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

Annotations already declare readOnlyHint, openWorldHint, and non-destructive behavior, so the safety profile is covered. The description adds useful domain scoping but says nothing about result ranking, pagination, or hit limits, which matter for an open-world search tool. Adds some value beyond annotations but leaves behavioral gaps.

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?

One front-loaded sentence with the verb and resource first and the content scope as an illustrative list. Nothing is wasted and no preamble delays the point.

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?

An output schema exists, so return values need not be described, and annotations cover the safety profile. The description is nearly sufficient for a one-parameter search tool; only the relationship to get_doc_page is unaddressed.

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?

There is a single parameter with 100% schema description coverage, including examples ('deploy ethereum node', 'eth_call'), so the schema carries the burden. The description adds no query-syntax or formatting guidance beyond that, making 3 the correct baseline.

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 ('Search') and resource ('Chainstack docs') and enumerates the content domains covered (RPC methods, node infrastructure, Web3 APIs, guides, code examples). It does not distinguish itself from the nearby sibling get_doc_page, which is the most likely source of confusion for an agent choosing between a search and a fetch.

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 statement of when to use this tool versus get_doc_page, nor any note on query formulation, result limits, or what to do when nothing is found. The agent must infer that search precedes page retrieval.

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