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

Annotations already declare readOnly, idempotent, non-destructive and open-world, so safety is covered. The description usefully clarifies that this is an analytical model rather than real failure injection ('model what survives'), but says nothing about how 'current' stack state is determined under openWorldHint, or what the analysis returns.

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?

A single tightly-written sentence with the scenario condition front-loaded and zero filler. Nothing is redundant with the title or annotations.

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 one-parameter simulation tool with annotations present and no output schema, the description is minimally sufficient on intent but incomplete on mechanics — the enumerable failure domains and the meaning of combining them are absent, and the 'current stack' dependency is undefined.

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%, so the description must carry the parameter burden, and it only gestures at 'parts of the stack fail'. It never enumerates the seven allowed failure codes (dns, host, official-api, indexer, rpc, steward, ipfs-gateway) or explains that multiple can be combined and must be unique.

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 specific action ('model what survives, degrades, or becomes unavailable') on a specific resource (the CryptoPunks presentation stack under partial failure). It is clearly separable from the retrieval-oriented siblings (get_claim, get_document, search_site), though it never names or contrasts them explicitly.

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 call this versus the sibling tools, no prerequisites, and no exclusions. The only usage signal is implicit in the verb 'model', leaving the agent to guess that this is a resilience/what-if analysis rather than a way to actually induce outages.

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