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, and it fails. It does not mention signed-vs-unsigned behavior, the integer width used, whether the value is coerced from a string, or what happens to negative inputs. One sentence of pure name restatement.

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?

It is short, but it is not concise in a useful way -- it is an under-specified tautology that repeats the name twice and front-loads no actionable information.

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 bit operation with no annotations, no output schema, and a string parameter whose semantics are non-obvious (radix, width, signedness), the description is completely inadequate. An agent cannot confidently call this correctly versus its siblings.

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 the single parameter 'value' is documented in the schema as 'Value to process'. The description adds no meaning beyond this, which is the baseline 3 when the schema does the heavy lifting.

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 'Bit Shift Right: Bit Shift Right' names a specific bitwise operation, so the agent can tell what the resource is, but it does no more than restate the tool name. It fails to distinguish itself from its direct siblings like x402-bit-shift-left and x402-bit-unsigned-shift-right, whose existence makes the distinction crucial.

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 guidance whatsoever on when to use this versus the unsigned right shift or left shift siblings. No conditions, no exclusions, no alternatives are mentioned.

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