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SAP MCP Server

by ai.oobeprotocol.sap.mcp

Das Get Assets By Owner

das_getAssetsByOwner
Read-onlyIdempotent

Get all NFTs/assets owned by a wallet via DAS (supports pagination). SAP MCP context: Protocol das; operation class read. Use for read-only DAS NFT and asset discovery by owner, creator, collection, or search query. Prefer DAS reads before Metaplex writes when validating existing assets for an agent profile, collection, or metadata update.

SAP MCP execution guidance: Intent: read/discovery workflow. Pricing: paid read-premium; estimate first, then use sap_payments_call_paid_tool when the runtime cannot replay x402 natively. Routing: paid hosted call; call sap_estimate_tool_cost first, then use sap_payments_call_paid_tool if the runtime cannot handle x402 natively. Signer boundary: hosted reads/builders never receive keypair bytes; value-moving results must be finalized locally when signing is required.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
pageNoPage pagination control for Das Get Assets By Owner.
afterNoAfter parameter for Das Get Assets By Owner.
limitNoLimit controlling the maximum number of results returned by Das Get Assets By Owner.
beforeNoBefore parameter for Das Get Assets By Owner.
sortByNoSort By parameter for Das Get Assets By Owner.
ownerAddressYesSolana public key (base58)

Output Schema

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

TDQS

A4/5.0
Behavior4/5

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

Annotations already declare readOnlyHint and destructiveHint false. The description adds valuable context such as DAS protocol, operation class read, pagination support, and payment routing guidance. It does not contradict annotations and provides useful behavioral details beyond the structured fields.

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 contains redundancy, particularly the repeated SAP MCP execution guidance that also appears in the input schema. The initial sentence is effective, but the overall text is longer than necessary and could be more compactly structured.

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 presence of an output schema and high schema coverage, the description adequately covers purpose, usage, and behavioral context. It includes payment routing and signer boundary information, but lacks specifics on error conditions or rate limits.

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% and the input schema describes each parameter clearly. The description adds minimal additional meaning beyond mentioning pagination (relates to page, after, before, limit). Baseline 3 is appropriate as the description does not significantly enhance parameter understanding.

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 the tool retrieves NFTs/assets owned by a wallet via DAS and supports pagination. It distinguishes from sibling tools like das_getAssetsByCollection and das_getAssetsByCreator by focusing on owner-based retrieval.

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 provides clear context for when to use the tool (read-only DAS discovery) and expresses preference for DAS reads before Metaplex writes. However, it does not explicitly exclude when not to use it or mention alternative tools for write operations.

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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