Blinks Execute Action

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

Annotations already indicate destructiveHint=true and readOnlyHint=false. The description reinforces this by describing the flow as sending to an Action endpoint and receiving a transaction to sign, implying mutation. It adds a caveat to preview/validate output before signing, but no new behavioral traits beyond annotations. No contradiction.

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 fairly concise at about 80 words, front-loaded with the core action. It includes necessary context (SAP MCP) and usage warnings, though the phrases 'SAP MCP context' and the repetition of 'SAP transaction tools' could be trimmed. Still, every sentence adds value.

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?

Given the tool's complexity (executing an external Solana Action and returning a transaction to sign), the description covers the key steps: sending to endpoint, receiving transaction, and need for preview/validation. An output schema exists (not shown), so return values need not be detailed. Slightly more detail on what happens after signing would improve completeness.

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?

Input schema has 100% description coverage for all three parameters (actionUrl, wallet, params). The description does not add any additional meaning beyond what the schema already provides; the only reference to parameters is a generic 'confirm the action... parameters.' Baseline score of 3 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?

The description clearly states the tool's function: execute a Solana Action by sending wallet to endpoint and receiving transaction to sign. It distinguishes from sibling blinks tools (build, confirm, get, resolve, validate) by specifying 'Use to execute a Solana Action POST flow' and referencing the blinks protocol and write operation class.

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 explicitly says when to use this tool ('Use to execute a Solana Action POST flow') and provides action items: confirm metadata, parameters, expected transaction, and user intent before invoking, and preview/validate output before signing. It does not explicitly list alternatives but the context of sibling tools makes them clear.

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