# Daily Reference Rate series — paid plans, billed per month of range

**GET /api/v1/reference-rate/history**

AllRatesToday Daily Reference Rate: one immutable mid-market USD table per business day, fixed at 16:00 Europe/London as the per-currency median of five once-a-minute samples (15:57:30–16:02:30). Never revised. Not the WM/Refinitiv fix and not a registered benchmark; for index calculation, research and reporting. Methodology: https://allratestoday.com/reference-rate/ One point per published business day. Billed one API call per month of range.


## Servers
- Production: https://allratestoday.com (Production)


## Authentication methods
- Bearer auth


## Parameters


### Query parameters

- **symbol** (string)
  Quote currency per 1 USD (or give source+target).

- **source** (string)
  With target: one pair, cross-computed via USD and flagged derived.

- **target** (string)

- **from** (string(date))

- **to** (string(date))

- **format** (string)
  Output format (default json).



## Responses
### 200
Series

#### Body: application/json (object)
- **base** (string)

- **quote** (string)

- **from** (string)

- **to** (string)

- **count** (integer)

- **points** (array[object])


### 403
Paid plan required


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