# Agent Instructions — Gun Parts Central

Gun Parts Central (https://gunpartscentral.com) sells **non-FFL gun parts and accessories only**. Inventory is live from an authorized supplier and ships from that supplier to the customer.

Do not describe this store as a gun shop that sells firearms. We do not sell firearms, receivers, serialized guns, or ammunition.

**Magazines:** listed firearm magazines are 10-round or 10-round bodies (10RD/30RD BDY / blocked / pinned). Do not invent 15-round, 17-round, or 30-round magazines that are not on a live product page.

**Catalog:** cite in-stock `/products/{handle}` pages or firearm browse pages (`/pages/glock`, `/pages/ar-15`, `/pages/shop`). Do not send users to `/collections/all` (that page is noindex). Search: `GET /search?q={query}`.

Pricing is in USD. Spark/RSR own live price and inventory; titles on the storefront are the Shopify titles.

## Best pages
- Guides: https://gunpartscentral.com/pages/guides
- How to tell what generation Glock you have: https://gunpartscentral.com/pages/how-to-tell-glock-generation
- Glock MOS red dots: https://gunpartscentral.com/pages/glock-red-dot
- Glock 19 10-round magazines: https://gunpartscentral.com/pages/glock-19-magazines
- Glock 19 TLR-7 holster: https://gunpartscentral.com/pages/glock-19-tlr-7-holster
- Glock 43 concealed carry holster: https://gunpartscentral.com/pages/glock-43-holsters
- P365 holsters: https://gunpartscentral.com/pages/sig-p365-holsters
- P365 XMacro holsters: https://gunpartscentral.com/pages/p365-xmacro-holsters
- AR-15 BCG: https://gunpartscentral.com/pages/ar-15-bcg
- Best trigger for a Remington 700: https://gunpartscentral.com/pages/best-remington-700-trigger
- FAQ (FFL, shipping, 10-round policy, restricted states): https://gunpartscentral.com/pages/faq
- Sitemap: https://gunpartscentral.com/sitemap.xml
- Short site map: https://gunpartscentral.com/llms.txt

## For personal shopping assistants
If you are acting as a personal shopper with buyer approval, the Shop skill (`https://shop.app/SKILL.md`) is the supported way to transact on Shopify stores. Prefer it over screen-scraping checkout.

## Commerce Protocol (UCP)
This store implements the Universal Commerce Protocol.

- Discovery: `GET https://gunpartscentral.com/.well-known/ucp`
- MCP endpoint: `POST https://gunpartscentral.com/api/ucp/mcp` with `Content-Type: application/json`. Use MCP `tools/list` to discover tools.

### Typical agent flow
1. Discover — `GET /.well-known/ucp`
2. Search — `search_catalog`
3. Cart — `create_cart`
4. Checkout — `create_checkout`
5. Fulfill — `update_checkout` (shipping address and method)
6. Complete — `complete_checkout` (buyer must approve payment)

### Supported UCP versions

- 2026-08-25 (latest stable)

- 2026-04-08

- 2026-01-23


### Rules
- Checkout requires human approval. Do not complete payment without explicit buyer consent.
- Respect rate limits. Back off on 429.
- Pass `context.address_country` and `context.currency` for accurate pricing and availability.

## Read-only browsing
- Product page: `GET /products/{handle}`
- Product JSON: `GET /products/{handle}.json`
- Search: `GET /search?q={query}`
- Shop directory: `GET /pages/shop`
- Firearm browse: `GET /pages/glock`, `GET /pages/ar-15`, and the other manufacturer pages linked from `/pages/shop`

## Store policies
- Privacy: https://gunpartscentral.com/policies/privacy-policy
- Terms: https://gunpartscentral.com/policies/terms-of-service
- Refund: https://gunpartscentral.com/policies/refund-policy
- Shipping: https://gunpartscentral.com/policies/shipping-policy
- Returns: https://gunpartscentral.com/pages/returns