trmnl_update_plugin_setting_data

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

Annotations already declare readOnlyHint=false, openWorldHint=true, idempotentHint=false and destructiveHint=false; the description is consistent with them and adds that this 'changes remote state or starts work', plus a scope caveat. It does not say what gets overwritten (merge vs replace of merge_variables) or what a successful response looks like, which matters for a non-idempotent write.

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?

Three short lines, front-loaded with the action and resource. The raw endpoint string is somewhat redundant given the resource is already named, but nothing is bloated.

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?

For a non-idempotent, open-world mutation with a nested body object, no output schema, and 33% parameter coverage, the description leaves the most important questions unanswered: the expected shape and merge semantics of merge_variables, and the effect on existing data.

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 only 33%: the critical body.merge_variables property is a bare untyped object with no description anywhere. The description says nothing about what merge_variables should contain, whether keys are merged or replaced, or what the profile parameter does, so it does not compensate for the schema gap.

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?

Specific verb+resource: 'Update data for a webhook plugin setting', backed by the concrete endpoint POST /api/plugin_settings/{id}/data. It is distinguishable from trmnl_get_plugin_setting_data (read) and trmnl_update_plugin_setting_fields (field config), though it never names those siblings explicitly.

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?

'Changes remote state or starts work' hints at side effects and 'Run only within the user-authorized scope' is a caution, not a usage condition. There is no statement of when to use this rather than trmnl_get_plugin_setting_data, trmnl_update_plugin_setting_fields, or trmnl_clear_plugin_setting_state.

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