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

Goes beyond annotations by disclosing the confirmation flow, that the default can be switched off, and that a user's Cotlet API key with app access is required. It also notes the action 'reaches other people', which flags downstream visibility that annotations (readOnlyHint=false, openWorldHint=true) only imply.

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 opening two sentences restate the same idea ('Show a post' / 'Activates one post so visitors can read it'), which is redundant. The remaining confirmation and auth sentences earn their place, but the front-loaded framing is not tight.

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?

For a single-parameter, no-output-schema tool, the definition covers the action, its visibility consequences, confirmation expectations, and auth requirements. Nothing essential to correct invocation appears missing.

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 the sole parameter post_id is fully documented in the schema (including its source, list_blog_posts). The description adds no syntax or format detail beyond the schema, so the baseline 3 applies.

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 uses a specific verb and resource ('Activates one post' / 'Show a post on your blog') and explains the effect on visitors. It is clear what the tool does, though it does not explicitly distinguish itself from siblings like systeme-io_create_blog_post or systeme-io_list_blog_posts.

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 gives confirmation guidance ('By default you confirm each call; you can switch that off') which implies how to invoke it, but offers no explicit when-to-use vs alternatives routing. The condition for selecting this over sibling post tools is left to inference.

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