frontmcp-authorities SKILL.md skillA
frontmcp-authorities from agentfront/frontmcp is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add agentfront/frontmcp/frontmcp-authorities@git:20261011.3484b44Pins git:20261011.3484b44 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- agentfront/frontmcp
- Path
libs/skills/catalog/frontmcp-authorities/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261011.3484b44, committed Oct 11, 2026
- First version recorded
- Jun 5, 2026
- Size
- 28,453 bytes
- Repository stars
- 148
- License
- Apache-2.0
Use when implementing authorization and access control for FrontMCP tools, resources, prompts, or skills, deciding who may invoke what. Covers the RBAC, ABAC, and ReBAC models and when to choose each; JWT claims mapping per identity provider (Auth0, Keycloak, Okta, Cognito, Frontegg); reusable named authority profiles; and custom authority evaluators for domain-specific policy. This is about who-can-do-what (permissions, roles, scopes), distinct from configuring auth modes and login…
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
# FrontMCP Authorities
Built-in RBAC/ABAC/ReBAC authorization system for FrontMCP entry types. Each flow has native `checkEntryAuthorities` and `filterByAuthorities` stages that enforce access control policies declared via the `authorities` field on entry decorators. Configured via `@FrontMcp({ authorities: { claimsMapping, profiles, scopeMapping } })` — no plugin needed. Flow stages handle enforcement, and developers can hook into them with `Will`, `Did`, and `Around` decorators. Supports named profiles for reuse, JWT claims mapping for any identity provider, inline policies with roles/permissions/attributes/relationships, and composable combinators (`allOf`, `anyOf`, `not`).
## When to Use This Skill
### Must Use
- Adding role-based or permission-based access control to tools, resources, prompts, or skills
- Restricting MCP entry visibility based on the caller's JWT claims
- Enforcing tenant isolation (ABAC) or relationship checks (ReBAC) on entries
- Gating which skills a caller can discover and load (`@Skill({ authorities })`)
### Recommended
- Setting up a multi-tenant server where different tenants see different tools
…Read the whole file at its exact version.
How to install
mdr add agentfront/frontmcp/frontmcp-authorities@sha256:15df0c7581beb815The line at the top of this page pins the label git:20261011.3484b44, 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_lobvi2uysdihy5ut)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jun 5, 2026 and Oct 11, 2026, about one every 26 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261011.3484b44 latest | 2026-10-11 | 3484b44 | 28,453 B | A | view · diff |
| git:20261003.f260067 | 2026-10-03 | f260067 | 28,514 B | A | view · diff |
| git:20260928.9620a1a | 2026-09-28 | 9620a1a | 28,052 B | A | view · diff |
| git:20260927.9c8e369 | 2026-09-27 | 9c8e369 | 27,993 B | A | view · diff |
| git:20260925.afe212d | 2026-09-25 | afe212d | 26,543 B | A | view · diff |
| git:20260605.de54865 | 2026-06-05 | de54865 | 26,482 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 (28453 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
agentfront/frontmcp · 148 stars · license Apache-2.0 · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lobvi2uysdihy5ut GET https://markdownregistry.com/api/v1/resolve?ref=agentfront/frontmcp/frontmcp-authorities GET https://markdownregistry.com/api/v1/blob/15df0c7581beb8156e546112b05f8c3baebd851e44118cbb0c89b5b4041154d0
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.