acp-delegate-authentication SKILL.md skillA
acp-delegate-authentication 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-delegate-authentication@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-delegate-authentication/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260914.08f85a3, committed Sep 14, 2026
- Size
- 4,989 bytes
- Repository stars
- 40
- License
- MIT
Implement the ACP Delegate Authentication API — delegating 3D Secure (3DS2) consumer authentication to merchant-specified providers, covering session creation, fingerprint and challenge actions, the authenticate call, and status handling. Use when adding strong customer authentication or 3DS to an ACP 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 Delegate Authentication (3DS) ## Before writing code **Fetch live spec** — this API arrived in the `2026-04-17` release: 1. Fetch `https://github.com/agentic-commerce-protocol/agentic-commerce-protocol/releases` for the current spec version. 2. Fetch `spec/<version>/openapi/openapi.delegate_authentication.yaml` — authoritative for paths, request fields, statuses, and headers. 3. Fetch `spec/<version>/json-schema/schema.delegate_authentication.json` for the schemas. 4. Read `acp-delegated-payment` alongside this — authentication and payment delegation are separate but adjacent flows. This API handles **card data and authentication outcomes**. Implement it from the live spec, never from memory or an example found elsewhere. ## Conceptual Architecture ### What it delegates Consumer authentication — specifically **3D Secure 2** browser-based flows — to a **merchant-specified authentication provider**. The agent does not perform 3DS itself; it drives a provider that does, and carries the result back into checkout. Note the server in the spec is the *authentication provider*, not the seller. This is a distinct party from the merchant endpoints in `acp-checkout-rest`. …
Read the whole file at its exact version.
How to install
mdr add orcaqubits/agentic-commerce-skills-plugins/acp-delegate-authentication@sha256:22be7eb13506d50aThe 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_7zxuhdi7lyegbsia)
4 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 (4989 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_7zxuhdi7lyegbsia GET https://markdownregistry.com/api/v1/resolve?ref=orcaqubits/agentic-commerce-skills-plugins/acp-delegate-authentication GET https://markdownregistry.com/api/v1/blob/22be7eb13506d50a14e7df13d68f3be8e071753a627354f3796ac6edfb4a221a
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.