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

With no annotations, the description carries the burden, and it does add real value by disclosing the returned fields and the dual-state nature of 'timestamp' (pending calendars vs confirming block). It says nothing about lookup failure behavior when no receipt exists, latency/external calendar dependence, or whether generation is triggered as a side effect.

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 dense sentence that front-loads the artifact definition and then qualifies the timestamp field. No filler, though the parenthetical is slightly compressed and the dangling list construction ("and which models ran, anchored in...") reads awkwardly.

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, no-output-schema tool the content summary is reasonably complete about what comes back, but the missing meaning of 'name' and the absence of any failure or availability semantics leave a real gap for an agent trying to call it correctly.

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% — the single required parameter 'name' has no description at all. The description never explains whether 'name' identifies a protocol, a run, or a receipt, so the one input the agent must supply is left ambiguous; the prose about hashes does not compensate.

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 names the specific resource (a reproducibility receipt) and enumerates its contents: SHA-256 of protocol/video/model outputs, which models ran, and Bitcoin/OpenTimestamps anchoring. That enough distinguishes it from siblings like get_protocol or get_run. It stops short of a 5 because it reads as a noun-phrase definition of the artifact rather than stating the action ('returns/fetches the receipt for a given run').

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 when-to-use guidance, no prerequisites (e.g., a run must have completed), and no routing to siblings such as get_run or get_protocol for adjacent data. The agent must infer from the name alone when a receipt is the right artifact to fetch.

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