Complete Remote MCP SIWE Login

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

With no annotations, the description carries the entire behavioral burden and falls short: it does not say whether the loginId is single-use or expires, what happens if the signature was not approved, what session/credential is established on success, or whether this is idempotent. Only the approval precondition is disclosed.

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 front-loaded sentence with no filler and the action verb first. It is very terse rather than bloated; the only reason it is not a 5 is that the brevity spills over into under-specification of a stateful step.

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?

No annotations, no output schema, and no enum means the description is the only behavioral source, yet it omits what the call returns (session token, success/failure semantics), the expiry/retry behavior of loginId, and the explicit link back to start_remote_mcp_siwe_login. For a stateful two-step handshake this leaves real gaps.

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?

There is a single parameter with 100% schema description coverage, so the schema already explains that loginId comes from start_remote_mcp_siwe_login. The description adds no format, validity, or lifecycle detail beyond that, so the baseline 3 for a fully-documented param is appropriate.

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?

States a specific verb ('Complete') and resource ('remote MCP SIWE login'), and the phrase 'after the WalletChan signature request has been approved' ties it to a distinct workflow step that separates it from start_remote_mcp_siwe_login. The domain jargon (SIWE, WalletChan) is not explained, but an agent can still tell this is the terminal step of a login handshake rather than a new login or a generic sign.

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 gives an implicit precondition ('after the WalletChan signature request has been approved'), which is useful sequencing context. However, it never names start_remote_mcp_siwe_login as the required predecessor, states no when-not conditions, and offers no alternatives or error-path guidance, so the agent must infer the full call order.

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