Borrowing it
Nothing to install: this file belongs to caveman99/platform-nordicnrf54. 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/caveman99/platform-nordicnrf54/master/AGENTS.mdgit clone --depth 1 https://github.com/caveman99/platform-nordicnrf54Wrote 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/instructions/caveman99/platform-nordicnrf54/agents-md)<a href="https://agentmods.dev/instructions/caveman99/platform-nordicnrf54/agents-md"><img src="https://agentmods.dev/badge/instructions/caveman99/platform-nordicnrf54/agents-md/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/instructions/caveman99/platform-nordicnrf54/agents-md"><img src="https://agentmods.dev/badge/instructions/caveman99/platform-nordicnrf54/agents-md.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 | $0.01812 | $0.01812 |
| Opus 5.5 | $0.00725 | $0.00725 |
| Sonnet 5.5 | $0.00362 | $0.00362 |
| Haiku 4.5 | $0.00181 | $0.00181 |
Grade A, and why
platform-nordicnrf54 AGENTS.md 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 2mo 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 — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent guide for this repo
What this repo is
The PlatformIO development platform for the Nordic nRF54L series (nRF54L05 / nRF54L10 / nRF54L15) — Cortex-M33 with RRAM, targeting an Adafruit-style Arduino core on the s145 SoftDevice v9.0.0.
This repo holds no firmware source. It is the orchestration layer:
platform.json declares the package set, builder/ drives the build
and upload, boards/ defines the five board variants, examples/
holds runnable sketches (also the CI test matrix).
Out-of-tree platform: consumers install it directly from the repo URL, not from the PlatformIO Registry.
Companion repos
| Repo | Role | PIO package |
|---|---|---|
caveman99/nRF54_Arduino |
Arduino core / framework source, s145 SoftDevice headers + hex | framework-arduinoadafruitnrf54 |
caveman99/nRF54_Bootloader |
DFU bootloader source + per-board hex | framework-arduinoadafruitnrf54-bootloader |
Both are referenced as git URLs in platform.json and are public —
PIO clones them with no authentication. PIO re-clones the framework at
its current default-branch HEAD on every fresh CI runner (--depth 1,
no cross-run cache), so a framework fix is picked up by a platform CI
re-run without any platform-side change.
Project conventions
Commit messages
- Never add
Co-Authored-By: Claude(or any AI attribution) trailers. - Imperative subject, terse but specific. Reference SHAs of related prior commits where helpful.
- Multi-paragraph body for non-trivial changes: state the symptom, the root cause, and what the fix does. CI build-log excerpts make good citations.
Where a change belongs (cross-repo routing)
The platform <-> framework boundary follows one rule everywhere:
| Change touches | Goes in |
|---|---|
Compiler invocation: -mcpu, -mfpu, include paths (CPPPATH), CPPDEFINES, force-includes, what BuildLibrary walks |
here — builder/frameworks/arduino/adafruit.py |
| Board metadata: chip, MCU define, link script name, flash/RAM sizes, SD FWID, bootloader settings address, upload tooling | here — boards/<variant>.json |
| Toolchain / tool package versions | here — platform.json |
| Upload / merge / DFU-package logic, upload targets | here — builder/main.py |
| Example sketches, CI matrix | here — examples/, .github/workflows/ |
C/C++ source, headers, linker scripts, nrfx_config.h, variants, bundled-library library.properties |
framework repo |
| Bootloader source, linker scripts, board defs, per-board hex | bootloader repo |
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.
- 2mo ago First seen · 146 lines · 1,812 tokens per session scan A 70b28056c311
platform-nordicnrf54 AGENTS.md is an instructions file published in the GitHub repository caveman99/platform-nordicnrf54 (2 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 1,812 tokens to every session, about $0.0072 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 2026-08-31.
platform-nordicnrf54 AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| platform-nordicnrf54 AGENTS.mdcaveman99/platform-nordicnrf54 | Instructions file | 2 | 5mo ago | Apache-2.0 | A | 1,812 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,649 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| vscode model-prompts.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 2,022 | GitHub Copilot |