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 OpenLAIR/OpenSkill --skill evo-video-samplinggit clone --depth 1 https://github.com/OpenLAIR/OpenSkillWrote 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/openlair/openskill/evo-video-sampling)<a href="https://agentmods.dev/skills/openlair/openskill/evo-video-sampling"><img src="https://agentmods.dev/badge/skills/openlair/openskill/evo-video-sampling/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/openlair/openskill/evo-video-sampling"><img src="https://agentmods.dev/badge/skills/openlair/openskill/evo-video-sampling.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 | $0.00034 | $0.00316 |
| Opus 5.5 | $0.00014 | $0.00126 |
| Sonnet 5.5 | $0.00007 | $0.00063 |
| Haiku 4.5 | $0.00003 | $0.00032 |
Grade A, and why
evo-video-sampling 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 1mo 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.
What it actually says
evo-video-sampling
Extracts frames from an MP4 video at a target FPS using reliable sequential reading (avoids unreliable CAP_PROP_POS_FRAMES seeking in compressed MP4s).
Key Function
sample_video_frames(video_path, target_fps=6)— Returns(sampled_frames, frame_indices, original_fps)sampled_frames: list of grayscale np.uint8 2D arraysframe_indices: list of original frame indices (0-based)original_fps: the video's native FPS
Usage
import sys
sys.path.insert(0, '/app/environment/skills/evo-video-sampling/scripts')
from utils import sample_video_frames
frames, indices, fps = sample_video_frames('/root/input.mp4', target_fps=6)
print(f"Sampled {len(frames)} frames from video at {fps} FPS")
Implementation Details
- Uses
cv2.VideoCapturewith sequentialread()loop (no seeking) - Frame step =
max(1, int(round(original_fps / target_fps))) - Converts BGR to grayscale immediately via
cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY) - Fallback FPS of 30.0 if
CAP_PROP_FPSreturns <= 0
What ships with it
1 file 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.
- 1mo ago First seen · 35 lines · 34 tokens per session scan A a320da0ae0a1
evo-video-sampling is a skill published in the GitHub repository OpenLAIR/OpenSkill (97 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 34 tokens to every session and 316 once invoked, about $0.0001 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 2026-09-11.
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