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updateAsanaTask

Modify an existing Asana task's name, notes, due date, assignee, completion status, or custom fields with a single update request.

Instructions

Updates an existing Asana task with new values for name, notes, due date, assignee, completion status, or custom fields.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameNoNew name for the task
notesNoNew description or notes for the task
due_onNoNew due date for the task in YYYY-MM-DD format
taskIdYesThe unique identifier of the task to update
assigneeNoNew assignee user ID. Use "me" for the current user or null to unassign.
completedNoNew completion status for the task
custom_fieldsYesCustom fields to update. Format: { "custom_field_gid": value }. Values depend on field type (text, number, enum option GID, etc.)
Behavior2/5

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It states the tool updates tasks, but does not mention permissions, reversibility, partial update semantics, side effects, or error behavior. For a mutation tool, this is a significant gap.

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

Conciseness5/5

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

The description is a single, concise sentence that front-loads the action and resource, listing the key updateable aspects without redundancy. Every word earns its place.

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?

Despite having a relatively rich schema with nested objects and 7 parameters, the description does not explain crucial context such as partial update behavior, how to unassign, or the structure of custom_fields. It is under-specified for an update operation, leaving the agent to infer important usage semantics.

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 the schema already documents every parameter with descriptions. The description adds only a high-level list of updateable fields, providing marginal value beyond the schema. It does not clarify syntax or edge cases not already in the schema.

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

Purpose5/5

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

The description clearly states the tool updates an existing Asana task, listing the specific fields it can modify. This distinguishes it from sibling tools like createAsanaTask, readAsanaTask, and listAsanaTasks.

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

Usage Guidelines3/5

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

The description implies usage for modifying existing tasks, but provides no explicit guidance on when to use this tool versus alternatives, nor any exclusions or prerequisites. The context from the name and siblings makes it somewhat clear, but the description itself does not articulate this.

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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