bullionapi.dev valid
Bullion API
Bullion API is a precious metals prices API for developers, with available daily historical closes, `X-API-Key` auth and monthly request quotas. Hosted on Cloudflare Workers.
- Authority
- 45 reach 0 · trust 5 · quality 25 · freshness 15
- Tier
- listed
- llms.txt
- http://api.bullionapi.dev/llms.txt
- llms-full.txt
- http://api.bullionapi.dev/llms-full.txt
- Sections
- 3
- Links
- 25
- Size
- 12314 bytes
- Country
- — Publisher location unknown; CDN address excluded
- Country evidence
- No published address evidence collected yet
- For agents
- Documentation: developer or product docs worth reading, nothing to call
- First seen
- 2026-10-27T09:49:24.940Z
- Last checked
- 2026-10-27T09:49:33.600Z
- Badge
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-27T09:49:24.946Z. Cached copy · Source on bullionapi.dev
# Bullion API
> Bullion API is a precious metals prices API for developers, with available daily historical closes, `X-API-Key` auth and monthly request quotas. Hosted on Cloudflare Workers.
Build indicative valuations, reference displays and charts from metal prices. Metal observations refresh hourly; projected currencies use an accepted daily FX snapshot. These estimates are not executable checkout prices or binding quotes and must not be used for trading or settlement.
- Base URL: `https://api.bullionapi.dev`
- Metering: A market-data request consumes one monthly request once it passes authentication and quota checks and reaches endpoint execution, even if it returns a validation error, missing data or a controlled service error. Repeated calls and retries each count; there is no automatic refund. Requests rejected before this point do not consume monthly allowance.
- Auth: `X-API-Key: bullion_<key>` header is the canonical and preferred transport; clients that cannot set custom headers may use the `api_key` query parameter as a fallback
- Security: Query credentials may appear in browser history, copied URLs, referrers, intermediary infrastructure, and logs. Use the X-API-Key header whenever your client supports custom headers. Query authentication does not enable cross-origin browser fetch; CORS remains separate. If both transports are supplied, they must match; differing values return HTTP 401 with code `conflicting_credentials`.
- Free tier: 30 requests / month, no credit card, non-commercial API use only
- Pricing: Pro is $9 USD/month; Business is $29 USD/month. Annual list prices are $90 USD/year for Pro and $290 USD/year for Business. Annual list prices do not establish checkout availability. New annual subscriptions are offered only when annual checkout is enabled; check the billing options shown on the pricing page. Request quotas still reset monthly, and existing annual subscriptions retain their billing interval.
- Refunds: Within 14 days of the first payment on a new Pro or Business subscription, the customer can request a full refund whether that payment is monthly or yearly. Later renewals and unused time in a billing period are not automatically refunded, except where required by law or manually approved.
- Usage rights: Free and Pro are for non-commercial use of the Bullion API Service only. Business includes commercial display and integration. Standard plans do not permit redistribution of raw or substantially equivalent market-price data or redistribution or resale of API access. Where the source grants reuse or redistribution rights in particular public statistics, those rights remain unaffected by plan and are subject to the source terms. See https://bullionapi.dev/terms.
- Endpoints: `/v1/{metal}/price` (per-metal latest price, or daily weekday closes with `start`/`end`), `/v1/{metal}/change`, `/v1/gold/carat`, `/v1/gold-silver-ratio`, `/v1/gold/moving-average`, `/v1/gold/volatility`, `/v1/gold/drawdown` (gold technical
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