Featureflow MCP Server

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states this is an update operation, implying mutation, but lacks details on permissions required, whether changes are reversible, rate limits, or what happens to unspecified properties. For a mutation tool with zero annotation coverage, this is a significant gap in transparency.

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 a single, efficient sentence that front-loads the core action and key updatable fields. It avoids unnecessary words, though the mention of 'variants' (not in schema) is a minor inefficiency. Overall, it's appropriately sized for its 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?

Given the tool's complexity (mutation with 3 parameters), lack of annotations, and no output schema, the description is incomplete. It doesn't cover behavioral aspects like error conditions, response format, or interaction with sibling tools (e.g., 'archive_feature'). For a mutation tool, this leaves critical gaps for the agent.

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 100%, so the input schema fully documents all three parameters (idOrUnifiedKey, name, description). The description adds minimal value by listing 'name, description, or variants' as updatable properties, but 'variants' is not in the schema, creating slight confusion. Baseline 3 is appropriate as the schema does the heavy lifting.

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 ('Update') and resource ('an existing feature's properties'), specifying the editable fields (name, description, or variants). It distinguishes from siblings like 'create_feature' (new vs. existing) and 'delete_feature' (modify vs. remove), though not explicitly. However, it doesn't fully differentiate from 'update_feature_control' (which might handle different aspects), keeping it at 4.

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 explicit guidance on when to use this tool versus alternatives is provided. It implies usage for modifying existing features but doesn't mention prerequisites (e.g., feature must exist), exclusions (e.g., cannot update archived features), or comparisons to siblings like 'update_feature_control'. This leaves the agent without clear decision-making context.

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