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

With no annotations provided, the description carries the behavioral disclosure burden. It conveys that this is a reference/how-to tool, implying read-only informational behavior, and it lists what content the spec covers. However, it does not explicitly state the return format, whether any live lookups occur, or that it does not perform registrations/actions on the user's behalf. There is no contradiction with annotations.

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 description is a single dense sentence with a colon-led enumeration, and every listed item is relevant with no filler. It is front-loaded with the overall purpose. However, the run-on structure is somewhat harder to parse than a short bulleted or two-sentence version.

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 zero-parameter tool with an output schema, this description covers the major content areas: chains, event types, detection rules, stream registration, row fields, and RPC verification. It is enough for an agent to decide to invoke it and know what to expect. The main gap is explicit selection guidance, but that is already captured under usage guidelines.

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?

The tool has zero parameters and the schema is empty, so there is no parameter documentation burden. The description still adds value by summarizing the content an agent will receive, which goes beyond the bare schema. This matches the baseline for a zero-parameter tool.

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 clearly identifies the tool as an explanatory spec for MEV order flow data, enumerating the four chains, six event types, detection rules, stream event, row fields, and RPC verification. This is specific and not a tautology. However, it does not explicitly differentiate itself from sibling tools like mev_intel or mev_pressure, so it stops short of full sibling clarity.

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?

The description implies a use case: consult this tool to understand how MEV order flow data is produced or to check/verify it yourself. It does not explicitly state when to choose this over alternatives, nor does it point to siblings like stream_register for actual registration or victim_flow for transaction re-derivation. The usage context is present but left to inference.

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