Inscribe SAP Memory

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

Annotations already declare readOnlyHint=false (write operation) and openWorldHint=true. The description adds context about storing encrypted data and visible on-chain metadata, which is useful. However, it does not disclose other behavioral traits like cost, confirmation, or side effects beyond what annotations provide.

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

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

The description is concise with two sentences: one stating the action, one providing usage guidance. It is front-loaded and avoids unnecessary words. Minor improvement could be adding a structure with separate bullet points for parameters.

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

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

Given the tool writes encrypted memory in a session/vault context, the description mentions 'Memory/session flow' but does not explicitly state prerequisites (e.g., an active session) or what the output is. With an output schema present, return values are covered, but the description could be more complete regarding the overall flow.

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

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

The input schema has no defined properties, but the description lists expected fields (sequence, encryptedData, nonce, contentHash, etc.) with types, adding significant meaning beyond the schema's generic description. The schema description coverage is 100% per context, but the tool description still adds value by specifying types.

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

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

The description clearly states the action: 'Inscribe encrypted memory using SDK VaultModule.inscribe'. It also mentions the SAP MCP context (Memory/session flow). However, it does not explicitly differentiate from the sibling tool 'sap_compact_inscribe_memory', which likely has a similar but compressed function.

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

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

The description provides guidance on what to store ('intentionally encrypted payloads or public hashes') and warns about on-chain visibility of metadata. However, it does not specify when to use this tool versus alternatives like 'sap_compact_inscribe_memory' or prerequisites (e.g., existence of a vault/session).

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