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

Annotations only declare readOnlyHint and openWorldHint, so the description's addition of the paid-access requirement ('API key, wallet token, or x402 payment') is genuinely valuable context an agent cannot get elsewhere. It also discloses the 'approved' curation filter, though it omits pagination behavior and whether the payment/gating failure mode returns an error or empty set.

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?

Hmm — the description is compact: three sentences, no filler, purpose front-loaded. The 'Agent-shaped items' sentence is jargon but earns its place by describing the return payload in the absence of an output schema. This is efficient overall.

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?

There is no output schema, so the description correctly spends a sentence enumerating returned fields (signal, tokens[], narrative_id, context, sentiment_value). Combined with the payment note, an agent knows purpose, gating and payload shape. It falls short only on the three unfiltered parameters and on failure/empty-result behavior.

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 only 29%, so the description must compensate. It maps roughly onto four of seven parameters (vertical, topic=category, tokens, time=since) but leaves limit, language and min_importance undocumented in both places, and adds no format detail for tokens beyond what the schema already says.

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?

States a specific verb+resource: 'Latest approved news across crypto, finance, tech and Turkish markets,' and even names the item shape the agent gets back. It is clearly distinguishable from stats-oriented siblings like muhabbit_sentiment_index or muhabbit_ticker_summary, but it never explicitly contrasts with the closest sibling, muhabbit_search, so an agent must infer which is the right retrieval path.

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?

'Filter by vertical, topic, tokens or time' implies the intended usage pattern but gives no when-to-use/when-not guidance and no alternatives. With muhabbit_search, muhabbit_events and muhabbit_narratives in the sibling set, an explicit routing rule would materially help and is absent.

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