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sg-gov-corppass SKILL.md skillA

sg-gov-corppass from kyleoliveiro/sg-gov-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add kyleoliveiro/sg-gov-skills/sg-gov-corppass@git:20261027.6f21efa

Pins git:20261027.6f21efa in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: kyleoliveiro/sg-gov-skills
Path: skills/sg-gov-corppass/SKILL.md
Versions recorded: 1
Latest version: git:20261027.6f21efa, committed Oct 27, 2026
Size: 13,726 bytes
Repository stars: 17
License: MIT

Integrate Corppass (business-user login and Myinfo Business corporate data) into a Singapore government digital service using the Corppass Authorization API (FAPI 2.0). Use this whenever a service lets companies or other entities transact with an agency: "log in with Corppass", business user login, UEN, entity roles and e-service authorisation, third-party service providers (tax agents, corp secretaries), Myinfo Business pre-fill of ACRA/IRAS/CPF corporate data, Corppass Developer Portal…

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

# Corppass: business-user login and Myinfo Business (FAPI 2.0)

Corppass is the Singapore Government's corporate **authorisation** system. It is not a
login credential anymore: **authentication is Singpass** (the user logs in with the
Singpass app as a "Business User"); Corppass supplies the entity and role context:
which company the user acts for, and what they are allowed to do. Get this model right
first; the two most costly integration mistakes come from getting it wrong:

1. Treating the ID token `sub` as the person. In FAPI 2.0 **`sub` is always the
   entity** (UEN, or Corppass Entity ID for non-UEN entities). The acting user lives in
   `act.sub` as a UUID.
2. Treating "user can't log in" as a code bug. Most of the time the user authenticated
   fine but their entity's **Corppass Admin never assigned them to your e-service**.
   That is a provisioning problem, and no code change fixes it.

Two products use one API, onboarded on **different portals**:

| Product | What it gives you | Onboard via |
|---|---|---|
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add kyleoliveiro/sg-gov-skills/sg-gov-corppass@sha256:1f18aaa13f4e32bf

The line at the top of this page pins the label git:20261027.6f21efa, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_6thx63wlko5suewn.svg)](https://markdownregistry.com/a/art_6thx63wlko5suewn)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 27, 2026.

version	committed	commit	size	audit
git:20261027.6f21efa latest	2026-10-27	6f21efa	13,726 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (13726 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

GitHub

kyleoliveiro/sg-gov-skills · 17 stars · license MIT · pushed 2026-11-02 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_6thx63wlko5suewn
GET https://markdownregistry.com/api/v1/resolve?ref=kyleoliveiro/sg-gov-skills/sg-gov-corppass
GET https://markdownregistry.com/api/v1/blob/1f18aaa13f4e32bf300c9306a9d42d84e9d502e27a97ba305ed47702db194025

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.