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OOBE-PROTOCOL

SAP MCP Server

sap_create_attestation

Create an on-chain attestation for an agent wallet by providing its public key, metadata hash, and optional type and expiry.

Instructions

Create an on-chain attestation for an agent wallet.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
expiresAtNoOptional expiry timestamp (as a decimal string, 0 = no expiry)
agentWalletNoAgent wallet public key (base58) to create attestation for
metadataHashNo32-byte metadata hash as a byte array, hex string, or base64 string
attestationTypeNoOptional attestation type string (default: "generic")
Behavior2/5

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

With no annotations provided, the description carries full burden for behavioral disclosure. It only states it creates an on-chain attestation but omits side effects (e.g., transaction fees, smart contract interaction, idempotency), permissions, or state changes.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

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

The description is a single efficient sentence with no wasted words, but it underspecifies the tool. Conciseness is good, but some lost value due to brevity.

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

Completeness2/5

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

Given the complexity of creating an on-chain attestation (4 optional parameters, no output schema), the description is incomplete. It does not explain return values, error conditions, prerequisites, or what 'on-chain attestation' entails.

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 each parameter is already described. The description adds no additional meaning beyond the schema, meeting the baseline expectation.

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 action ('Create'), resource ('on-chain attestation'), and target ('agent wallet'), distinguishing it from sibling tools like sap_fetch_attestation (read) and sap_revoke_attestation (delete).

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus alternatives (e.g., prerequisites like agent wallet registration, or contexts where attestation is needed). The description lacks exclusions or recommendations.

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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