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

No annotations exist, so the description carries the full disclosure burden. It hints at two operating modes via `keep` but never says what counts as a "word character," how digits/underscores/Unicode are treated, whether the input is mutated or a new string returned, or what the output looks like. The free-trial/wallet-cost note is the only extra context offered.

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 core clause is front-loaded and short, but the appended emoji free-trial blurb is marketing noise occupying roughly a third of the text. No filler beyond that, but the sentence structure bundles two distinct behaviors into one ambiguous clause.

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?

With no annotations, no output schema, and three fully undocumented parameters, the description should explain input shape, the `text` vs `input` choice, and return behavior. It covers none of these, leaving an agent unable to call the tool correctly without guessing.

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, so the description must compensate and largely fails. It gestures at `keep` but leaves its semantics ambiguous, and it never explains the coexistence of `text` and `input` — an agent cannot tell whether both are required, whether one overrides the other, or which one to populate.

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 gives a concrete verb and resource ("Removes punctuation from text"), so the basic operation is unambiguous. However, the second clause about `keep` ("with keep set strips all non-word characters instead") is confusingly worded — it's unclear whether `keep` preserves listed characters or triggers a different stripping mode. It also does not distinguish itself from the sibling x402-strip-punctuation, which appears to do the same thing.

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 statement of when to use this versus x402-strip-punctuation or the nearby x402-remove-accents/x402-remove-emoji tools, and no exclusions. The only usage-adjacent text is a free-trial notice, which says nothing about task selection.

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