{"openapi":"3.1.0","info":{"title":"Mongolia Statistics API","version":"1.0.0","description":"Official Mongolian inflation statistics straight from the National Statistics Office of Mongolia (NSO) via its 1212.mn PxWeb open-data service — no key, read live. The cpi endpoint returns the headline national Consumer Price Index (Overall index, base 2023=100) for the latest month with the index level plus month-on-month and year-on-year inflation, computed from the official series. The cpi/series endpoint returns the historical monthly CPI index and year-on-year rate over the last N months, ready to chart. The cpi/groups endpoint breaks the latest CPI down across all thirteen COICOP groups (food, housing, transport and so on) with index and annual change for each. The cpi/annual endpoint gives the annual-average CPI and average inflation for every year on record. The meta endpoint documents the source. Live data from Mongolia NSO PxWeb, lightly cached. Live. 5 endpoints. This serves Mongolian national price statistics; for the tugrik exchange rate use an FX / central-bank API.","contact":{"name":"PremiumApi","url":"https://www.oanor.com/by/premiumapi"}},"servers":[{"url":"https://api.oanor.com/mongolia-stats-api","description":"oanor gateway"}],"tags":[{"name":"Inflation"},{"name":"Meta"}],"components":{"securitySchemes":{"oanorKey":{"type":"apiKey","in":"header","name":"x-oanor-key","description":"Get your key at https://www.oanor.com/developer/keys"}}},"security":[{"oanorKey":[]}],"paths":{"/v1/cpi":{"get":{"operationId":"get_v1_cpi","tags":["Inflation"],"summary":"Mongolia CPI (latest month): index, MoM and YoY","description":"","parameters":[],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"base":"2023 = 100","index":127.1,"period":"2026-05","source":"National Statistics Office of Mongolia (1212.mn, table DT_NSO_0600_001V3)","country":"Mongolia","indicator":"Consumer Price Index (Overall index)","change_mom_pct":1.19,"change_yoy_pct":11.1},"meta":{"timestamp":"2026-06-15T20:40:32.384Z","request_id":"9176ce9f-8695-488a-92ad-66f93a605e4c"},"status":"ok","message":"Mongolia CPI retrieved","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}},"/v1/cpi/annual":{"get":{"operationId":"get_v1_cpi_annual","tags":["Inflation"],"summary":"Annual-average CPI + inflation per year","description":"","parameters":[],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"base":"2023 = 100","count":17,"years":[{"year":"2010","months":12,"average_index":35.52},{"year":"2011","months":12,"average_index":38.63,"annual_avg_change_pct":8.76},{"year":"2012","months":12,"average_index":43.98,"annual_avg_change_pct":13.85},{"year":"2013","months":12,"average_index":48.65,"annual_avg_change_pct":10.62},{"year":"2014","months":12,"average_index":54.94,"annual_avg_change_pct":12.93},{"year":"2015","months":12,"average_index":58.67,"annual_avg_change_pct":6.79},{"year":"2016","months":12,"average_index":59.13,"annual_avg_change_pct":0.78},{"year":"2017","months":12,"average_index":61.66,"annual_avg_change_pct":4.28},{"year":"2018","months":12,"average_index":65.83,"annual_avg_change_pct":6.76},{"year":"2019","months":12,"average_index":70.66,"annual_avg_change_pct":7.34},{"year":"2020","months":12,"average_index":73.3,"annual_avg_change_pct":3.74},{"year":"2021","months":12,"average_index":78.7,"annual_avg_change_pct":7.37},{"year":"2022","months":12,"average_index":90.62,"annual_avg_change_pct":15.15},{"year":"2023","months":12,"average_index":100,"annual_avg_change_pct":10.35},{"year":"2024","months":12,"average_index":106.19,"annual_avg_change_pct":6.19},{"year":"2025","months":12,"average_index":115.33,"annual_avg_change_pct":8.61},{"year":"2026","months":5,"average_index":123.14,"annual_avg_change_pct":6.77}],"source":"Mongolia NSO DT_NSO_0600_001V3","country":"Mongolia","indicator":"CPI annual average + inflation"},"meta":{"timestamp":"2026-06-15T20:40:32.474Z","request_id":"ca1b14d9-4518-4c03-ba82-b5aa6c36d24d"},"status":"ok","message":"Mongolia CPI annual averages retrieved","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}},"/v1/cpi/groups":{"get":{"operationId":"get_v1_cpi_groups","tags":["Inflation"],"summary":"Latest CPI across all 13 COICOP groups","description":"","parameters":[],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"base":"2023 = 100","count":13,"groups":[{"group":"1","index":144.9,"label":"Food and non-alcoholic beverages","change_yoy_pct":23.32},{"group":"2","index":119.4,"label":"Alcoholic  beverages, tobacco","change_yoy_pct":11.48},{"group":"3","index":122.4,"label":"Clothing, footwear and cloth","change_yoy_pct":6.81},{"group":"4","index":128.6,"label":"Housing, water, electricity