# ECB EUR/FX Historical Rate Series > ECB EUR/FX Historical Rate Series is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19). Returns a time series of ECB euro foreign exchange reference rates for a given currency pair over up to 30 calendar days ## Facts - Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/eu/fx/history?utm_source=zero.xyz - Price: $0.002/call - Payment: x402 - Status: unknown - Last checked: 2026-10-19 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/ecb-eur-fx-historical-rate-series-906b5581 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nHg3xmE0B8ro_AL2dNjOw Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability ecb-eur-fx-historical-rate-series-906b5581 ``` Example prompt: Can you pull the ECB euro reference rates for EUR/USD over the last 10 days and tell me the min, max, and how much the rate has changed? ## When to prefer this Choose this endpoint when you need official ECB euro reference rates as a time series for research, analytics, or enrichment purposes — especially when you want the authoritative daily mid-market rate published by the European Central Bank rather than a real-time commercial feed. It is ideal for historical trend analysis, compliance documentation referencing official ECB rates, or enriching financial calculations with up to 30 days of daily EUR-based FX history. Not suitable for real-time trading rates or non-EUR base pairs. ## Known failure modes - Unsupported currency code returns an error or empty points array - days parameter outside 1-30 range is rejected by schema validation - ECB data not yet published for the current day causes stale=true flag - Weekend or TARGET holiday gaps result in fewer data points than requested days - Network or worker timeout returns a 5xx error ## How this service works Use for a short euro exchange rate history: daily ECB euro foreign exchange reference rates of one currency against EUR for up to the last 30 days (ccy=USD, days=1..30), with min, max and percent change over the window and a stale flag. Source attribution in every reply. Reference rates for information only, not transaction rates. $0.002 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay. ## Output A JSON object containing the EUR base, the quoted currency, the requested day count, an array of {date, rate} data points, the minimum and maximum rates over the period, the percentage change from first to last point, a staleness flag, the source name ('ECB euro foreign exchange reference rates'), the source URL, and a note about publication timing (around 16:00 CET on TARGET working days). ## Request schema (JSON Schema) ```json { "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "input" ], "properties": { "input": { "type": "object", "required": [ "type", "method" ], "properties": { "type": { "type": "string", "const": "http" }, "method": { "enum": [ "GET", "HEAD" ], "type": "string" }, "queryParams": { "type": "object", "properties": { "ccy": { "type": "string", "default": "USD", "pattern": "^[A-Z]{3}$", "description": "ISO 4217 currency quoted against EUR, e.g. USD, GBP, JPY" }, "days": { "type": "integer", "default": 30, "maximum": 30, "minimum": 1, "description": "calendar days back from the latest ECB publication" } } } }, "additionalProperties": false }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "type": "string" }, "example": { "type": "object", "required": [ "base", "ccy", "days", "points", "stale", "source", "sourceUrl" ], "properties": { "to": { "type": [ "string", "null" ] }, "ccy": { "type": "string" }, "max": { "type": [ "number", "null" ] }, "min": { "type": [ "number", "null" ] }, "base": { "type": "string" }, "days": { "type": "integer" }, "from": { "type": [ "string", "null" ] }, "note": { "type": "string" }, "count": { "type": "integer" }, "stale": { "type": "boolean" }, "points": { "type": "array", "items": { "type": "object", "required": [ "date", "rate" ], "properties": { "date": { "type": "string" }, "rate": { "type": "number" } } } }, "source": { "type": "string" }, "changePct": { "type": [ "number", "null" ] }, "sourceUrl": { "type": "string" }, "businessDaysOld": { "type": "integer" } } } } } } } ``` ## Response schema (JSON Schema) ```json { "type": "object", "required": [ "base", "ccy", "days", "from", "to", "count", "points", "min", "max", "changePct", "stale", "businessDaysOld", "source", "sourceUrl", "note" ], "properties": { "to": { "type": "string" }, "ccy": { "type": "string" }, "max": { "type": "number" }, "min": { "type": "number" }, "base": { "type": "string" }, "days": { "type": "number" }, "from": { "type": "string" }, "note": { "type": "string" }, "count": { "type": "number" }, "stale": { "type": "boolean" }, "points": { "type": "array", "items": { "type": "object", "properties": { "date": { "type": "string" }, "rate": { "type": "number" } } } }, "source": { "type": "string" }, "changePct": { "type": "number" }, "sourceUrl": { "type": "string" }, "businessDaysOld": { "type": "number" } } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ecb-eur-fx-historical-rate-series-906b5581/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev](https://www.zero.xyz/host/x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/llms.txt)