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MOT1209

Google Colab MCP Server

by MOT1209

colab_add_cell

Insert a code or markdown cell into a notebook at a specific index or appended to the end. Provide the notebook path and source content to extend your notebook.

Instructions

Add a single cell to a notebook, at an index or appended to the end.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
pathYes
indexNo
sourceYes
cell_typeNocode

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

B3.2/5.0
Behavior2/5

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

With no annotations, the description must disclose behavioral consequences itself. 'Add' implies mutation, and the placement wording gives a little context, but it does not explain insertion semantics (e.g., shifting existing cells), side effects, required permissions, or error/return behavior.

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?

The description is a single, front-loaded sentence with no padding. It earns its place, though it is concise partly because it leaves out important behavioral and parameter context.

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?

For a mutation tool with four parameters, no annotations, and no output schema, this one-sentence description is incomplete. An agent still lacks essential input semantics, side effects, and what the call returns or how failures surface.

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

Parameters2/5

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

Schema description coverage is 0%, so the description must explain the parameters. It only clarifies the index/append behavior; path and source are completely undocumented, and cell_type's meaning/default is left to the schema. This is very partial compensation.

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 names a specific action ('Add'), a specific resource ('a cell to a notebook'), and the placement options ('at an index or appended to the end'). It is easy to tell apart from sibling tools that edit, delete, or execute cells.

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 placement options imply this is the tool for inserting a new cell, but the description never says when to choose it over edit_cell, delete_cell, or update_notebook. There is no explicit alternative guidance or exclusionary conditions.

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