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 easyzoom/aix-skills --skill fatfs-integrationgit clone --depth 1 https://github.com/easyzoom/aix-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/easyzoom/aix-skills/fatfs-integration)<a href="https://agentmods.dev/skills/easyzoom/aix-skills/fatfs-integration"><img src="https://agentmods.dev/badge/skills/easyzoom/aix-skills/fatfs-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.
<a href="https://agentmods.dev/skills/easyzoom/aix-skills/fatfs-integration"><img src="https://agentmods.dev/badge/skills/easyzoom/aix-skills/fatfs-integration.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 | $0.00042 | $0.00785 |
| Opus 5 | $0.00021 | $0.00392 |
| Sonnet 5 | $0.00008 | $0.00157 |
| Haiku 4.5 | $0.00004 | $0.00078 |
Grade A, and why
fatfs-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.
How it starts
The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.
FatFs Integration
Overview
Use this skill to integrate FatFs by proving the disk I/O layer before trusting filesystem behavior. FatFs is portable C, but the target-specific diskio functions, sector geometry, mount policy, and media timing decide whether it works reliably.
When To Use
Use this skill when:
- The user wants to add or debug FatFs on SD card, eMMC, USB MSC, RAM disk, SPI flash, or block devices.
- The issue involves
f_mount,f_open,f_read,f_write,FR_DISK_ERR,FR_NOT_READY,FR_NO_FILESYSTEM, long filenames, Unicode, or exFAT. - The project uses
ff.c,ffconf.h,diskio.c, orFATFS.
Do not use this skill when the raw block device cannot read/write sectors yet; debug the storage driver first.
First Questions
Ask for:
- Media type and transport: SDIO, SPI SD, eMMC, USB MSC, RAM disk, or flash translation layer.
- Sector size, sector count, erase/block size, and whether writes are cached.
ffconf.h,diskio.c, and current FatFs return code.- RTOS or bare-metal runtime and whether reentrancy is enabled.
- Whether formatting is allowed. Formatting can destroy user data.
- Long filename, Unicode, exFAT, timestamp, and multi-volume requirements.
Integration Checklist
-
Prove disk I/O.
disk_initialize,disk_status,disk_read,disk_write, anddisk_ioctlmust work independently. -
Match sector geometry. FatFs expects logical sectors and correct sector count.
GET_SECTOR_COUNT,GET_SECTOR_SIZE, andCTRL_SYNCmatter. -
Mount before formatting. Try
f_mountfirst. Ask beforef_mkfsor any operation that can erase media. -
Configure
ffconf.hintentionally. Reentrancy, LFN buffers, exFAT, code page, relative paths, and timestamp support affect RAM and behavior. -
Add locking if shared. Enable and implement synchronization when multiple tasks can access the same volume.
-
Verify persistence. Write,
f_sync/f_close, unmount/reset, remount, and read back.
Common Failures
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.
- 10d ago First seen · 85 lines · 42 tokens per session scan A 48d9228312cb
fatfs-integration is a skill published in the GitHub repository easyzoom/aix-skills (31 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 785 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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