Edit a Meta campaign / ad set / ad

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

Annotations indicate not read-only and not destructive. The description adds critical behavioral details: setting ACTIVE triggers real spend, pausing/renaming/archiving are safe, and confirm is mandatory for activation. No contradiction with annotations.

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 four sentences with clear front-loading of purpose, then key details, then critical warning. Every sentence adds value; no unnecessary words.

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 the high schema coverage, presence of output schema, and complexity of the tool (7 params, mutation with safety concerns), the description is complete. It covers all necessary usage context for safe invocation.

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 coverage is 100%, but the description adds value by mapping high-level operations to parameters (e.g., 'rename' → name, 'retarget' → targeting) and emphasizing the confirm requirement. It does not cover every param detail but enhances understanding.

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 explicitly states the action (update) and the resources (campaign, ad set, ad) and lists specific operations (rename, budget, retarget, status). It distinguishes from siblings like delete_meta_object and create_meta_campaign.

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?

It provides clear prerequisites (objectId from list_meta_ads, adAccountId) and warns about real ad spend requiring user confirmation and confirm:true. It implies when not to use (creating instead of updating) but does not explicitly list all alternative tools.

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