Borrowing it
Nothing to install: this file belongs to jl-codes/platformio-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/jl-codes/platformio-mcp/main/.skills/firmware-bringup/SKILL.mdgit clone --depth 1 https://github.com/jl-codes/platformio-mcpWrote 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/jl-codes/platformio-mcp/firmware-bringup)<a href="https://agentmods.dev/skills/jl-codes/platformio-mcp/firmware-bringup"><img src="https://agentmods.dev/badge/skills/jl-codes/platformio-mcp/firmware-bringup/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/jl-codes/platformio-mcp/firmware-bringup"><img src="https://agentmods.dev/badge/skills/jl-codes/platformio-mcp/firmware-bringup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00058 | $0.00534 |
| Opus 5.5 | $0.00023 | $0.00214 |
| Sonnet 5.5 | $0.00012 | $0.00107 |
| Haiku 4.5 | $0.00006 | $0.00053 |
Grade A, and why
firmware-bringup 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 25d 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 — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Firmware Bringup
Purpose
Use this skill when the user wants to bring up a new embedded board or create a minimal working firmware project.
Safety Rules
- Do not flash firmware without explicit user approval.
- Do not erase flash unless the user explicitly asks.
- Do not assume the serial port. Discover connected devices first.
- Preserve logs and task IDs for debugging.
Workflow
- Inspect the exact project with
pio-agent project context --project-dir <dir>andpio-agent policy-status --project-dir <dir>. - Use
pio-agent devicesandpio-agent boardsonly for discovery, then runpio-agent target-resolvewith one environment and optional explicit port. - Stop if target resolution is ambiguous, unavailable, or lower-confidence than the user accepts.
- Initialize the project only when requested (
pio-agent init --board <id> --project-dir <dir>), then add a minimal serial boot marker such asBOOT_OK. - Run
pio-agent agent-validate --project-dir <dir>, thenpio-agent agent-build-diagnose --project-dir <dir> --environment <env>for the resolved environment. - If the build succeeds, request explicit approval for
pio-agent agent-flash-monitor-verifyusing the resolved binding's port and environment. - After approval, flash and verify bounded runtime markers. Keep the returned task ID, log paths, and binding digest.
- Report build, flash, monitor, and assertion outcomes separately with one next action.
Preferred Commands
Use the pio-agent CLI for all build, upload, monitor, and port-claim
operations. Pass --json when you intend to parse the output. Do not
substitute raw pio or platformio shell commands: they bypass port claims,
task tracking, and log spooling. See the pio-manager skill for full syntax.
A non-zero exit means read BOTH streams. An operation that ran but failed (a
build with errors) puts success: false on stdout; one that could not run
(bad arguments, policy, a busy port) puts errorType on stderr with stdout
empty. Capture both (... --json 2>&1).
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.
- 25d ago Changed · +8 lines 44fed5a61cb0
- 1mo ago Changed · -11 lines d82c45bd9e8f
- 1mo ago First seen · 44 lines · 58 tokens per session scan A b09339512280
firmware-bringup is a skill published in the GitHub repository jl-codes/platformio-mcp (54 stars, last pushed 16d ago), licensed MIT. It adds 58 tokens to every session and 534 once invoked, about $0.0002 per session on Opus 5.5. 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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