mbedtls-integration

mbedtls-integration is a skill for Claude Code, Codex from easyzoom/aix-skills. It costs 41 tokens per session (700 once invoked), scanned A, original, MIT.

A guide for using mbedTLS, a security library for embedded devices, to provide encrypted connections and certificate checks. It covers the device-specific foundations such as random numbers, clocks, certificates, memory, and network callbacks.

In plain words
What is it for?
Use it for HTTPS, secure MQTT, DTLS, certificate handling, secure boot primitives, and encrypted MCU network connections.
Why use it?
TLS failures often come from incorrect hardware or platform setup rather than from the encryption code itself. The guide helps isolate those causes before changing application protocols.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for HTTPS, secure MQTT, DTLS, certificate handling, secure boot primitives, and encrypted MCU network connections.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/easyzoom/aix-skills/mbedtls-integration
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 easyzoom/aix-skills --skill mbedtls-integration
Clone the repo
git clone --depth 1 https://github.com/easyzoom/aix-skills

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 mbedtls-integration

README.md
[![agentmods](https://agentmods.dev/badge/skills/easyzoom/aix-skills/mbedtls-integration/github.svg)](https://agentmods.dev/skills/easyzoom/aix-skills/mbedtls-integration)
Your own site
<a href="https://agentmods.dev/skills/easyzoom/aix-skills/mbedtls-integration"><img src="https://agentmods.dev/badge/skills/easyzoom/aix-skills/mbedtls-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.

agentmods 80×15 button for mbedtls-integration

Your own site · 80×15
<a href="https://agentmods.dev/skills/easyzoom/aix-skills/mbedtls-integration"><img src="https://agentmods.dev/badge/skills/easyzoom/aix-skills/mbedtls-integration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 700 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 original No closer match found 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 $0.00041 $0.00700
Opus 5 $0.00020 $0.00350
Sonnet 5 $0.00008 $0.00140
Haiku 4.5 $0.00004 $0.00070

Measured 10d ago against content hash 1db9a888a648, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

mbedtls-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.

skills/mbedtls-integration/SKILL.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

mbedTLS Integration

Overview

Use this skill to integrate mbedTLS on embedded targets by proving entropy/RNG, time, certificate storage, transport I/O, and memory configuration before debugging application protocols. TLS failures often come from platform hooks rather than cryptography logic.

When To Use

Use this skill when:

  • The user wants TLS, HTTPS, MQTT over TLS, DTLS, X.509, crypto, or secure boot-related primitives using mbedTLS.
  • The issue involves handshake failure, certificate validation, entropy source, RNG, memory allocation, time validity, or socket callbacks.
  • The target is resource-constrained or has hardware crypto/TRNG.

Do not use this skill for generic networking before TCP/IP works. Use lwip-integration first when connectivity is unproven. For lightweight ECC-only operations, use micro-ecc-integration or tinycrypt-integration.

First Questions

Ask for:

  • mbedTLS version, target MCU/RTOS, compiler, and network stack.
  • Use case: TLS client, TLS server, DTLS, crypto only, MQTT TLS, HTTPS, or certificate parsing.
  • mbedtls_config.h, enabled features, heap/static allocation policy, and hardware crypto use.
  • Entropy/RNG source and time source.
  • Certificate chain model, CA storage, SNI/hostname verification, and current error code.

Integration Checklist

  1. Prove entropy and RNG. TLS requires a real entropy source. Do not ship deterministic test entropy.

  2. Configure time. Certificate validation needs valid time or an explicit product policy for time-less validation.

  3. Bound memory. Configure record size, heap, I/O buffers, certificate features, and algorithms for MCU limits.

  4. Connect transport callbacks. Network send/recv callbacks must handle non-blocking, timeout, and partial I/O correctly.

  5. Validate certificates. Use CA chain, hostname/SNI, and expected verification policy. Do not disable verification silently.

  6. Decode error codes. Convert negative mbedTLS errors to readable names before guessing.

Read the full file on GitHub · 84 lines

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. 10d ago First seen · 84 lines · 41 tokens per session scan A 1db9a888a648

Subscribe to this mod's changes

mbedtls-integration is a skill published in the GitHub repository easyzoom/aix-skills (31 stars, last pushed 1mo ago), licensed MIT. It adds 41 tokens to every session and 700 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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