memwal_login

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

With no annotations, the description carries the full burden and does well: it discloses that a browser opens, it waits for wallet approval, it writes credentials to ~/.memwal/credentials.json, and that the effect is one-time/session-enabling. These are meaningful behavioral details beyond simply saying 'login.'

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 front-loaded with the main purpose and stays focused, but there is slight redundancy: 'by opening a browser' and 'Opens the dashboard in the default browser' convey the same idea. Otherwise, every sentence adds important context.

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 auth tool with no output schema and no annotations, the description covers the trigger, the process, the credential file location, and the post-login state. It does not address failure modes or security caveats, but overall it is sufficiently complete for an agent to use 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?

The tool has zero parameters, so the baseline is 4. The description adds no parameter-specific semantics, but none are needed since the input schema is empty and schema coverage is effectively 100%.

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 specifies the verb ('Sign this MCP client into') and resource ('Walrus Memory account'), and distinguishes it from siblings by focusing on authentication rather than data operations like remember or recall. The core action is unmistakable.

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?

It explicitly states when to run the tool: 'Run once when the agent reports Walrus Memory is not signed in.' It also clarifies that other memwal_* tools become usable only after a successful login, establishing this as a prerequisite rather than an alternative.

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