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 agentmods add skills/ourobx/agent-ebpf/generate2dspritenpx skills add ourobx/agent-ebpf --skill generate2dspritegit clone --depth 1 https://github.com/ourobx/agent-ebpfWrote 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/ourobx/agent-ebpf/generate2dsprite)<a href="https://agentmods.dev/skills/ourobx/agent-ebpf/generate2dsprite"><img src="https://agentmods.dev/badge/skills/ourobx/agent-ebpf/generate2dsprite.svg" alt="Measured on agentmods" 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 | $0.00118 | $0.05199 |
| Opus 5 | $0.00059 | $0.02599 |
| Sonnet 5 | $0.00024 | $0.01040 |
| Haiku 4.5 | $0.00012 | $0.00520 |
Grade A, and why
generate2dsprite 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 yesterday.
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 — 314 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Generate2dsprite
Use this skill for self-contained 2D sprite or animation assets in the app-builder sandbox (TanStack Start + browser games).
When a larger game or playable prototype needs sprites, use this skill for the visible sprite assets and keep runtime/game assembly separate (wire into Phaser / Canvas / DOM after export). Do not replace requested sprite assets with code-drawn placeholders.
App-builder / Grok environment
| Item | Value |
|---|---|
| Skill dir | .grok/skills/generate2dsprite/ |
| Scripts | python3 .grok/skills/generate2dsprite/scripts/<script>.py … |
| Image tools | imagine_text_to_image / imagine_image_to_image (path-based; see imagine skill for prompt craft) |
| Inspect images | read_file on the PNG path (not Codex view_image) |
| Generated image path | imagine_text_to_image returns a sandbox file_path; copy that path into your run dir before processing |
| Python deps | Pillow + numpy (preinstalled in the image) |
| Output home | Prefer assets/sprites/<name>/ under /workspace so the app can import them |
| Engine target | Browser: Canvas 2D, Phaser, or DOM/<img> — not Godot/Unity unless the user asks |
Related skills: imagine (image tool usage), game-asset-core (+
game-animation-frames / game-character-consistency for QC and engine-ready
defaults), generate2dmap (maps/props), video2dsprite (denser motion
via imagine_image_to_video), building-games (game loop / integration).
Parameters
Infer these from the user request:
asset_type:player|npc|creature|character|spell|projectile|impact|prop|summon|fxaction:single|idle|cast|attack|shoot|jump|hurt|combat|walk|run|hover|charge|projectile|impact|explode|deathview:topdown|side|3/4sheet:auto|2x2|2x3|2x4|3x3|3x4|4x4|5x5|custom_grid|strip_1x3|strip_1x4frames:autoor explicit countbundle:single_asset|unit_bundle|spell_bundle|combat_bundle|line_bundle|hero_action_bundle|engine_atlaseffect_policy:all|largestanchor:center|bottom|feetmargin:tight|normal|safeart_style: pixel_art | clean_hd | pixel_inspired | retro_pixel | map_style | project-nativereference:none|attached_image|generated_image|local_filelayout_guide:none|optional|recommendedprompt: the user's theme or visual directionrole: only when the asset is clearly an NPC rolename: optional output slug
What ships with it
6 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.
- yesterday First seen · 314 lines · 118 tokens per session scan A d620ac32acdb
generate2dsprite is a skill published in the GitHub repository ourobx/agent-ebpf (1 stars, last pushed today), licensed MIT. It adds 118 tokens to every session and 5,199 once invoked, about $0.0006 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 2026-09-04.
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