Send a photo

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

Annotations only declare readOnlyHint=false and openWorldHint=true, so the description must carry the rest. It adds the useful behavioral fact that the send is immediate (no queue/scheduling) and that it renders as an inline preview, but omits size limits, auth requirements, and failure behavior for a write operation.

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?

Two short sentences with the action front-loaded and no wasted words. It is efficient, though the extreme brevity borders on under-specification rather than tight writing.

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?

This is a mutating, open-world tool with no output schema, minimal annotations, and zero parameter documentation. The description supplies no return behavior, no target-format guidance, and no limits, so an agent lacks enough to call it reliably.

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% across three parameters. 'Send a local image' weakly implies filePath is a local filesystem path, but 'chat' (target identifier format) and 'caption' (1024-char limit, optional) receive no clarification in either the schema or the description.

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 states a specific verb and resource ('Send a local image as a photo') and clarifies the rendering mode ('inline preview'), which distinguishes it from a generic file upload. However, it never names the closest sibling, telegram_send_file, so the agent must infer the photo-vs-document distinction.

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 explicit when-to-use or when-not-to-use guidance. 'Sends immediately' hints that this bypasses scheduling, but the description never tells the agent how to choose between this, telegram_send_file, or telegram_send_message.

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