# BYMA Argentina Stock Exchange API > Live data from BYMA (Bolsas y Mercados Argentinos), the Argentine exchange, with no key. Read the live value of every BYMA index — the S&P MERVAL, the S&P BYMA General and the BYMA CEDEAR index among them — with level, change and VWAP; look up a single index; pull the public-bond market with prices, maturities and days-to-maturity (Argentine sovereign and public bonds); and look up a single bond. The Argentina-equities-index / sovereign-bond layer for trading dashboards, screeners and research — distinct from other exchange readers, this is BYMA index and bond data. Live from the BYMA free API; short cache only. ## Authentication All requests require your oanor API key in the `x-oanor-key` header. Get one at https://www.oanor.com/developer/keys. ```bash curl -H "x-oanor-key: oanor_live_…" "https://api.oanor.com/byma-api/..." ``` ## Pricing - **Free** (Free) — 15,000 calls/Mo, 3 req/s - **Starter** ($18/Mo) — 300,000 calls/Mo, 8 req/s - **Pro** ($47/Mo) — 1,650,000 calls/Mo, 20 req/s - **Enterprise** ($112/Mo) — 8,400,000 calls/Mo, 60 req/s ## Endpoints ### Indices #### `GET /v1/index` — A single BYMA index by symbol **Parameters:** - `symbol` (query, required, string) — Index symbol, e.g. M (S&P MERVAL), G (BYMA General) Example: `M` **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/byma-api/v1/index?symbol=M" ``` **Response:** ```json { "data": { "note": "One BYMA index by symbol — level, previous close, percent change, day high/low and VWAP. Pass symbol (e.g. M for the S&P MERVAL).", "index": { "low": 3341045.1, "high": 3390505.03, "name": "S&P MERVAL", "vwap": 0, "value": 3352707.61, "symbol": "M", "change_percent": -0.01, "previous_close": 3353007.69 }, "source": "BYMA" }, "meta": { "timestamp": "2026-06-15T02:11:00.138Z", "request_id": "0d8548c2-1561-40a1-99ae-143d420eb02e" }, "status": "ok", "message": "Index retrieved successfully", "success": true } ``` #### `GET /v1/indices` — Every BYMA index (MERVAL & more) **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/byma-api/v1/indices" ``` **Response:** ```json { "data": { "note": "The live value of every BYMA index — the S&P MERVAL, the S&P BYMA General, the BYMA CEDEAR index and the sector indices — each with its level, previous close, percent change, day high/low and VWAP. The pulse of the Argentine market.", "count": 16, "source": "BYMA", "indices": [ { "low": 141278473.77, "high": 143754571.52, "name": "S&P BYMA Indice General", "vwap": 0, "value": 141818825.8, "symbol": "G", "change_percent": -0.29, "previous_close": 142230571.66 }, { "low": 3341045.1, "high": 3390505.03, "name": "S&P MERVAL", "vwap": 0, "value": 3352707.61, "symbol": "M", "change_percent": -0.01, "previous_close": 3353007.69 }, { "low": 46513.21, "high": 47786.76, "name": "S&P BYMA Construccion", "vwap": 0, "value": 46932.33, "symbol": "SPBYCAP", "change_percent": -0.15, "previous_close": 47004.99 }, { "low": 41699.69, "high": 42555, "name": "S&P BYMA CEDEAR Index", "vwap": 0, "valu …(truncated, see openapi.json for full schema) ``` ### Bonds #### `GET /v1/bond` — A single public bond by symbol **Parameters:** - `symbol` (query, required, string) — Bond symbol, e.g. AE38, GD30 Example: `AE38` **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/byma-api/v1/bond?symbol=AE38" ``` **Response:** ```json { "data": { "bond": { "name": null, "vwap": 120873.5100931, "price": 120700, "symbol": "AE38", "currency": "ARS", "day_high": 121700, "trade_volume": 3747516, "maturity_date": "2038-01-09", "opening_price": 120000, "previous_close": 120490, "days_to_maturity": 4227 }, "note": "One BYMA public bond by symbol — price, previous close, opening price, day high, VWAP, volume, maturity date and days to maturity. Pass symbol (e.g. AE38, GD30).", "source": "BYMA" }, "meta": { "timestamp": "2026-06-15T02:11:00.945Z", "request_id": "5544576a-9eb9-41e8-b75a-8e72d29d6f82" }, "status": "ok", "message": "Bond retrieved successfully", "success": true } ``` #### `GET /v1/bonds` — The public-bond market **Parameters:** - `sort` (query, optional, string) — symbol (default), volume or maturity Example: `maturity` - `limit` (query, optional, string) — Results (1-200, default 50) Example: `50` - `offset` (query, optional, string) — Pagination offset Example: `0` **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/byma-api/v1/bonds?sort=maturity&limit=50&offset=0" ``` **Response:** ```json { "data": { "note": "The BYMA public-bond market — Argentine sovereign and public bonds, each with its price, previous close, opening price, day high, VWAP, volume, maturity date and days to maturity. Sort by symbol (default), volume or maturity; page with offset and limit (max 200).", "sort": "maturity", "bonds": [ { "name": null, "vwap": 0, "price": 104, "symbol": "BL26X", "currency": "ARS", "day_high": 0, "trade_volume": 0, "maturity_date": "2026-07-14", "opening_price": 0, "previous_close": 104, "days_to_maturity": 30 }, { "name": null, "vwap": 1, "price": 0, "symbol": "BL2L6.SB", "currency": "ARS", "day_high": 0, "trade_volume": 0, "maturity_date": "2026-07-17", "opening_price": 0, "previous_close": 0, "days_to_maturity": 33 }, { "name": null, "vwap": 0, "price": 133246.8103, "symbol": "AL03A", "currency": "ARS", "day_high": 0, "trade_volume": 0, "maturity_date": "2026-09-08", "opening_price": 0, …(truncated, see openapi.json for full schema) ``` ### Meta #### `GET /v1/meta` — Endpoints & source **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/byma-api/v1/meta" ``` **Response:** ```json { "data": { "sample": { "merval": 3352707.61 }, "source": "BYMA public free market API (open.bymadata.com.ar), keyless", "service": "byma-api", "endpoints": { "GET /v1/bond": "One public bond by symbol (symbol).", "GET /v1/meta": "This document.", "GET /v1/bonds": "The public-bond market (sort, limit).", "GET /v1/index": "One index by symbol (symbol).", "GET /v1/indices": "Every BYMA index (MERVAL, BYMA General, CEDEAR…)." }, "description": "Live data from BYMA (Bolsas y Mercados Argentinos) with no key: the live value of every BYMA index (S&P MERVAL, S&P BYMA General, CEDEAR index and sector indices), a single index lookup, the public-bond market with prices and maturities (Argentine sovereign and public bonds), and a single bond lookup. The Argentina-equities-index / sovereign-bond layer for trading dashboards and screeners. Distinct from other exchange readers — BYMA index and bond data. Live, short cache only.", "upstream_status": "ok" }, "meta": { "timestamp": "2026-06-15T02:11:01.117Z", "request_id": "9e6e9423-5394-45d2-86c0-94de3063aeeb" }, "status": "ok", "message": "Meta", "success": true } ``` --- Marketplace page: https://www.oanor.com/api/byma-api OpenAPI spec: https://www.oanor.com/api/byma-api/openapi.json