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thenavidm

Lemon Squeezy MCP Server

by thenavidm

Update license key

update_license_key
Destructive

Modify a license key by ID to change activation limits, expiration date, or disabled status.

Instructions

Updates the license key with the given ID and provided attributes.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesExact opaque native resource ID; no traversal or URL.
accountNoExact private profile label. Does not prove store ownership; mode applies to the main API key only.
confirmNoSet true only when the user asked for exactly this action.
payloadNoComplete native JSON object body. JSON:API uses data/type/id/attributes/relationships. No mixing with body flags or payload_file. License credential is private configuration, never body input.
disabledNo
expires_atNo
payload_fileNoAbsolute regular non-symlink native JSON body file at most 1 MiB; cannot mix with payload or body flags.
activation_limitNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv3.0.0
    • changedInput schema / properties / confirm / description
      Previous value: -"Explicit approval for this requested effect, including private output files."New value: +"Set true only when the user asked for exactly this action."
  2. First observedv2.0.0

TDQS

C2.4/5.0
Behavior2/5

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

Annotations already declare destructiveHint=true, idempotentHint=false, and openWorldHint=true, so the safety profile is covered. The description adds nothing beyond that: it does not say what is destroyed or overwritten, whether unspecified attributes are preserved, or any auth/permission requirements. For a destructive mutation it contributes no behavioral context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single front-loaded sentence with no filler or redundancy. It is efficient, though the brevity reflects under-specification rather than disciplined concision.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a destructive, non-idempotent mutation with 8 parameters, a nested payload object, mutually exclusive input modes (payload vs. payload_file vs. body flags), and no output schema, the description is far too thin. An agent lacks the context needed to call it correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 63%, so a meaningful portion of the 8 parameters rely on the description, which only gestures at "given ID and provided attributes" without clarifying the payload vs. body-flags vs. payload_file alternatives, the confirm flag, or account scoping. It adds no meaning beyond what the schema already encodes.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description names a specific verb (updates) and resource (license key), so the action is identifiable. However, "Updates the license key" essentially restates the title verbatim, and "provided attributes" is vague. It offers no differentiation from the many sibling read/update tools such as get_license_key or update_customer.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no guidance on when to use this tool versus alternatives like get_license_key or the instance/license lifecycle tools (activate_license, deactivate_license). No prerequisites, no when-not-to-use, and no mention of the confirm parameter's role in selection.

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