meta_ads_campaigns_create

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

Discloses that the tool is mutating, reversible via rollback_apply (with rollback pausing rather than deleting), default status is PAUSED, and the campaign is a container. With no annotations, the description carries the full burden and covers key behaviors well, though could mention idempotency or duplicate handling.

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?

Three sentences, each earning its place. Front-loaded with core purpose and return value, followed by essential behavioral notes and sibling differentiation. No wasted 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 no output schema, description states it returns the new campaign id. References rollback behavior and related tools for ad sets and ads, providing a complete picture for agent planning. No gaps for a creation 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 coverage is 100% and description adds significant extra meaning: account_id format and fallback, objective old-name warning, status default and caution, daily/lifetime budget minor units and mutual exclusivity. All parameters are well-explained beyond the schema.

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?

Clearly states it creates a new campaign in Meta Ads account and returns the new campaign id. Distinguishes from sibling tools by explicitly noting that ad sets and ads must be created separately via meta_ads_ad_sets_create and meta_ads_ads_create.

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?

Provides explicit guidance on when to use: to create a campaign, with caution about immediate spend when setting status to ACTIVE. Also explains that rollback sets status to PAUSED, not delete, and that ad sets and ads are separate steps. Implicitly tells not to use this for creating ad sets or ads.

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