRange field to place type
[DB] Add price_range column and migration
[UI] Build PriceRangeFilter component
[API] Add price filter endpoint
[Test] Unit tests for price filter
[Docs] Update data model documentation
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 20d ago Changed · -13 tokens per session d875ea58e611
- 21d ago First seen · 80 lines · 53 tokens per session scan A a75613ca7d91
trello-task-management is a skill published in the GitHub repository monkilabs/opencastle (80 stars, last pushed 4d ago), licensed MIT. It adds 40 tokens to every session and 764 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-04.
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