TL;DR: pick Trello for familiar cards, checklists and Planner; pick Kelvia when agents need their own identity, comments, worklogs, stages and tighter board access.
I built Kelvia, so yes, I have a horse in this race. It is a small, stubborn horse maintained by one founder. The facts below are checked against Trello's current docs as of August 2026.
What is the short verdict on Kelvia vs Trello MCP?
If your team has five years of Trello boards and everybody knows where things live, keep Trello. Nobody gets a medal for moving 4,000 cards because a new landing page used the phrase "agent-native."
Try Kelvia when the agent itself should be visible: its own name, selected boards, a role, an expiring key, comments and worklogs. Trello lets an assistant use your workspace. Kelvia is trying to make the agent look more like a separate worker inside it.
Does Trello have an official MCP server now?
Yes. Any comparison claiming otherwise is stale. The official Trello MCP guide documents the endpoint https://mcp.trello.com/v1, OAuth 2.0, workspace-scoped authorization and support for major MCP clients.
The current release covers workspaces, boards, lists, cards, checklists, search, Inbox and Planner. Trello explicitly lists comments, activity history, attachments, custom fields, broader labels and member management as coming later. This gap is the useful part of the comparison, not the existence of the server.
How do Kelvia MCP and Trello MCP compare?
| Decision point | Kelvia MCP | Trello MCP |
|---|---|---|
| Best fit | Agent-visible execution on compact team boards | Existing Trello workflows and familiar card organization |
| Current objects | Boards, tasks, comments, worklogs, stages, members, invitations, tags, day plan | Workspaces, boards, lists, cards, checklists, search, Inbox, Planner |
| Comments through MCP | Read, create, update and delete | Listed as coming soon in current docs |
| Time tracking | Native task worklogs | No native MCP worklog surface documented |
| Agent identity | Dedicated identity, role, scopes, expiry and attribution | Acts within the authorizing user's Trello permissions |
| Destructive writes | Available only with matching role and delete scope | Permanent delete operations are not supported |
| Personal planning | Recurring and one-off time blocks in a day plan | Planner can read calendar events and create focus time |
| Server source | Open source under MIT | Vendor-hosted official service |
When should you pick Trello MCP?
When to pick: your team already lives in Trello, checklists matter or you want Inbox and Planner. Familiar software is underrated. People already know which list is secretly the graveyard.
Avoid if: you need MCP comments today, agent-authored time logs or a separate agent identity with its own expiring key.
Cost: Trello says MCP works on all plans. Creating Planner focus time requires Premium or Enterprise, so check before building your whole workflow around it.
Trello does not expose permanent deletion through MCP. That is sensible. An AI agent should not be able to Marie Kondo your entire workspace because the prompt said "clean this up."
When should you pick Kelvia MCP?
When to pick: agents should have their own name, permissions, comments and worklogs, and should only touch selected boards.
Avoid if: checklists, Power-Ups or years of Trello history run the business. MCP alone is not a reason to move a healthy system. Please do not create migration pain just to make my signup graph look nicer.
Cost: you can try Kelvia free. Check the current limits before inviting the entire team and every bot with an API key.
Kelvia covers tasks, stages, comments, worklogs and daily planning. Toolsets let you show an agent only the groups it needs, which keeps context focused and reduces ambiguous actions.
How do access controls differ?
Trello asks the user to authorize one workspace per connection at launch. The assistant cannot exceed that user's Trello permissions, access can be revoked and enterprise admins can control MCP read and write access. It is simple and aligned with the existing account.
Kelvia supports that same convenient OAuth path, then adds agent keys for non-human workers. The agent belongs to chosen boards with a board role; the key adds granular scopes and an expiry. Effective permission is the intersection. This is more setup, but it answers a different question: "what may this agent do?" rather than "what may I do?"
How should you test Trello and Kelvia before choosing?
Do not watch another product tour. Give both tools the same annoying real bug. Ask the agent to find the board, update the task, leave the result and put it into review from Cursor, Claude Code or Codex.
In Trello, test cards, lists, labels, checklists, Inbox and Planner. If that covers the job, great. Keep the familiar thing and go home early.
In Kelvia, create a separate agent, lock it to one board, post a comment, add a worklog and move the task into a stage. Then inspect the activity as a human. If you do not care who did what, Trello's head start is a very strong argument. If you do care, that is Kelvia's reason to exist.
How does connection setup compare?
Both use hosted URLs and browser OAuth. In Cursor, either server fits into mcp.json:
{
"mcpServers": {
"kelvia": { "url": "https://mcp.kelvia.app/mcp" },
"trello": { "url": "https://mcp.trello.com/v1" }
}
}Connect only the one needed for a task; two overlapping board tools make ambiguous prompts harder to predict. For Kelvia commands and permission details, read the MCP documentation.
FAQ
Does Trello have an official MCP server?
Yes. It is an official OAuth service at https://mcp.trello.com/v1.
Does Trello MCP work on the free plan?
Yes, according to Trello. Creating Planner focus time requires Premium or Enterprise.
Which MCP supports task comments today?
Kelvia does. Trello currently lists comments among the capabilities coming later.
Which is better for a dedicated AI agent?
Kelvia has the clearer model for a distinct agent identity, narrower access and attributed worklogs. Trello is stronger when the assistant should operate an existing card-and-checklist system.
Test the smaller workflow first
Try Kelvia with one real task
Open the board before creating an account, then decide whether the agent handoff is worth switching for.
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