arc200_transfer_txn

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It transparently states that the tool 'simulates' a transfer and returns an 'unsigned' txn group, meaning no on-chain effect occurs and the result must be signed externally with UluWalletMCP. This is valuable context, though it does not address error cases or prerequisites.

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, compact sentence that front-loads the core action and output format. It contains no redundant or filler words, making it highly efficient and easy to parse.

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?

The tool has no output schema, so the description's mention of 'unsigned txn group as base64 strings' provides essential return-format information. It also hints at the next step (signing with UluWalletMCP). However, it does not describe the structure of the returned group or mention that the appId may be an ARC-72 contract as noted in the schema, leaving minor gaps for a moderately complex tool.

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 input schema already provides descriptions for all 5 parameters, achieving 100% coverage. The tool description adds no parameter-specific meaning beyond the schema. It does not clarify base-unit amounts or the requirement that the sender sign, but those are already covered in the schema, so the description meets the baseline.

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 states a specific action and resource: 'Simulate ARC-200 transfer' and return an unsigned txn group as base64 strings. It distinguishes from read-only ARC-200 tools by its transaction-building nature, but it does not explicitly differentiate from the sibling arc200_transfer_from_txn, relying on the naming convention and schema fields (sender/receiver) to imply a direct transfer.

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 provides no explicit guidance on when to use this tool versus alternatives such as arc200_transfer_from_txn or arc200_approve_txn. The only hint is 'sign with UluWalletMCP', which implies a signing workflow, but there are no clear conditions, prerequisites, or exclusions.

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