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Greenhouse MCP

Greenhouse MCP

by benmonopoli
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Remote

get_custom_field

Retrieve a custom field definition by ID, including its name, type, and dropdown options from Greenhouse ATS.

Instructions

Get a custom field definition by ID. Read-only.

Returns field name, name_key, field type, value type, and configuration. For single/multi-select fields, custom_field_options lists the dropdown options. To find custom_field_id: list_custom_fields → match by name.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "custom_field_id": "<custom_field_id>"
    },
    "name": "get_custom_field"
  }
}

Input Schema

NameRequiredDescriptionDefault
custom_field_idYesCustom field ID — get from list_custom_fields

Output Schema

NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv0.5.0
    • addedInput schema / properties / custom_field_id / description
      Added value: +"Custom field ID — get from list_custom_fields"
  2. Addedv0.3.4

TDQS

A4.1/5.0
Behavior3/5

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

No annotations are provided, so the description carries the behavioral burden. It usefully discloses 'Read-only' and describes the returned shape, but omits auth/permission requirements and error behavior that would matter for a no-annotation tool.

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

Conciseness5/5

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

Front-loads the core purpose in the first sentence, then layers return format and the ID-lookup hint. Three short sentences with no filler.

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

Completeness5/5

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

For a single-parameter read-only getter with an output schema present, the description is complete: it names the resource, the safety profile, the returned fields, select-option behavior, and how to source the ID.

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 coverage is 100% and the single parameter is documented in the schema itself. The description's lookup hint (match by name) echoes what the schema description already says, adding only marginal value.

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

Purpose5/5

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

States a specific verb (Get) and resource (a custom field definition) scoped by ID, which cleanly separates it from list_custom_fields, create_custom_field, update_custom_field, and delete_custom_field. An agent can distinguish its role from the sibling set without opening the schema.

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

Usage Guidelines4/5

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

Explicitly routes the agent to the right way to obtain the required ID: 'To find custom_field_id: list_custom_fields → match by name.' It gives clear context for use but does not state when-not to use this tool vs. the option-related siblings.

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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