and fuels","change_yoy_pct":1.66},{"group":"5","index":120.1,"label":"Furnishings, household equipment","change_yoy_pct":7.91},{"group":"6","index":116.3,"label":"Health","change_yoy_pct":7.09},{"group":"7","index":108.5,"label":"Transport","change_yoy_pct":5.75},{"group":"8","index":103.1,"label":"Communication","change_yoy_pct":1.58},{"group":"9","index":117,"label":"Recreation and culture","change_yoy_pct":6.27},{"group":"10","index":146,"label":"Education","change_yoy_pct":12.74},{"group":"11","index":137.9,"label":"Restaurants and hotels","change_yoy_pct":11.03},{"group":"12","index":137.4,"label":"Insurance and financial services","change_yoy_pct":16.94},{"group":"13","index":132.9,"label":"Miscellaneous goods and services","change_yoy_pct":9.83}],"period":"2026-05","source":"Mongolia NSO DT_NSO_0600_001V3","country":"Mongolia","indicator":"CPI by COICOP group"},"meta":{"timestamp":"2026-06-15T20:40:32.563Z","request_id":"65769e1f-24d5-4bd2-a1b3-411ad6ceea2d"},"status":"ok","message":"Mongolia CPI by group retrieved","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}},"/v1/cpi/series":{"get":{"operationId":"get_v1_cpi_series","tags":["Inflation"],"summary":"Historical CPI index + YoY series","description":"","parameters":[{"name":"months","in":"query","required":false,"description":"Number of recent months (default 24, max 120)","schema":{"type":"string"},"example":"24"}],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"base":"2023 = 100","count":24,"series":[{"index":105.9,"period":"2024-06","change_yoy_pct":4.54},{"index":106,"period":"2024-07","change_yoy_pct":5.05},{"index":107,"period":"2024-08","change_yoy_pct":6.15},{"index":107,"period":"2024-09","change_yoy_pct":6.36},{"index":107.5,"period":"2024-10","change_yoy_pct":6.54},{"index":109.2,"period":"2024-11","change_yoy_pct":7.37},{"index":110.5,"period":"2024-12","change_yoy_pct":8.33},{"index":111.8,"period":"2025-01","change_yoy_pct":8.75},{"index":113.4,"period":"2025-02","change_yoy_pct":9.57},{"index":113.8,"period":"2025-03","change_yoy_pct":9.11},{"index":114.1,"period":"2025-04","change_yoy_pct":8.67},{"index":114.4,"period":"2025-05","change_yoy_pct":8.33},{"index":114.6,"period":"2025-06","change_yoy_pct":8.22},{"index":114.6,"period":"2025-07","change_yoy_pct":8.11},{"index":116.4,"period":"2025-08","change_yoy_pct":8.79},{"index":116.6,"period":"2025-09","change_yoy_pct":8.97},{"index":117.4,"period":"2025-10","change_yoy_pct":9.21},{"index":118.1,"period":"2025-11","change_yoy_pct":8.15},{"index":118.8,"period":"2025-12","change_yoy_pct":7.51},{"index":120.2,"period":"2026-01","change_yoy_pct":7.51},{"index":120.7,"period":"2026-02","change_yoy_pct":6.44},{"index":122.1,"period":"2026-03","change_yoy_pct":7.29},{"index":125.6,"period":"2026-04","change_yoy_pct":10.08},{"index":127.1,"period":"2026-05","change_yoy_pct":11.1}],"source":"Mongolia NSO DT_NSO_0600_001V3","country":"Mongolia","indicator":"CPI Overall monthly series"},"meta":{"timestamp":"2026-06-15T20:40:32.644Z","request_id":"dfb933b3-45fd-4fea-86d5-bb8d21d70d09"},"status":"ok","message":"Mongolia CPI series retrieved","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}},"/v1/meta":{"get":{"operationId":"get_v1_meta","tags":["Meta"],"summary":"API metadata","description":"","parameters":[],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"api":"Statistics Mongolia (NSO) API","notes":"Live data from Mongolia NSO PxWeb (json-stat2); year-on-year and month-on-month computed from the index series.","source":"National Statistics Office of Mongolia — 1212.mn PxWeb API (data.1212.mn)","country":"Mongolia","endpoints":["/v1/cpi","/v1/cpi/series","/v1/cpi/groups","/v1/cpi/annual","/v1/meta"],"documentation":"https://mongolia-stats-api.oanor.dev","primary_indicator":"National base Consumer Price Index (table DT_NSO_0600_001V3, base 2023=100, Overall + 13 COICOP groups)"},"meta":{"timestamp":"2026-06-15T20:40:32.734Z","request_id":"faa218e7-747b-4165-8ae9-8b8e7e1c3848"},"status":"ok","message":"Meta","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}}},"x-oanor-pricing":[{"slug":"free","name":"Free","price_cents_month":0,"monthly_call_quota":250,"rps_limit":2,"hard_limit":true},{"slug":"basic","name":"Basic","price_cents_month":1090,"monthly_call_quota":18100,"rps_limit":6,"hard_limit":true},{"slug":"pro","name":"Pro","price_cents_month":2880,"monthly_call_quota":94500,"rps_limit":22,"hard_limit":true},{"slug":"mega","name":"Mega","price_cents_month":6470,"monthly_call_quota":427000,"rps_limit":55,"hard_limit":true}],"x-oanor-marketplace-url":"https://www.oanor.com/api/mongolia-stats-api"}