{"info":{"description":"Deterministic synthetic test fixtures. Read-only public API; no API key required.","title":"Lumen Data API","version":"2026-10-01.1"},"openapi":"3.1.0","paths":{"/api/fixtures":{"get":{"parameters":[{"in":"query","name":"q","schema":{"maxLength":120,"type":"string"}}],"responses":{"200":{"description":"Synthetic fixture or metadata"},"404":{"description":"Unknown fixture"},"422":{"description":"Invalid parameter"},"429":{"description":"Rate limit; honor Retry-After"},"503":{"description":"Service unavailable"}},"summary":"List and search fixture metadata"}},"/api/fixtures/{dataset_id}":{"get":{"parameters":[{"in":"path","name":"dataset_id","required":true,"schema":{"enum":["climate","power","mobility","orders","missing-data","events","pagination"],"type":"string"}},{"in":"query","name":"offset","schema":{"default":0,"maximum":1000,"minimum":0,"type":"integer"}},{"in":"query","name":"limit","schema":{"default":20,"maximum":100,"minimum":1,"type":"integer"}}],"responses":{"200":{"description":"Synthetic fixture or metadata"},"404":{"description":"Unknown fixture"},"422":{"description":"Invalid parameter"},"429":{"description":"Rate limit; honor Retry-After"},"503":{"description":"Service unavailable"}},"summary":"Read a stable page of synthetic records"}},"/downloads/{dataset_id}.{format}":{"get":{"parameters":[{"in":"path","name":"dataset_id","required":true,"schema":{"enum":["climate","power","mobility","orders","missing-data","events","pagination"],"type":"string"}},{"in":"path","name":"format","required":true,"schema":{"enum":["csv","json"],"type":"string"}}],"responses":{"200":{"description":"Synthetic fixture or metadata"},"404":{"description":"Unknown fixture"},"422":{"description":"Invalid parameter"},"429":{"description":"Rate limit; honor Retry-After"},"503":{"description":"Service unavailable"}},"summary":"Download all rows as CSV or JSON"}},"/manifest.json":{"get":{"parameters":[],"responses":{"200":{"description":"Synthetic fixture or metadata"},"404":{"description":"Unknown fixture"},"422":{"description":"Invalid parameter"},"429":{"description":"Rate limit; honor Retry-After"},"503":{"description":"Service unavailable"}},"summary":"Get release metadata and SHA-256 checksums"}}},"servers":[{"url":"https://lumenfixtures.com"}]}