Get Usage

Free, and a good first call: it tells you whether your key works without spending anything. Days and months follow the Europe/Brussels calendar. balance is the wallet, or null when it cannot be read.

balance is the wallet, or null when it cannot be read. today.credits_remaining is what is left of today's cap (daily_limit minus credits_used, never below 0). When the Signals API is open, month also includes by_meter: signals.search, leads.search, person.enrich and monitors.mentions, in that order, each with requests and credits_used, including zeros.

Authentication

Send your API key as a Bearer token: Authorization: Bearer gtk_…. Create the key under API Access → API Keys. A missing, invalid or revoked key is 401, including while an API is closed. A valid key while the Signals API or the Company API is closed for your organization answers 404, the same body as an unknown path. Every response includes FounderMCP-Api-Version and FounderMCP-Request-Id.

Response

• balance integer | null — Credits left in the wallet. Null when the wallet cannot be read.
• balance integer | null — Credits left in the wallet. Null when the wallet cannot be read.
• today object — credits_used, credits_remaining (daily limit minus credits used today, never below 0), daily_limit and resets_at (ISO 8601).
• month object — credits_used, requests and by_endpoint: per endpoint, requests and credits_used.
• month.by_meter object — Present only when the Signals API is open. The four meters, in order, even at zero.

Credits

Free. This call never uses credits.

Errors

• 401 authentication_error — The Authorization header is missing, or the key is unknown or revoked.
• 403 permission_error — API access is not part of your plan, or your account is suspended.
• 429 rate_limit_error — More than 60 requests per minute, or more than 3 at the same time, on one key. Wait for the Retry-After header.
• 500 internal_error — Something went wrong on our side.

Example

cURL

curl "https://foundermcp.dev/api/v1/usage" \
  -H "Authorization: Bearer $FOUNDERMCP_API_KEY"

JavaScript

const response = await fetch('https://foundermcp.dev/api/v1/usage', {
  method: 'GET',
  headers: {
    Authorization: `Bearer ${process.env.FOUNDERMCP_API_KEY}`
  }
});
const body = await response.json();

Python

import json
import os
import urllib.request

request = urllib.request.Request(
    "https://foundermcp.dev/api/v1/usage",
    headers={
    "Authorization": f"Bearer {os.environ['FOUNDERMCP_API_KEY']}"
    },
    method="GET",
)
with urllib.request.urlopen(request) as response:
    body = json.load(response)

Example response

{
  "balance": 448,
  "today": {
    "credits_used": 52,
    "credits_remaining": 948,
    "daily_limit": 1000,
    "resets_at": "2026-09-29T22:00:00.000Z"
  },
  "month": {
    "credits_used": 740,
    "requests": 61,
    "by_endpoint": {
      "person.search": {
        "requests": 24,
        "credits_used": 590
      },
      "person.enrich": {
        "requests": 37,
        "credits_used": 150
      }
    },
    "by_meter": {
      "signals.search": {
        "requests": 0,
        "credits_used": 0
      },
      "leads.search": {
        "requests": 0,
        "credits_used": 0
      },
      "person.enrich": {
        "requests": 0,
        "credits_used": 0
      },
      "monitors.mentions": {
        "requests": 0,
        "credits_used": 0
      }
    }
  }
}