cratis-arc-authentication-authorization-and-identity SKILL.md skillA
cratis-arc-authentication-authorization-and-identity from cratis/ai is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cratis/ai/cratis-arc-authentication-authorization-and-identity@git:20261012.9e91c1ePins git:20261012.9e91c1e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cratis/ai
- Path
.cratis/ai/skills/cratis-arc-authentication-authorization-and-identity/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261012.9e91c1e, committed Oct 12, 2026
- First version recorded
- Oct 8, 2026
- Size
- 20,223 bytes
- Repository stars
- 4
- License
- MIT
Wire authentication, authorization and identity in a Cratis Arc application — IProvideIdentityDetails and the /.cratis/me endpoint, Arc's [Authorize]/[Roles]/[AllowAnonymous] attributes and named policies, fallback baselines, observable-query emission guards, IAuthenticationHandler, the Microsoft Identity Platform header contract and its ingress requirements, discovery and introspection exposure, tenant resolution, and the React identity hooks. Use for Arc identity providers, endpoint…
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
# Authentication, authorization and identity in Arc Arc separates three things that are easy to conflate: **authentication** decides who the caller is, **authorization** decides whether that caller may run this command or query, and the **identity provider** decides what the frontend is told about them. Each has its own extension point. ## Verified product sources | Package | Version | Purpose | | --- | --- | --- | | `Cratis.Arc.Core` | `22.75.0` | `Cratis.Arc.Identity`, `Cratis.Arc.Authorization`, `Cratis.Arc.Authentication`, `Cratis.Arc.Tenancy` | | `Cratis.Arc` | `22.75.0` | ASP.NET Core hosting, `AddMicrosoftIdentityPlatformIdentityAuthentication` | | `@cratis/arc` | `22.75.0` | `IdentityProvider`, `IIdentity` | | `@cratis/arc.react` | `22.75.0` | `IdentityProvider` component, `useIdentity`, `RequireRole` | | Cratis AuthProxy (`cratis/authproxy`) | `v2.30.5` | the trusted ingress described in [AuthProxy](references/authproxy.md) | > Rechecked at Arc v22.75.0 against the source-pinned authentication, identity, …
Read the whole file at its exact version.
How to install
mdr add cratis/ai/cratis-arc-authentication-authorization-and-identity@sha256:9352444ef84b2d1aThe line at the top of this page pins the label git:20261012.9e91c1e, 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_4sofhfvmxqnvy4ck)
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Versions
The registry has recorded 5 versions of this file, between Oct 8, 2026 and Oct 12, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261012.9e91c1e latest | 2026-10-12 | 9e91c1e | 20,223 B | A | view · diff |
| git:20261012.1578108 | 2026-10-12 | 1578108 | 19,850 B | A | view · diff |
| git:20261012.c4b6c7f | 2026-10-12 | c4b6c7f | 20,327 B | A | view · diff |
| git:20261008.2ef168e | 2026-10-08 | 2ef168e | 19,954 B | A | view · diff |
| git:20261008.34c5e59 | 2026-10-08 | 34c5e59 | 19,784 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 (20223 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
cratis/ai · 4 stars · license MIT · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4sofhfvmxqnvy4ck GET https://markdownregistry.com/api/v1/resolve?ref=cratis/ai/cratis-arc-authentication-authorization-and-identity GET https://markdownregistry.com/api/v1/blob/9352444ef84b2d1aa7215f3f6b1e2a5310463c90926e697ef0bd05ad9bf2239b
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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.