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 wedsamuel1230/arduino-skills --skill ota-deployment-guardiangit clone --depth 1 https://github.com/wedsamuel1230/arduino-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/wedsamuel1230/arduino-skills/ota-deployment-guardian)<a href="https://agentmods.dev/skills/wedsamuel1230/arduino-skills/ota-deployment-guardian"><img src="https://agentmods.dev/badge/skills/wedsamuel1230/arduino-skills/ota-deployment-guardian/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/wedsamuel1230/arduino-skills/ota-deployment-guardian"><img src="https://agentmods.dev/badge/skills/wedsamuel1230/arduino-skills/ota-deployment-guardian.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 | $0.00048 | $0.00851 |
| Opus 5 | $0.00024 | $0.00426 |
| Sonnet 5 | $0.00010 | $0.00170 |
| Haiku 4.5 | $0.00005 | $0.00085 |
Grade A, and why
ota-deployment-guardian 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 12d 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 — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OTA Deployment Guardian
Use this skill when a device is updated remotely and losing the update path would be expensive.
Resources
references/ota-safe-sketch.md- minimum sketch-side OTA contract and guardrailsreferences/discovery-and-network-ports.md- IDE, mDNS, IP reachability, and disappearing network port triagereferences/recovery-and-rollback.md- rollout safety, rollback, and last-resort recovery planning../../docs/board-support/uno-r4-family.md- Uno R4 Minima and Uno R4 WiFi board-family caveats
When to Use
Use this skill when the request involves:
- OTA uploads for ESP32, Nano ESP32, or Uno R4 WiFi
- network port appears briefly or disappears
- IDE can ping the device but cannot upload
- keeping a remote weather station or deployed board updateable
- avoiding self-bricking after an OTA deployment
Do not use this skill for ordinary bench USB uploads unless the user is clearly preparing for later OTA deployment.
Workflow
- Confirm the board family:
- ESP32 or Nano ESP32 -> open
references/ota-safe-sketch.md - Uno R4 WiFi -> also open
../../docs/board-support/uno-r4-family.md
- ESP32 or Nano ESP32 -> open
- Separate discovery failures from sketch failures:
- ping works but network port disappears -> open
references/discovery-and-network-ports.md - OTA works once, then disappears after the new sketch runs -> verify the new
sketch still implements the OTA path in
ota-safe-sketch.md
- ping works but network port disappears -> open
- Before suggesting a rollout, check
references/recovery-and-rollback.mdfor recovery path, rollback strategy, and what must stay available over USB. - Treat core-version changes as a possible variable when OTA previously worked and later became unreliable.
Security And Maintenance Boundary
Use the router's connected-device security reference for secrets, signed images, dependency versions, staged rollout, rollback, vulnerability response, and decommissioning. This skill's board-specific OTA procedures do not prove that the device has secure boot, authenticated updates, or a recoverable field deployment; verify those controls on the exact target.
What ships with it
3 files 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.
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.
- 12d ago First seen · 89 lines · 48 tokens per session scan A 750cc9ebac8f
ota-deployment-guardian is a skill published in the GitHub repository wedsamuel1230/arduino-skills (21 stars, last pushed 23d ago), licensed MIT. It adds 48 tokens to every session and 851 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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