acp-cart SKILL.md skillA
acp-cart from orcaqubits/agentic-commerce-skills-plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add orcaqubits/agentic-commerce-skills-plugins/acp-cart@git:20260914.08f85a3Pins git:20260914.08f85a3 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- orcaqubits/agentic-commerce-skills-plugins
- Path
acp-agentic-commerce/skills/acp-cart/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260914.08f85a3, committed Sep 14, 2026
- Size
- 4,006 bytes
- Repository stars
- 40
- License
- MIT
Implement the ACP Cart API — the pre-checkout REST surface for collecting line items without payment configuration, covering create, retrieve, full-replacement update, and cancel, plus estimated totals, `continue_url`, and expiry. Use when building ACP cart sessions ahead of an agentic checkout.
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
# ACP Cart API ## Before writing code **Fetch live spec** — the Cart API arrived in the `2026-04-17` release, so anything older will not describe it: 1. Fetch `https://github.com/agentic-commerce-protocol/agentic-commerce-protocol/releases` to identify the **current** spec version. 2. Fetch the OpenAPI document for that version: `spec/<version>/openapi/openapi.cart.yaml` in the repo. This is authoritative for paths, headers, and status codes. 3. Fetch `spec/<version>/json-schema/schema.cart.json` for the Cart object schema. 4. Web-search `site:developers.openai.com commerce cart` for narrative guidance. Never write the request/response shapes from memory — read the OpenAPI document. ## Conceptual Architecture ### What Cart is for A **lightweight pre-checkout phase for item collection**, with: - no payment configuration, - no capability negotiation, - no status lifecycle. Checkout carries all of that. Cart deliberately carries none of it, so an agent can assemble a basket cheaply while the buyer is still deciding. ### Endpoints | Method | Path | Operation | |--------|------|-----------| | `POST` | `/carts` | `createCart` — returns **201** | …
Read the whole file at its exact version.
How to install
mdr add orcaqubits/agentic-commerce-skills-plugins/acp-cart@sha256:96412c56c67c1bdeThe line at the top of this page pins the label git:20260914.08f85a3, 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_nh42ojm5beoguxg2)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 14, 2026.
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 (4006 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
orcaqubits/agentic-commerce-skills-plugins · 40 stars · license MIT · pushed 2026-09-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nh42ojm5beoguxg2 GET https://markdownregistry.com/api/v1/resolve?ref=orcaqubits/agentic-commerce-skills-plugins/acp-cart GET https://markdownregistry.com/api/v1/blob/96412c56c67c1bdef516c007183b1e5cdac0af524a1d4916a7a5062abcb82f06
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.