getBeaconBlobSidecars

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

Lacks annotations entirely. Description does not disclose read-only nature, required permissions, or potential side effects. Only states basic purpose.

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?

Extremely concise: one sentence front-loaded with verb and resource. No extraneous words.

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 3-parameter tool with no output schema and no annotations, the description is minimal but covers the core idea. Lacks details on optionality of indices and expected output format.

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 100% so schema fully describes parameters. Description adds minimal extra meaning beyond referencing EIP-4844, not enough to raise score above baseline 3.

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?

Clearly states the verb 'Get' and the specific resource 'blob sidecars for a Beacon Chain block', with relevant context 'EIP-4844 blob data'. Distinguishes itself from sibling tools like getBeaconBlock.

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?

Provides no guidance on when to use this tool versus alternatives. No mention of prerequisites, filters, or when not to use it.

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