mtls-configuration

mtls-configuration is a skill for Claude Code, Codex from RudyCity/superagent. It costs 38 tokens per session (582 once invoked), scanned A, a copy of mtls-configuration, MIT.

Instructions for using mutual TLS, where services authenticate each other with certificates while encrypting their connection.

In plain words
What is it for?
Use it to configure service-to-service encryption, manage and rotate certificates, secure multiple clusters, and investigate TLS handshake problems.
Why use it?
It helps secure communication between internal services and supports zero-trust network designs.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to configure service-to-service encryption, manage and rotate certificates, secure multiple clusters, and investigate TLS handshake problems.

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Install with agentmods
npx agentmods add skills/rudycity/superagent/mtls-configuration
Install

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.

Any agent
npx skills add RudyCity/superagent --skill mtls-configuration
Clone the repo
git clone --depth 1 https://github.com/RudyCity/superagent

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for mtls-configuration

README.md
[![agentmods](https://agentmods.dev/badge/skills/rudycity/superagent/mtls-configuration/github.svg)](https://agentmods.dev/skills/rudycity/superagent/mtls-configuration)
Your own site
<a href="https://agentmods.dev/skills/rudycity/superagent/mtls-configuration"><img src="https://agentmods.dev/badge/skills/rudycity/superagent/mtls-configuration/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.

agentmods 80×15 button for mtls-configuration

Your own site · 80×15
<a href="https://agentmods.dev/skills/rudycity/superagent/mtls-configuration"><img src="https://agentmods.dev/badge/skills/rudycity/superagent/mtls-configuration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 582 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00038 $0.00582
Opus 5 $0.00019 $0.00291
Sonnet 5 $0.00008 $0.00116
Haiku 4.5 $0.00004 $0.00058

Measured 5d ago against content hash 1527e7f31e5e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mtls-configuration 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 5d 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.

Origin

This is a copy

100% identical to mtls-configuration — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/mtls-configuration/SKILL.md · 74 lines

How it starts

The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.

mTLS Configuration

Comprehensive guide to implementing mutual TLS for zero-trust service mesh communication.

When to Use This Skill

  • Implementing zero-trust networking
  • Securing service-to-service communication
  • Certificate rotation and management
  • Debugging TLS handshake issues
  • Compliance requirements (PCI-DSS, HIPAA)
  • Multi-cluster secure communication

Core Concepts

1. mTLS Flow

┌─────────┐                              ┌─────────┐
│ Service │                              │ Service │
│    A    │                              │    B    │
└────┬────┘                              └────┬────┘
     │                                        │
┌────┴────┐      TLS Handshake          ┌────┴────┐
│  Proxy  │◄───────────────────────────►│  Proxy  │
│(Sidecar)│  1. ClientHello             │(Sidecar)│
│         │  2. ServerHello + Cert      │         │
│         │  3. Client Cert             │         │
│         │  4. Verify Both Certs       │         │
│         │  5. Encrypted Channel       │         │
└─────────┘                              └─────────┘

2. Certificate Hierarchy

Root CA (Self-signed, long-lived)
    │
    ├── Intermediate CA (Cluster-level)
    │       │
    │       ├── Workload Cert (Service A)
    │       └── Workload Cert (Service B)
    │
    └── Intermediate CA (Multi-cluster)
            │
            └── Cross-cluster certs

Templates and detailed worked examples

Full template library and detailed worked examples live in references/details.md. Read that file when you need the concrete templates.

Best Practices

Do's

  • Start with PERMISSIVE - Migrate gradually to STRICT
  • Monitor certificate expiry - Set up alerts
  • Use short-lived certs - 24h or less for workloads
  • Rotate CA periodically - Plan for CA rotation
  • Log TLS errors - For debugging and audit

Don'ts

  • Don't disable mTLS - For convenience in production
  • Don't ignore cert expiry - Automate rotation
  • Don't use self-signed certs - Use proper CA hierarchy
  • Don't skip verification - Verify the full chain

Read the full file on GitHub · 74 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 5d ago First seen · 74 lines · 38 tokens per session scan A 1527e7f31e5e

Subscribe to this mod's changes

mtls-configuration is a skill published in the GitHub repository RudyCity/superagent (21 stars, last pushed yesterday), licensed MIT. It adds 38 tokens to every session and 582 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to mtls-configuration, differing in 0 lines, and is treated as a copy.

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