{"specification":"API Commons Rate Limits","specificationVersion":"0.1","provider":"flatin.pt","providerId":"flatin-pt","created":"2026-09-13","modified":"2026-10-01","description":"Enforced request limits for the flatin.pt REST API and MCP server. There are no keys: limits apply per client IP address over a sliding 60-second window. A refused request gets HTTP 429 with a Retry-After header in seconds. The whole IMI dataset is one CSV file, so there is no need to walk the API municipality by municipality.","url":"https://flatin.pt/api/rate-limits.json","humanURL":"https://flatin.pt/en/tools/api-and-data/#rules","responseCodes":{"throttled":429},"headers":{"retryAfter":"Retry-After"},"limits":[{"tier":"free","name":"REST API","scope":"ip-address","metric":"requests","limit":120,"timeFrame":"minute","applies":["https://flatin.pt/api/v1"]},{"tier":"free","name":"MCP server","scope":"ip-address","metric":"requests","limit":60,"timeFrame":"minute","applies":["https://flatin.pt/mcp"]}]}