nanopb-integration

nanopb-integration is a skill for Claude Code, Codex from easyzoom/aix-skills. It costs 41 tokens per session (592 once invoked), scanned A, original, MIT.

A guide for using nanopb, a small Protocol Buffers implementation for embedded devices. Protocol Buffers store structured messages in a compact binary format generated from .proto schema files.

In plain words
What is it for?
Use it to generate and maintain nanopb code, encode or decode messages, handle repeated fields and callbacks, limit message sizes, and keep device and host schemas compatible.
Why use it?
Encoding and decoding problems often result from mismatched generated files, fields that are too large, callbacks, or different schema versions on the host and device. The guide focuses on controlling these risks within limited memory.

Skill for Claude CodeCodex

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

Good fit Use it to generate and maintain nanopb code, encode or decode messages, handle repeated fields and callbacks, limit message sizes, and keep device and host schemas compatible.

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Install with agentmods
npx agentmods add skills/easyzoom/aix-skills/nanopb-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 nanopb-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 nanopb-integration

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/easyzoom/aix-skills/nanopb-integration"><img src="https://agentmods.dev/badge/skills/easyzoom/aix-skills/nanopb-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 592 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 $0.00592
Opus 5 $0.00020 $0.00296
Sonnet 5 $0.00008 $0.00118
Haiku 4.5 $0.00004 $0.00059

Measured 11d ago against content hash 9396034cf12d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

nanopb-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 11d 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/nanopb-integration/SKILL.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

nanopb Integration

Overview

Use this skill to integrate nanopb by controlling schema size, generated options, callbacks, and buffer ownership. Embedded protobuf failures usually come from mismatched generated files, unbounded fields, or callback misuse.

When To Use

Use this skill when:

  • The user wants Protocol Buffers on an MCU using nanopb.
  • The task involves .proto, .options, nanopb_generator.py, pb_encode, pb_decode, repeated fields, strings, bytes, callbacks, or fixed-size arrays.
  • Encoding/decoding fails, messages are truncated, memory usage is too high, or host and device schemas mismatch.

Do not use this skill for general JSON/INI parsing. Use embedded-data-parsing-libs instead.

First Questions

Ask for:

  • nanopb version and how code generation runs.
  • .proto, .options, generated .pb.c/.pb.h, and host-side schema version.
  • Transport/storage where messages are sent.
  • Max message size, RAM budget, and whether streaming decode is needed.
  • Current encode/decode error and sample payload if available.

Integration Checklist

  1. Lock schema and generated files together. Regenerate .pb.c/.pb.h whenever .proto or .options changes.

  2. Bound variable fields. Use nanopb options for max string, bytes, repeated field, or callback-based streaming.

  3. Size buffers explicitly. Know max encoded size and transport frame limits.

  4. Check return values. Always inspect pb_encode/pb_decode failure and error text.

  5. Validate compatibility. Test device-generated payload with host decoder and host-generated payload with device decoder.

Common Failures

  • Generated files are stale relative to .proto.
  • Repeated/string fields need max sizes but default to callbacks.
  • Decode fails because the transport strips length framing.
  • Device and host use different schema versions.
  • Stack buffers are too small for worst-case message size.
  • Callback decode stores pointers into temporary buffers.

Verification

Read the full file on GitHub · 81 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. 11d ago First seen · 81 lines · 41 tokens per session scan A 9396034cf12d

Subscribe to this mod's changes

nanopb-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 592 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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