IndieStack

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

No annotations provided, so description carries full burden. It discloses critical behavioral traits: 'No restart needed — takes effect on the next query' and session-scoping ('for this session'). It also clarifies the side effect (enabling personalized features). Could mention idempotency or key validation behavior, but covers the essential operational details.

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?

Well-structured with purpose front-loaded, followed by usage trigger, benefits, behavioral note, and parameter details. The 'Args:' section is slightly redundant with the input schema but necessary given the 0% schema coverage. No extraneous content; every sentence serves a distinct purpose.

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?

Appropriate for a single-parameter authentication tool. With output schema present, the description correctly omits return value speculation. Covers activation mechanics, prerequisites (isk_ prefix), side effects, and timing behavior ('next query'). Complete given the tool's limited complexity.

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?

Schema description coverage is 0% (only title 'Key' provided). The description fully compensates by specifying the format ('starting with isk_') and acquisition source ('get one at indiestack.ai/developer'), adding essential semantic meaning that the schema completely lacks.

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 'Activate an IndieStack API key for this session' — a specific verb ('Activate'), resource ('API key'), and scope ('for this session'). This clearly distinguishes it from sibling tools like analyze_dependencies or find_tools, which handle data retrieval rather than authentication setup.

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?

Provides explicit trigger condition: 'Call this when the user provides their API key (starts with isk_)'. Also explains the benefit ('enables personalized recommendations and migration intelligence'). Lacks explicit 'when not to use' or named alternatives, though the trigger condition is sufficiently specific for an auth utility among functional tools.

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