{"openapi":"3.1.0","info":{"title":"The Power Trade Margin Board API","version":"1.0.0","description":"Canada-US electricity export margins, 2010-2025: CER export prices joined with EIA US state retail prices across six export corridors, plus the 1990-2026 West/East price inversion series and the hand-curated corridor crosswalk."},"servers":[{"url":"/api/v1","description":"Relative to the deployment origin"}],"paths":{"/margins":{"get":{"summary":"Margin rows by corridor and year","parameters":[{"name":"corridor","in":"query","schema":{"type":"string"},"description":"e.g. East to ISO-NE"},{"name":"year","in":"query","schema":{"type":"integer"},"description":"e.g. 2025"}],"responses":{"200":{"description":"Margin rows"}}}},"/corridors":{"get":{"summary":"The six export corridors with provinces, states, and grid operators","responses":{"200":{"description":"Corridors"}}}},"/inversion":{"get":{"summary":"West versus East export prices, 1990-2026","responses":{"200":{"description":"Inversion series"}}}},"/crosswalk":{"get":{"summary":"Hand-curated destination-to-market-region crosswalk","responses":{"200":{"description":"Crosswalk rows"}}}},"/summary":{"get":{"summary":"Headline aggregates","responses":{"200":{"description":"Summary stats"}}}}}}