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update_task

Update an existing task by modifying its title, description, dates, priority, assignments, or applied categories. Only supply fields to change.

Instructions

Update an existing task

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
titleNoNew task title (optional)
taskIdYesTask ID to update
bucketIdNoNew bucket ID (optional)
priorityNoPriority: 1=urgent, 3=important, 5=medium, 9=low (optional)
assignmentsNoAssignments keyed by user ID. Use null to remove, or plannerAssignment object to add/update.
descriptionNoNew task description (optional)
dueDateTimeNoNew due date in ISO 8601 format (optional)
startDateTimeNoNew start date in ISO 8601 format (optional)
percentCompleteNoPercentage of task completion 0-100 (optional)
appliedCategoriesNoLabels/categories as JSON string with category names as keys and boolean values. To ADD a tag set it to true (e.g., '{"category1":true}'). To REMOVE a tag you MUST set it to false (e.g., '{"category1":false}') — sending {} will NOT remove anything.
Behavior2/5

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

No annotations provided, so description must disclose behavioral traits. Merely says 'Update', implying mutation, but does not explain overwrite behavior, required fields beyond taskId (though schema shows others optional), or whether missing fields are left unchanged. Without these details, agent may misuse the tool.

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

Conciseness3/5

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

Extremely concise (4 words), but too sparse. While brevity is valued, it sacrifices useful context. A middle ground would be better.

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?

Tool has 10 parameters with nested objects and no output schema. Description fails to mention behavior like partial update semantics, permission requirements, or rate limits. For a complex mutation tool, this is incomplete.

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 parameters are well-documented in schema. Description adds no additional meaning beyond what is in schema, but baseline of 3 is appropriate given high coverage.

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?

Description clearly states the verb 'update' and resource 'existing task', distinguishing from create_task and delete_task. Could be more specific about what can be updated, but sufficient for basic understanding.

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?

No guidance on when to use this tool vs alternatives (create_task, delete_task, get_task). No context on prerequisites, idempotency, or best practices for partial updates.

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

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