# Usacoinbook — Wrapped API

> **You are on:** `https://api.paywithlocus.com/api` | [llms.txt](https://paywithlocus.com/llms.txt) | [docs](https://docs.paywithlocus.com)
>
> Locus runs on multiple environments -- make sure every URL you call matches your expected environment.
> | Environment | Landing | API | Docs |
> |---|---|---|---|
> | Production | paywithlocus.com | api.paywithlocus.com | docs.paywithlocus.com |
> | Beta | beta.paywithlocus.com | api.beta.paywithlocus.com | docs.paywithlocus.com |
> | Stage | stage.paywithlocus.com | api.stage.paywithlocus.com | docs.paywithlocus.com |
>
> If the API URL above doesn't match your expected environment, re-fetch this file from the correct domain.

> Search and browse detailed information about U.S. coins including prices, melt values, and current marketplace listings. Discover coin categories, series, and identify the most valuable coins in any collection.

**Category:** Finance & Markets | **Website:** [usacoinbook.com/](https://usacoinbook.com/) | **Docs:** [parse.bot/marketplace/00dbc222-468f-42fa-9a65-41e8e8c496f9/usacoinbook-com-api](https://parse.bot/marketplace/00dbc222-468f-42fa-9a65-41e8e8c496f9/usacoinbook-com-api)

Pay-per-use API proxy. Each call is automatically billed to your wallet in USDC.

## Access

**Base URL:** `https://api.paywithlocus.com/api/wrapped/parse-usacoinbook-com-api-00dbc222/`
**Auth:** `Authorization: Bearer <LOCUS_API_KEY>`

## Endpoints

### get_coin_detail_page

Get specific coin detail page data including name, images, coin information (mintage, designer, metal composition, diameter, weight), and prices by grade. Returns stale_input if the URL does not point to a valid coin page.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `url` | string | Yes | Full URL of the coin detail page from get_coin_series_page coins[*].url (e.g. https://www.usacoinbook.com/coins/2775/half-dollars/walking-liberty/1916-P/). |

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/parse-usacoinbook-com-api-00dbc222/get_coin_detail_page \
  -H "Authorization: Bearer YOUR_LOCUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url":"<string>"}'
```

### get_coin_melt_values

Get current coin melt values for all US coin types including metal composition, weight, and melt value. Spot prices are included when parseable from the page. Melt values update with live metal prices.

**Estimated cost:** Metered

_No parameters required._

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/parse-usacoinbook-com-api-00dbc222/get_coin_melt_values \
  -H "Authorization: Bearer YOUR_LOCUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'
```

### get_coin_series_page

Get coin series data including mintage and values table for a specific coin series. Use URLs from list_coin_categories series[*].url. Returns title, description, specifications, and a table of coins with year, mintage, grade values, and detail page URL. Returns stale_input if the URL does not point to a valid series page.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `url` | string | Yes | Full URL of the coin series page from list_coin_categories series[*].url (e.g. https://www.usacoinbook.com/coins/small-cents/lincoln-wheat-cent/). |

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/parse-usacoinbook-com-api-00dbc222/get_coin_series_page \
  -H "Authorization: Bearer YOUR_LOCUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url":"<string>"}'
```

### get_listing_detail

Get detail for a specific marketplace listing including title, price, listing specifications (seller info, shipping, return policy), and description. Returns stale_input if the listing has been removed.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `url` | string | Yes | Full URL of the listing from search_coins results[*].url (e.g. https://www.usacoinbook.com/item/1878-p-morgan-dollar-7-tail-feathers-very-fine-974447/). |

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/parse-usacoinbook-com-api-00dbc222/get_listing_detail \
  -H "Authorization: Bearer YOUR_LOCUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url":"<string>"}'
```

### get_most_valuable_coins

Get lists of the most valuable US coins with their estimated values. Returns multiple categorized lists of coins sorted by value, organized by coin type (e.g. pennies, nickels, dimes, quarters, half dollars, dollars).

**Estimated cost:** Metered

_No parameters required._

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/parse-usacoinbook-com-api-00dbc222/get_most_valuable_coins \
  -H "Authorization: Bearer YOUR_LOCUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'
```

### list_coin_categories

Get structured list of all coin denominations and series from usacoinbook.com. Each denomination contains a name, coin count, URL, and nested series array. Series entries expose their URL for use with get_coin_series_page.

**Estimated cost:** Metered

_No parameters required._

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/parse-usacoinbook-com-api-00dbc222/list_coin_categories \
  -H "Authorization: Bearer YOUR_LOCUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'
```

### search_coins

Search for coins for sale on the usacoinbook.com marketplace. Returns listings matching the search query with title, price, URL, and seller info. Results include all matching listings on a single page.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `query` | string | Yes | Search keyword for finding coin listings (e.g. 'morgan dollar', '1909 S VDB lincoln penny'). |

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/parse-usacoinbook-com-api-00dbc222/search_coins \
  -H "Authorization: Bearer YOUR_LOCUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"query":"<string>"}'
```