buzz_react

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It reveals that the action is a NIP-25 reaction, that it acts as the current identity, and that the default emoji is 👍. However, it does not mention side effects such as whether duplicate reactions are allowed, whether existing reactions are replaced, or what the observable result of the operation is.

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?

The description is three short sentences with every clause earning its place: protocol, required inputs, identity, and default emoji. It is front-loaded with the primary action and contains no filler or repetition.

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?

For a simple three-parameter tool with no annotations and no output schema, the description covers the core invocation needs: action, required params, default emoji, and identity. It leaves out any indication of the return value or failure conditions, but given the low complexity this is a minor gap rather than a critical one.

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 67%, with emoji and event already described in the input schema. The tool description mostly repeats this ('target message's event id') and only says 'Needs the channel' without clarifying what kind of channel identifier should be used or where to obtain it. It does not compensate for the missing channel description in the 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?

The description opens with a specific verb and resource: 'React to a message with an emoji (NIP-25).' This is unambiguous and distinguishes the tool from siblings like buzz_post or buzz_read. It also clarifies the identity aspect ('reacts as this identity') without confusing the reader.

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?

The description explicitly states the prerequisites: 'Needs the channel and the target message's event id.' This gives clear context for when the tool can be used. It does not name alternative tools, but since no sibling performs reactions, an exclusion is not necessary.

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