Search messages globally

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

The description discloses a non-obvious behavior (global search ignores include_total_count) and states the success return shape ('message list and metadata dict'). This adds context beyond the readOnly/idempotent annotations. No contradictions exist with the 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?

Three concise sentences front-load the core purpose, followed by key search behavior and a documentation link. Every sentence earns its place with no redundancy or fluff.

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 8-parameter schema with full descriptions, the description covers global scope, return format, and a behavioral caveat, plus a documentation link for deeper reference. It's sufficiently complete for an agent to select and invoke the tool correctly without needing additional information.

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% with rich parameter descriptions, so the baseline is 3. The description restates query semantics ('Comma-separated query terms') and summarizes filter options, but doesn't add significant new parameter details beyond what the schema already provides. The include_total_count caveat is a small extra.

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 clearly states the action ('Search all Telegram chats at once') and resource (messages across all chats). The parenthetical 'not scoped to one chat' explicitly differentiates it from sibling tools like get_messages, giving it a distinct and unambiguous purpose.

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 implies use when needing cross-chat search by stating 'Search all Telegram chats at once' and contrasting with scoped search. It also provides a specific behavioral caveat ('Global search ignores include_total_count'). However, it doesn't explicitly name alternative tools for single-chat search, so the guidance is clear but not fully explicit.

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