ap2-challenge-stepup SKILL.md skillA
ap2-challenge-stepup 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/ap2-challenge-stepup@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
ap2-agentic-payments/skills/ap2-challenge-stepup/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260914.08f85a3, committed Sep 14, 2026
- First version recorded
- Mar 9, 2026
- Size
- 5,165 bytes
- Repository stars
- 40
- License
- MIT
Implement AP2 challenge and step-up flows — 3DS2, OTP verification, redirect challenges, and trusted surface interactions. Use when building additional authentication steps during agentic payment processing.
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
# AP2 Challenge and Step-Up Flows ## Before writing code **Fetch live docs**: 1. Fetch `https://ap2-protocol.org/ap2/specification/` for challenge flow specification 2. Web-search `site:github.com google-agentic-commerce AP2 challenge OTP 3DS step-up` for implementation examples 3. Fetch `https://ap2-protocol.org/ap2/security_and_privacy_considerations/` for security context 4. Web-search `ap2 protocol 3DS2 OTP challenge redirect` for integration details ## Conceptual Architecture ### What Challenges Are Challenges are **additional authentication steps** that any participant in the payment ecosystem can require during an AP2 transaction. They provide an extra layer of security beyond the mandate signatures. ### When Challenges Occur Any ecosystem participant may trigger a challenge: - **Payment Network** — Requires 3DS2 for high-risk transactions - **Issuer/Bank** — Requires OTP or biometric for verification - **Merchant** — Requires confirmation for unusual orders - **Credentials Provider** — Requires step-up for new payment methods ### Supported Challenge Types …
Read the whole file at its exact version.
How to install
mdr add orcaqubits/agentic-commerce-skills-plugins/ap2-challenge-stepup@sha256:aa504564047d8789The 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_to3mz6gqkwdc5emw)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Mar 9, 2026 and Sep 14, 2026, about one every 189 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260914.08f85a3 latest | 2026-09-14 | 08f85a3 | 5,165 B | A | view · diff |
| git:20260309.786511c | 2026-03-09 | 786511c | 4,634 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 (5165 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_to3mz6gqkwdc5emw GET https://markdownregistry.com/api/v1/resolve?ref=orcaqubits/agentic-commerce-skills-plugins/ap2-challenge-stepup GET https://markdownregistry.com/api/v1/blob/aa504564047d87895e0a5700af4d5630ef0fc7721481372156d6814164b9acd5
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.