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SAP MCP Server

by ai.oobeprotocol.sap.mcp

Build SAP Escrow V2 Withdraw Transaction

sap_escrow_build_withdraw_transaction
Destructive

Hosted-safe unsigned builder for withdraw_escrow_v2. The depositor signs locally and can only withdraw unlocked balance after pending amounts are excluded. SAP MCP context: Hosted-safe unsigned Escrow V2 builder. The output is not submitted and is not signed by hosted SAP MCP. Preview it, then call local sap_payments_finalize_transaction with submit:true and confirm:true. Never create temporary signing scripts or read keypair JSON.

SAP MCP execution guidance: Intent: hosted unsigned transaction builder. Pricing: paid builder; estimate first, then pay/build and finalize unsigned transactions locally when returned. Routing: hosted-safe builder. If a transaction is returned, preview/sign/submit with sap_payments_finalize_transaction; never create temporary signing scripts. Signer boundary: user-controlled local profile or external signer; OOBE hosted MCP remains non-custodial.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nonceNoOptional escrow nonce as a decimal string. Defaults to 0.
amountNoWithdrawal amount as a decimal string. Amount in the escrow token smallest unit: lamports for SOL, micro-USDC for USDC, or base units for the configured SPL token.
agentWalletNoAgent owner wallet public key (base58). The escrow PDA is derived from agentWallet, depositorWallet, and nonce.
depositorWalletNoDepositor wallet public key (base58). Only the depositor can locally sign a withdrawal from this escrow.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
contentYesMCP content blocks returned to the caller.
isErrorNoTrue when the tool result represents an application-level error.

TDQS

A3.7/5.0
Behavior3/5

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

Annotations already indicate destructiveHint=true and readOnlyHint=false. The description adds that the output is unsigned and not submitted, and that only unlocked balance can be withdrawn after excluding pending amounts. However, it lacks details on failure scenarios or validation, relying on the schema and annotations for the rest.

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 verbose and repeats information across two paragraphs. For example, the second paragraph reiterates intent and routing. While all needed information is present, it could be more concise.

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?

The tool has an output schema (not shown) and the description explains the workflow (preview then finalize). However, it does not describe the output format or specifics of the returned transaction, leaving some ambiguity. Given the complexity (paid builder, multiple steps), it is adequate but not fully complete.

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?

Parameter descriptions in the input schema are comprehensive (100% coverage), so the description text itself adds little new semantic meaning. It repeats some context but does not clarify parameter constraints beyond what the schema already provides.

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 identifies the tool as a 'Hosted-safe unsigned builder for withdraw_escrow_v2', specifying the resource (withdraw transaction) and the action (build). It distinguishes this from sibling tools like create/deposit/settle escrow by detailing the depositor-only signer and unlocked balance constraint.

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 explicitly instructs the agent to preview the output and then call sap_payments_finalize_transaction with specific parameters. It warns against creating temporary signing scripts. While not fully contrasting with all sibling builders, it gives clear next steps and constraints.

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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TDQS

B3.2/5.0
Disambiguation4/5

Tools are organized by protocol prefix (e.g., adrena_, jupiter_, sap_) which helps distinguish domains. Within each protocol, tool names clearly indicate actions (e.g., openPosition, getQuote). However, with 360 tools, some cross-protocol overlaps (e.g., multiple swap tools) and many similar fetch tools in the sap_* family require careful reading of descriptions to disambiguate.

Naming Consistency4/5

Each protocol group follows a consistent naming convention (e.g., snake_case for adrena_, camelCase for 3land, sap_ prefix for SAP SDK tools). The mix of conventions across protocols is acceptable, though a uniform style would improve predictability. Minor inconsistency: hyphenated names like metaplex-nft_ vs underscores.

Tool Count2/5

360 tools is far too many for a well-scoped MCP server. This aggregates dozens of protocols and SAP-specific features, making navigation difficult. The server would benefit from being split into focused micro-servers (e.g., SAP identity, Jupiter DEX, NFT tools). The current count overwhelms the coherence of the set.

Completeness4/5

The tool set covers a vast range of Solana ecosystem activities: token operations, swaps, staking, NFT management, bridging, oracle data, identity registration, chat, escrow, subscriptions, and premium streaming. Major lifecycle operations are present, though some niche subdomains may have missing functions (e.g., detailed governance or lending management). Overall, it's comprehensive for the intended scope.

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