Narrative Pulse (deprecated → use narrative(mode='pulse'))

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

Annotations already cover read-only, idempotent, and non-destructive behavior. The description adds the deprecation context, which is a behavioral trait. No contradictions with annotations, but no additional behavioral details beyond the deprecation notice.

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 very short and front-loads the deprecation warning. It is concise, though it lacks structured formatting.

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 deprecation and available annotations and output schema, the description sufficiently guides an agent to not use the tool and to migrate to the alternative. Original functionality details are omitted, which is acceptable for a deprecated 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%, and the description does not explain the 'symbol' parameter. It only hints that the replacement uses the same parameter, but does not add meaning for the original tool's parameter.

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 tool is deprecated and directs to its replacement, narrative(mode='pulse'). While it doesn't describe the original functionality, the deprecation message makes the purpose clear: this tool should not be used.

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?

Explicitly states the tool is deprecated and provides the exact replacement call with parameters, leaving no ambiguity about when to avoid this tool and which alternative to use.

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