read_peripheral

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

With no annotations, the description carries the transparency burden. It clearly discloses a read-only operation plus decoding behavior, and the comparison to read_memory makes the meaningful interpretive step explicit. It does not detail failure modes or target-state requirements, but for a benign read-plus-decode tool the core behavior is well conveyed.

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, front-loaded sentences with no filler. The first sentence captures the purpose and the second sharpens the distinction from read_memory.

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?

The description is adequate for a straightforward read tool with a schema-covered parameter list, but there is no output schema and the description does not specify the return shape of the decoded registers. It also leaves the relationship to close siblings like decode_register and read_register implicit, so an agent may need to inspect those tools before choosing confidently.

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 100%, so peripheral and registers are already documented with names and defaults. The description adds no extra parameter-level detail beyond the tool's overall behavior, so it stays at the baseline.

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: read every register of a peripheral and decode its bit fields by name. It explicitly contrasts itself with read_memory, and the 'every register' + 'decode' wording also separates it from singular reads and pure memory reads.

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 phrase 'This is read_memory plus the meaning of what was read' gives a useful hint about when to choose this over read_memory, implying you use it when you want decoded semantics. However, it does not explicitly say when to prefer read_register, read_registers, or decode_register, or provide exclusion conditions.

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