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

readOnlyHint=true already tells the agent this is a safe read. The description adds useful semantics beyond the annotation, such as expiresAt being null when there is no expiry and the memory index being reference material. It omits any note on auth requirements or caching, but for a read-only tool the burden is low.

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?

A single dense sentence front-loads the core identity/auth fields before the memory-related clauses. Every clause maps to a returned field, though the trailing 'as reference material' phrasing is slightly redundant.

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?

With no output schema, the description carries the burden of explaining return values, and it enumerates the key fields (owner, company, language, scopes, allows, expiresAt) plus the memory index. It is reasonably complete, though it could clarify the relationship between memoryInstructions and the memory records.

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 tool takes zero parameters, so the baseline is 4. The schema requires nothing and the description correctly implies there is no input to negotiate.

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?

Clear verb+resource: it returns the session/token context including owner, company, language, scopes, privileges, and expiry. This is a distinct resource from siblings like user_context and product_context. However, it never explicitly distinguishes itself from user_context, which likely overlaps on the owner information.

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?

No when-to-use guidance is given. It does not say to call it at session start, to establish identity/permissions before other tools, or how it relates to the memory_list/memory_read siblings it indexes. The agent must infer the trigger condition entirely.

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