Chat info

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds value by listing the returned fields, but says nothing about auth requirements, failure behavior for invalid identifiers, or whether member count is expensive to compute.

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?

A single front-loaded sentence with no wasted words; the verb and resource lead and the field list follows. Efficient, though it omits the input detail that would make the sentence earn more of its place.

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?

With no output schema, the description usefully enumerates return fields, which is appropriate. However, it leaves the required input format unexplained and gives no routing context among many chat-related siblings, so it is only minimally complete for this 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 description coverage is 0% for the single required 'chat' parameter, so the description carries the full burden — yet it never explains what 'chat' accepts (numeric id, @username, phone, invite link). It merely restates the resource, adding no input-format meaning beyond the bare 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?

States a specific verb (Fetch) and resource (info for a chat/user/channel) and enumerates the returned fields, so the agent knows exactly what it gets back. It is clear, though it doesn't explicitly differentiate itself from siblings like telegram_full_user or telegram_chat_members.

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?

There is no when-to-use guidance and no alternatives named. With close siblings such as telegram_full_user, telegram_chat_members, and telegram_list_chats in the namespace, the agent gets no help deciding when this tool is the right choice.

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