hedera_update_file

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

The description notes that the tool builds an 'unsigned' update, which implies it does not submit to the network. However, it does not explain the implications (e.g., the transaction must be signed and submitted separately), nor does it disclose potential side effects, permissions required, or that contents are replaced entirely. No annotations are provided to compensate.

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?

The description is a single sentence of 12 words, which is efficient. However, it could front-load the key action more explicitly and add a brief sentence about usage to improve structure.

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?

Given 4 parameters, no output schema, and the complexity of building an unsigned transaction, the description is incomplete. It does not describe the return value (the built transaction), execution prerequisites, or behavior for partial updates.

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?

With 0% schema description coverage, the description should compensate but only mentions 'contents and/or memo' while ignoring required parameter fileId and optional payerAccountId. It provides no format hints or constraints beyond what the schema property names imply.

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 clearly states the verb (build/update), the resource (file), and the scope (contents and/or memo). It distinguishes from siblings like hedera_create_file and hedera_append_file by specifying 'update' and 'replaces'.

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?

No guidance is provided on when to use this tool versus alternatives (e.g., when to use hedera_create_file, hedera_append_file, or hedera_delete_file). It does not mention prerequisites, such as the file must exist, or that the tool only builds an unsigned transaction.

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