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NightSquawk

@nightsquawktech/gohighlevel-mcp-server

by NightSquawk

Get GoHighLevel Free Slots

ghl_get_free_slots
Read-onlyIdempotent

Retrieve free time slots from a calendar by specifying calendar ID, start date, and end date. Use this to find available appointment slots.

Instructions

Get free slots for a calendar with GET /calendars/{id}/free-slots.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
userIdNo
endDateYesEnd date/time in milliseconds, as number or string.
timezoneNo
startDateYesStart date/time in milliseconds, as number or string.
calendar_idYesCalendar ID.
extra_queryNoOptional additional GoHighLevel fields to pass through when the API supports fields not modeled by this tool.
response_formatNoOutput format: markdown for human-readable summaries, json for structured output.markdown
Behavior3/5

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

Annotations already declare readOnlyHint, destructiveHint, idempotentHint, and openWorldHint. The description adds only the HTTP method and path, providing minimal behavioral context beyond the annotations. No contradiction.

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?

The description is a single concise sentence with no wasted words. However, it is so minimal that it sacrifices completeness.

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?

The tool has 7 parameters and no output schema, but the description does not explain return format, pagination, or behavior for date ranges. The openWorldHint suggests unknown fields, but the description lacks sufficient context for an AI agent to choose it confidently.

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

Parameters3/5

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

Schema description coverage is 71%, with most parameters described. The tool description does not add any additional meaning beyond what is in the input schema, so it meets the baseline but does not improve it.

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

Purpose4/5

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

The description clearly states the tool retrieves free slots for a calendar, specifying the HTTP method and path. However, it does not differentiate from sibling tools like ghl_get_calendar_events, which may also return time-related data.

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?

No guidance on when to use this tool versus alternatives. There is no mention of prerequisites, such as the need for a valid calendar_id, or when not to use it.

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

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