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

With no annotations, the description must carry the full load; it does establish that this is a lookup and adds one genuinely useful behavioral fact — delivery is paid over x402 on the HTTP surface, implying the MCP path differs. It says nothing about idempotency, cost, or what a hit/miss looks like, so key traits remain undisclosed.

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?

One front-loaded sentence with no filler. The parenthetical is slightly cryptic but does not bloat the text; the issue here is under-specification rather than verbosity.

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?

No annotations, no output schema, and an undocumented required parameter. The description never explains what a cached verdict contains or how it differs from a live verification, leaving too much for an agent to infer before calling.

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 coverage is 0% and the sole required parameter 'framework' is never mentioned in the description. No accepted values, format, or linkage to sandbox_frameworks is given, so the one input an agent must supply is entirely undocumented.

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?

States a specific operation (look up whether a cached verdict exists), which is more than a restatement of the name, but 'verdict' is never defined and the tool isn't differentiated from siblings like sandbox_verify_receipt or sandbox_watch_status, which could plausibly overlap.

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?

No guidance on when to call this versus the other sandbox_* tools, no prerequisites, no exclusions. The parenthetical about x402 payment hints at a surface distinction but does not tell the agent which conditions should route it here.

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