SAP MCP Server

Blinks Execute Action

blinks_executeAction

Destructive

Execute a Solana Action — sends wallet to the Action endpoint and receives a transaction to sign. SAP MCP context: Protocol blinks; operation class write. Use to execute a Solana Action POST flow. Confirm the action metadata, parameters, expected transaction, and user intent before invoking. Preview and validate action output before signing or submitting any returned transaction through SAP transaction tools.

SAP MCP execution guidance: Intent: SAP MCP tool workflow. Pricing: paid read-premium; estimate first, then use sap_payments_call_paid_tool when the runtime cannot replay x402 natively. Routing: hosted accountless write is blocked; do not call this as a paid hosted write and no x402 payment should be charged. Use the local sap_payments bridge or a hosted unsigned builder when user signing is required. Signer boundary: user-controlled local profile or external signer; OOBE hosted MCP remains non-custodial.

Input Schema

TableJSON Schema

Name	Required	Description
`params`	No	Key-value parameters to fill Action template variables
`wallet`	Yes	User wallet to sign the transaction
`actionUrl`	Yes	Action endpoint URL (from getAction links)

Output Schema

TableJSON Schema

Name	Required	Description	Default
`content`	Yes	MCP content blocks returned to the caller.
`isError`	No	True when the tool result represents an application-level error.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedJul 24, 2026

addedInput schema / description

Added value: +"Blinks Execute Action input schema. Intent: SAP MCP tool workflow. Pricing: paid read-premium; estimate first, then use sap_payments_call_paid_tool when the runtime cannot replay x402 natively. Routing: hosted accountless write is blocked; do not call this as a paid hosted write and no x402 payment should be charged. Use the local sap_payments bridge or a hosted unsigned builder when user signing is required. Signer boundary: user-controlled local profile or external signer; OOBE hosted MCP remains non-custodial. Use exact field names from this schema; do not guess aliases or include private key material."

First observedJul 13, 2026

TDQS

A4.2/5.0

Behavior4/5

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

Annotations already indicate destructiveHint true and openWorldHint true. The description adds behavioral context: it initiates a transaction but does not sign/submit itself, and it emphasizes previewing/validating outputs. 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.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is somewhat lengthy and repeats SAP MCP guidance both in the main text and input schema description. It front-loads the core purpose but could be more concise by avoiding duplication.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity and the presence of an output schema (not shown), the description covers workflow steps, prerequisites, routing constraints, and payment guidance. It is fairly complete for an agent to understand when and how to use the tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description mentions 'actionUrl (from getAction links)' which adds slight context, but otherwise does not significantly enhance parameter understanding beyond the schema descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states that the tool executes a Solana Action by sending a wallet to an endpoint and receiving a transaction to sign. It distinguishes itself from sibling tools like blinks_getAction and blinks_confirmAction by specifying it handles the POST flow and involves signing.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit usage guidance: use for Solana Action POST flow, confirm metadata/parameters/intent before invoking, preview and validate output before signing. It also includes routing constraints and integration with SAP payment tools, giving clear when-to-use and when-not-to-use context.

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

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