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 RedHatProductSecurity/prodsec-skills --skill external-idp-integrationgit clone --depth 1 https://github.com/RedHatProductSecurity/prodsec-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/redhatproductsecurity/prodsec-skills/external-idp-integration)<a href="https://agentmods.dev/skills/redhatproductsecurity/prodsec-skills/external-idp-integration"><img src="https://agentmods.dev/badge/skills/redhatproductsecurity/prodsec-skills/external-idp-integration/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/redhatproductsecurity/prodsec-skills/external-idp-integration"><img src="https://agentmods.dev/badge/skills/redhatproductsecurity/prodsec-skills/external-idp-integration.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 | $0.00036 | $0.00482 |
| Opus 5 | $0.00018 | $0.00241 |
| Sonnet 5 | $0.00007 | $0.00096 |
| Haiku 4.5 | $0.00004 | $0.00048 |
Grade A, and why
external-idp-integration 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 10d 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.
What it actually says
External IdP Integration for MCP Servers
Security Requirement
MCP servers MUST be capable of integrating with centralized identity providers (e.g., Keycloak) for authentication and authorization. The MCP server should not implement its own user store but delegate identity management to an external IdP.
Why External IdP
| Benefit | Description |
|---|---|
| Centralized identity | Single source of truth for user and service identities |
| Standard protocols | OIDC/OAuth 2.1 compliance out of the box |
| Enterprise features | MFA, federation, session management handled by IdP |
| Reduced attack surface | MCP server does not store credentials |
| Consistent policy | Same authentication policies across all services |
Integration Requirements
The MCP server must:
- Discover the IdP via standard metadata endpoints (
/.well-known/openid-configurationor/.well-known/oauth-authorization-server) - Validate tokens issued by the IdP (JWT signature verification against JWKS)
- Accept tokens from the configured IdP(s) only
- Allow configuration of the trusted IdP issuer URL
Example Configuration
auth:
idp:
issuer: "https://keycloak.example.com/realms/mcp"
jwks_uri: "https://keycloak.example.com/realms/mcp/protocol/openid-connect/certs"
audience: "mcp-server"
require_auth: true
Implementation Checklist
- Support configuring one or more external IdP issuer URLs
- Discover IdP endpoints via standard metadata (OIDC Discovery or RFC 8414)
- Validate JWT tokens against the IdP's JWKS endpoint
- Verify
iss,aud,exp, andscopeclaims on every request - Reject tokens from untrusted issuers
- Support Keycloak and other standard OIDC-compliant IdPs
- Do not implement a built-in user store; delegate to the external IdP
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.
- 10d ago First seen · 53 lines · 36 tokens per session scan A 47af1c46c260
external-idp-integration is a skill published in the GitHub repository RedHatProductSecurity/prodsec-skills (52 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 36 tokens to every session and 482 once invoked, about $0.0002 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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