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 heatshrink-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/heatshrink-integration)<a href="https://agentmods.dev/skills/easyzoom/aix-skills/heatshrink-integration"><img src="https://agentmods.dev/badge/skills/easyzoom/aix-skills/heatshrink-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/heatshrink-integration"><img src="https://agentmods.dev/badge/skills/easyzoom/aix-skills/heatshrink-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 | $0.00045 | $0.01412 |
| Opus 5 | $0.00023 | $0.00706 |
| Sonnet 5 | $0.00009 | $0.00282 |
| Haiku 4.5 | $0.00005 | $0.00141 |
Grade A, and why
heatshrink-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.
How it starts
The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.
heatshrink Integration
Overview
Use this skill to integrate heatshrink (github.com/atomicobject/heatshrink) by fixing memory budget, window_sz2/lookahead_sz2 sizes, the sink/poll/finish streaming loop, and decompression safety. Compression bugs usually come from mismatched encoder/decoder settings, an unfinished poll loop, or output buffers that are too small.
When To Use
Use this skill when:
- The user wants heatshrink compression/decompression on an MCU.
- The task involves compressed logs, resources, firmware chunks, OTA payloads, or serial transfer compression.
- Decompression fails, output is truncated, memory is too high, or compressed data is incompatible.
- The project uses
heatshrink_encoder.h,heatshrink_decoder.h,heatshrink_config.h, or theheatshrinkcommand-line tool.
Do not use this skill for general archive formats like gzip/zip unless heatshrink is specifically involved.
First Questions
Ask for:
- Use case: logs, UI assets, firmware chunks, telemetry, or storage.
- Encoder/decoder settings:
window_sz2(4-15) andlookahead_sz2(3 towindow_sz2 - 1). The CLI's compiled default is-w 11 -l 4; its help text recommends-w 8 -l 4for embedded systems. - Allocation model:
HEATSHRINK_DYNAMIC_ALLOC(heap viaHEATSHRINK_MALLOC/HEATSHRINK_FREE) or static (HEATSHRINK_STATIC_WINDOW_BITS,HEATSHRINK_STATIC_LOOKAHEAD_BITS,HEATSHRINK_STATIC_INPUT_BUFFER_SIZE). - Streaming or one-shot mode, and input/output chunk sizes plus decompressed size bound.
- Whether compressed data comes from host tools or target firmware.
- Current return code or mismatch symptom.
Integration Checklist
-
Match settings across the boundary. Decoder
expansion_buffer_sz2andlookahead_sz2must match the encoder'swindow_sz2/lookahead_sz2. Under static alloc, both sides must share the sameHEATSHRINK_STATIC_WINDOW_BITS/HEATSHRINK_STATIC_LOOKAHEAD_BITS. -
Choose the allocation model. Dynamic:
heatshrink_encoder_alloc(window_sz2, lookahead_sz2)/heatshrink_decoder_alloc(input_buffer_size, expansion_buffer_sz2, lookahead_sz2), freed with*_free. Static: setHEATSHRINK_DYNAMIC_ALLOC 0inheatshrink_config.hand use a stack/BSS instance,*_resetbefore reuse.
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.
- 11d ago First seen · 87 lines · 45 tokens per session scan A 4e23027c38d9
heatshrink-integration is a skill published in the GitHub repository easyzoom/aix-skills (31 stars, last pushed 1mo ago), licensed MIT. It adds 45 tokens to every session and 1,412 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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