GET /v1/coverage

Returns what your API key can access — active plan, streams, earliest history timestamp.

curl -H "X-Api-Key: $KEY" https://polybk.com/v1/coverage

Response

{
  "tier": "pro",
  "streams": ["btc-5m", "btc-15m", "eth-5m", "eth-15m", "sol-5m", "sol-15m", "xrp-5m", "xrp-15m"],
  "earliest_ts": 1773360000,
  "first_month": "2026-03"
}

Field	Meaning
tier	Current plan: starter, pro or archive
streams	Stream IDs your key may query
earliest_ts	Earliest Unix timestamp your plan may query
first_month	First month of recorded history

Starter keys see one stream and a trailing ~92-day window; Pro keys see all 8 streams and full history.