update_currency
Enable or disable an existing currency by its code to update your Firefly III configuration.
Instructions
Update an existing currency.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| code | Yes | ||
| enabled | No |
Enable or disable an existing currency by its code to update your Firefly III configuration.
Update an existing currency.
| Name | Required | Description | Default |
|---|---|---|---|
| code | Yes | ||
| enabled | No |
Changes observed during successful MCP inspections.
v3.0.0Does 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 only says 'update,' implying mutation, but does not explain whether the update is partial, what happens to enabled state, or what the response is. This is a minimal but not misleading description.
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 with no filler or repetition. While it is under-specified, what is present is front-loaded and clear.
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 two-parameter mutation tool with no annotations and no output schema, this description is too sparse. It omits parameter roles, update semantics, and expected behavior, so an agent would have to rely on the schema and sibling names to use the tool correctly.
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%, and the description does not mention code or enabled at all. It fails to clarify that code likely identifies the existing currency while enabled controls its status, leaving the agent to infer the role of every parameter from names alone.
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 states a specific action (update) on a specific resource (existing currency), making the core purpose clear. It distinguishes the tool from create and delete operations, though it does not mention which currency fields can be changed.
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 guidance is given about when to use this tool versus get_currency, list_currencies, create_currency, or delete_currency. The description only says 'update an existing currency' and provides no context about prerequisites or appropriate scenarios.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.