SAP MCP Server

Send-arcade Play Game

send-arcade_playGame

Enter and play a game on Send Arcade (pays entry fee via transaction). SAP MCP context: Protocol send-arcade; operation class write. Use for Send Arcade game listing and play flows. Confirm account, wager or spend, and game rules before writes. Keep gaming activity separate from SAP identity unless it is intentionally part of an agent profile.

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
`gameId`	Yes	Game ID parameter for Send-arcade Play Game.
`wallet`	Yes	Solana public key (base58)
`betAmount`	No	Raw token amount (smallest unit)

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: +"Send-arcade Play Game 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

A3.9/5.0

Behavior4/5

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

Annotations already indicate a write operation (readOnlyHint=false) and non-destructive (destructiveHint=false). The description adds that it 'pays entry fee via transaction' and advises to 'Confirm account, wager or spend, and game rules before writes.' This provides useful behavioral context beyond annotations. However, it does not disclose return value or side effects.

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 verbose with multiple paragraphs, including repetitive SAP MCP execution guidance that also appears in the input schema description. While front-loaded with core purpose, it could be more concise. Every sentence is not essential.

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

Completeness3/5

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

Given the parameter count (3), high schema coverage, and presence of annotations and output schema, the description is moderately complete. It explains the core action and fee payment, but does not describe the output (e.g., transaction signature, game result) or any post-conditions. The SAP MCP guidance addresses execution constraints but not tool outcome.

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 description coverage is 100%, so each parameter (gameId, wallet, betAmount) already has a description in the input schema. The tool description does not add additional meaning beyond what the schema provides. Per guidelines, baseline is 3.

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 'Enter and play a game on Send Arcade (pays entry fee via transaction).' This provides a specific verb (play) and resource (game), and distinguishes from sibling send-arcade_listGames which lists games.

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

Usage Guidelines4/5

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

The description includes usage context: 'Use for Send Arcade game listing and play flows. Confirm account, wager or spend, and game rules before writes.' It provides explicit guidance to confirm before writing, and includes SAP MCP execution details about pricing and routing. However, it does not explicitly state when not to use this tool versus alternatives.

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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