summer-store SKILL.md skillA
summer-store from summerengine/summer is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add summerengine/summer/summer-store@git:20261018.b6397b2Pins git:20261018.b6397b2 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- summerengine/summer
- Path
library/skills/summer-store/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261018.b6397b2, committed Oct 18, 2026
- First version recorded
- Oct 16, 2026
- Size
- 28,604 bytes
- Repository stars
- 86
- License
- MIT
Sell Summer items for Sparks: shop, checkout, item slugs, bundles and sales, owned items, summer.items.json sync, authority checks.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# /summer-store — sell items, check what players own
## Overview
Players pay with **Sparks**, Summer's currency. Your game never touches money,
balances or approval:
1. The client lists your published offers with `Summer.client.store.list_items()`.
2. The player presses Buy. The client asks for a checkout with offer ids and quantities, never prices.
3. The Summer app shows its own purchase sheet. The player approves or declines there.
4. Summer charges the Sparks and issues the item into the player's **inventory**.
5. The game sees the item in `Summer.client.items` (client) and `Summer.authority.items` (authority).
The ids, kept apart:
| Id | Where it comes from | Use it for |
| --- | --- | --- |
| Slug ("Item key" in Studio) | You choose it, e.g. `party_hat`; the same in staging and production | Recognizing an item in game code |
| Definition id | Summer assigns it (`item_…`); **differs between staging and production** | The same, on Summer versions without the slug getters |
| Offer id | `item.price.offer_id` in the store listing | `SummerCheckoutLine.create(offer_id, quantity)` |
…Read the whole file at its exact version.
How to install
mdr add summerengine/summer/summer-store@sha256:a315f6eda13d2439The line at the top of this page pins the label git:20261018.b6397b2, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_gwsuvyq2iu4flw7e)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Oct 16, 2026 and Oct 18, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261018.b6397b2 latest | 2026-10-18 | b6397b2 | 28,604 B | A | view · diff |
| git:20261017.9fca4b8 | 2026-10-17 | 9fca4b8 | 25,695 B | A | view · diff |
| git:20261017.351ac06 | 2026-10-17 | 351ac06 | 25,593 B | A | view · diff |
| git:20261017.7bda4a3 | 2026-10-17 | 7bda4a3 | 24,118 B | A | view · diff |
| git:20261016.e9d6e70 | 2026-10-16 | e9d6e70 | 13,339 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (28604 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
summerengine/summer · 86 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gwsuvyq2iu4flw7e GET https://markdownregistry.com/api/v1/resolve?ref=summerengine/summer/summer-store GET https://markdownregistry.com/api/v1/blob/a315f6eda13d24394ebeb85971b4502c6b3a227536096fe69d37e23245199048
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.