x_api_get_spaces_by_ids

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

With no annotations, the description carries full burden and does exceptionally well. It discloses read-only risk, required OAuth scopes (space.read, tweet.read, users.read), environment-selection behavior for scoped credentials, expected response shape, common failure conditions, and safety warnings about sensitive data.

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 structured into labeled sections and front-loads the purpose. Each section adds value, but the 'Use when: Get Spaces by IDs' line is a redundant tautology that should have been omitted. Overall, it remains efficient for the tool's complexity.

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 lack of an output schema and annotations, the description is remarkably complete. It covers auth prerequisites, environment-selection behavior, parameter roles, expected response shape, failure conditions, and recommended companion tools, leaving little room for ambiguity.

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 description adds meaning beyond the schema by explaining ids as 'query, array, required', specifying that scopeTenantId plus exactly one of scopeUserId/scopeAccountId selects the auth principal, and describing credentialKey as selecting a non-default profile. It misses authorizationKey and preferredAuthType, but overall provides substantial parameter context.

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 opens with 'Get Spaces by IDs,' a specific verb+resource+scope statement. It clearly distinguishes from sibling tools like x_api_get_spaces_by_id (singular) and x_api_get_spaces_by_creator_ids by emphasizing plural IDs.

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 'Use when' line merely restates the tool's name/function ('Get Spaces by IDs'), providing no decision context. The 'Do not use when' section offers some guidance, steering users toward exploratory tools like x_schema_discovery or x_query_suggestion, but it does not explicitly compare to related space-fetching siblings, leaving ambiguity about which get_spaces variant to choose.

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