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cabrt

Canvas MCP Server

by cabrt

get_all_upcoming

Retrieve upcoming assignments across all active courses within a specified number of days.

Instructions

Get upcoming assignments across all active courses.

Args: days: How many days ahead to look (default 14)

Returns: {"assignments": [{id, name, due_at, course_name, ...}, ...], "count": N}

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
daysNo
Behavior2/5

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

No annotations provided, so description must disclose behavioral traits. It mentions 'active courses' but does not define 'active', nor does it indicate whether the operation is read-only or has side effects. The return format is helpful, but key behavioral context is missing.

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?

Extremely concise with two sentences plus structured Args/Returns. No unnecessary words; every element adds value.

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

Completeness4/5

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

For a simple tool with one parameter and no annotations, the description adequately covers core functionality, parameter, and return format. Could improve by explaining 'active courses' and error conditions, but overall sufficient.

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

Parameters4/5

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

Schema coverage is 0%, but the description's Args section adds meaning beyond the schema: 'How many days ahead to look (default 14)'. This compensates well for the single parameter's lack of schema description.

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?

Clearly states 'Get upcoming assignments across all active courses', providing specific verb and resource scope. Distinguishes from siblings like get_assignments (course-specific) and get_todo (broader).

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?

Implies usage for retrieving assignments across all courses via the phrase 'across all active courses', but does not explicitly state when to use versus alternatives like get_assignments or provide exclusions.

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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