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Update Card Details

update_card_details

Modify an existing Trello card's name, description, due date, position, labels, or reminder by card ID or board card number.

Instructions

Update an existing card's details. Name the card by its ID or by its number on a board.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
posNoPosition of the card in the list. Accepts "top", "bottom", or a positive number
nameNoNew name for the card
startNoNew start date for the card (YYYY-MM-DD format, date only)
cardIdNoID of the card to update. Give this or cardNumber
labelsNoNew array of label IDs for the card
boardIdNoBoard the card is on. Needed with cardNumber when there is no active board. With cardId, a card on any other board is refused
dueDateNoNew due date for the card (ISO 8601 format)
cardNumberNoNumber of the card on its board. Give this or cardId
descriptionNoNew description for the card, 2400 characters at most
dueCompleteNoMark the due date as complete (true) or incomplete (false)
dueReminderNoNew due date reminder in minutes before due date (e.g., null to remove reminder, 0 at due time, 1440 one day before)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full behavioral burden. It correctly implies a mutation of an existing card, but does not disclose permissions, partial-update semantics, what happens to unspecified fields, or any side effects.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two short sentences with no filler, and the core action is front-loaded. It is efficient, though for an 11-parameter mutation tool the second sentence mostly duplicates schema detail.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 11 parameters, no annotations, and no output schema, the description is far too thin. It omits permissions, update semantics, partial field behavior, and return information for a complex mutation tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so all 11 parameters are already documented. The description only restates the cardId/cardNumber identification choice, adding little beyond what the schema already says.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description gives a clear verb and resource: 'Update an existing card's details.' That distinguishes it from read-only siblings like get_card, but it does not differentiate from other card-mutating siblings such as move_card, archive_card, or update_card_custom_field.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description only states that the card can be named by ID or board number. It provides no when-to-use guidance, no exclusions, and no comparison to alternatives such as update_card_custom_field or move_card.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.