Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add vinayaklatthe/microsoft-security-skills --skill entra-external-idgit clone --depth 1 https://github.com/vinayaklatthe/microsoft-security-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/entra-external-id)<a href="https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/entra-external-id"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/entra-external-id/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/entra-external-id"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/entra-external-id.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00248 | $0.02206 |
| Opus 5 | $0.00124 | $0.01103 |
| Sonnet 5 | $0.00050 | $0.00441 |
| Haiku 4.5 | $0.00025 | $0.00221 |
Grade A, and why
entra-external-id scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 162 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Microsoft Entra External ID
Entra External ID is Microsoft's unified platform for identities outside your workforce:
- Customer identity (CIAM) in a dedicated external tenant — successor to Azure AD B2C for new deployments.
- Business partner collaboration (B2B) in your workforce tenant — guests, B2B direct connect, cross-tenant access settings.
Both are managed in the same admin surface and use the same Conditional Access engine.
When to use
- Authenticating customers / consumers into your apps with social or email sign-up.
- Replacing Azure AD B2C (Microsoft's stated path for new CIAM deployments).
- Inviting and governing external partners as B2B guests with Conditional Access.
- Configuring cross-tenant access for federated partner organizations.
Do not use this skill for employee identity (entra-id), workforce lifecycle
governance (entra-id-governance), or workforce CA policy authoring
(conditional-access-mfa).
External tenant vs workforce tenant — choose first
| Scenario | Tenant type |
|---|---|
| Public-facing consumer app, social/email sign-up, custom-branded sign-in | External tenant (CIAM) |
| Partner companies' employees collaborating in Teams/SharePoint/Apps | Workforce tenant (B2B guests, cross-tenant access) |
| Both | Separate external tenant + your existing workforce tenant |
Rule of thumb: never mix customers and employees in the same workforce tenant — licensing, branding, lifecycle, and CA scoping all diverge fast.
Approach
External tenant (CIAM)
-
Create the external tenant (separate from your workforce tenant). Pick region; data residency is tenant-fixed.
-
Register your customer app in the external tenant. SDKs: MSAL for web/SPA/mobile, plus native integrations.
-
Author user flows. Built-in flows cover the common cases: sign-up/sign-in, password reset, profile edit. Configure:
- Identity providers (email + password, email OTP, Google, Facebook, Apple, generic OIDC, SAML).
- Passkey support (preview/GA per region) — passwordless from day one.
- Custom attributes you want to collect.
- Branding (logo, colors, custom CSS/HTML for sign-in page).
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 162 lines · 248 tokens per session scan A 922f39a21821
entra-external-id is a skill published in the GitHub repository vinayaklatthe/microsoft-security-skills (173 stars, last pushed 2mo ago), licensed MIT. It adds 248 tokens to every session and 2,206 once invoked, about $0.0012 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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