curl --request GET \
  --url https://api.letterdrop.com/api/v2/fields \
  --header 'api-key: <api-key>'

const options = {method: 'GET', headers: {'api-key': '<api-key>'}};

fetch('https://api.letterdrop.com/api/v2/fields', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.letterdrop.com/api/v2/fields"

headers = {"api-key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

{
  "data": {
    "object": "account",
    "description": "A company with competitor signals: one row of the table. Contacts (with their signals), the buying committee and the job-postings rollup are nested in it.",
    "endpoints": [
      "/accounts",
      "/accounts/lookup",
      "/accounts/{account_id}"
    ],
    "select": "fields=<key>,<key>; dotted keys reach into lists (contacts.contact_name).",
    "filter": [
      "On /accounts: filter[<key>]=<value> or filter[<key>][<operator>]=<value>."
    ],
    "keys": [
      {
        "key": "account_competitors",
        "group": "Account",
        "type": "string",
        "description": "Every competitor with signals at this account, comma-joined (\"Common Room, G2\"), as the webhook sends it.",
        "selectable": true,
        "filterable": true,
        "operators": [
          "eq",
          "ne",
          "contains",
          "exists"
        ],
        "fast_operators": [
          "eq"
        ],
        "values": [
          "HubSpot",
          "Salesforce"
        ],
        "filter_parameters": [
          "account_competitors"
        ]
      },
      {
        "key": "account_priority",
        "group": "Account",
        "type": "string",
        "description": "How soon to act, as the Competitor Monitoring table shows it. The webhook sends this as signal_priority.",
        "selectable": true,
        "filterable": true,
        "operators": [
          "eq",
          "ne",
          "contains",
          "exists"
        ],
        "fast_operators": [
          "eq"
        ],
        "values": [
          "High",
          "Medium",
          "Nurture"
        ],
        "filter_parameters": [
          "account_priority"
        ]
      },
      {
        "key": "crm_latest_opp_amount",
        "group": "CRM",
        "type": "number",
        "nullable": true,
        "description": "Its amount.",
        "selectable": true,
        "filterable": true,
        "operators": [
          "eq",
          "ne",
          "gt",
          "gte",
          "lt",
          "lte",
          "exists"
        ]
      },
      {
        "key": "crm_custom_fields",
        "group": "CRM",
        "type": "object",
        "description": "The CRM columns you added to the table, keyed \"<crm>:<object>:<field>\" (e.g. \"hubspot:company:Tier\"), each a list of values.",
        "selectable": true,
        "filterable": false,
        "filter_parameters": [
          "crm_custom_fields"
        ],
        "custom_fields": [
          {
            "key": "hubspot:company:Tier",
            "label": "Tier",
            "crm_type": "hubspot",
            "object_type": "company",
            "name": "Tier",
            "field_type": "text",
            "values": [
              "A",
              "B"
            ]
          }
        ]
      },
      {
        "key": "contacts.contact_job_title",
        "group": "Contact",
        "type": "string",
        "description": "Current job title.",
        "selectable": true,
        "filterable": true,
        "operators": [
          "eq",
          "ne",
          "contains",
          "exists"
        ]
      }
    ],
    "filter_parameters": [
      {
        "parameter": "search",
        "description": "Free-text match on company and contact names."
      },
      {
        "parameter": "preset",
        "description": "A prebuilt view of the table. CRM presets replace crm_latest_opp_stage with their own rule.",
        "values": [
          "pilot",
          "advertising",
          "capacity_based_outbound",
          "sell_now",
          "competitor_aware_tam",
          "customers_at_risk",
          "competitive_deals"
        ]
      },
      {
        "parameter": "crm_has_opp",
        "description": "false = accounts with no CRM opportunity. true is the same as listing every crm_latest_opp_stage."
      },
      {
        "parameter": "crm_has_account",
        "description": "true = the account was already in your CRM when we found it, false = net new (it was not). An account added to the CRM later can have crm_account_url set and still be net new."
      }
    ],
    "sort": [
      "latest_signal_date",
      "account_priority",
      "crm_latest_opp_created_date",
      "crm_latest_opp_close_date"
    ],
    "connected_crms": [
      "hubspot"
    ]
  },
  "meta": {
    "api_version": "2",
    "data_as_of": "2026-11-02T09:36:28.016Z",
    "cache": "hit"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "details": [
      {
        "path": "<string>",
        "message": "<string>"
      }
    ]
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "details": [
      {
        "path": "<string>",
        "message": "<string>"
      }
    ]
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "details": [
      {
        "path": "<string>",
        "message": "<string>"
      }
    ]
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "details": [
      {
        "path": "<string>",
        "message": "<string>"
      }
    ]
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "details": [
      {
        "path": "<string>",
        "message": "<string>"
      }
    ]
  }
}