update_table_cell

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

Annotations already declare destructiveHint=true and idempotentHint=true, so the mutation and repeat-safety profile is covered. The description earns credit for the extra detail that the overwrite replaces ALL rich text segments with plain text, which is real data-loss context not in the annotations; however, it says nothing about permissions, out-of-range cell_index behavior, or what the response contains.

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

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

One summary sentence front-loads the purpose, followed by a compact Args block that maps one-to-one onto the three parameters. No redundant restatement of the tool name and no filler.

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

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

An output schema exists, so return values need not be explained, and the destructive/idempotent behavior is reinforced in prose. The only gap is edge-case behavior — invalid cell_index, non-table rows, or required auth — which would round out a mutation tool.

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

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

Schema description coverage is 0%, so the description carries the full burden and does so: row_id is identified as a table_row block ID (not a row index), cell_index is explicitly zero-based, and new_text is described as plain text that clobbers existing rich segments. Each parameter gains meaning the bare schema types do not convey.

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

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

The description gives a specific verb and resource: 'Replace the text of a single cell in a table row.' The 'single cell' scoping implicitly separates it from block-level siblings like update_block_rich_text and from row-level insert_table_row, though it never names those alternatives.

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

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

Usage is only implied by the verb 'Replace' and the row/cell scoping. There is no explicit statement of when to choose this over update_block_rich_text or update_block_text, and no prerequisites or failure conditions are given.

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