evo-stl-binary-parser

evo-stl-binary-parser is a skill for Claude Code, Codex from OpenLAIR/OpenSkill. It costs 49 tokens per session (360 once invoked), scanned A, original, Apache-2.0.

A Python skill for reading binary STL files and material-density tables. STL is a common format for storing 3D triangle meshes; the skill also extracts and filters material IDs.

In plain words
What is it for?
Use it to load triangle data, read material IDs, filter facets, detect a material, or look up its density.
Why use it?
It avoids writing low-level binary parsing code and separate material-density lookup logic for each STL task.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to load triangle data, read material IDs, filter facets, detect a material, or look up its density.

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Install with agentmods
npx agentmods add skills/openlair/openskill/evo-stl-binary-parser
Install

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.

Any agent
npx skills add OpenLAIR/OpenSkill --skill evo-stl-binary-parser
Clone the repo
git clone --depth 1 https://github.com/OpenLAIR/OpenSkill

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for evo-stl-binary-parser

README.md
[![agentmods](https://agentmods.dev/badge/skills/openlair/openskill/evo-stl-binary-parser/github.svg)](https://agentmods.dev/skills/openlair/openskill/evo-stl-binary-parser)
Your own site
<a href="https://agentmods.dev/skills/openlair/openskill/evo-stl-binary-parser"><img src="https://agentmods.dev/badge/skills/openlair/openskill/evo-stl-binary-parser/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.

agentmods 80×15 button for evo-stl-binary-parser

Your own site · 80×15
<a href="https://agentmods.dev/skills/openlair/openskill/evo-stl-binary-parser"><img src="https://agentmods.dev/badge/skills/openlair/openskill/evo-stl-binary-parser.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 360 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00049 $0.00360
Opus 5 $0.00024 $0.00180
Sonnet 5 $0.00010 $0.00072
Haiku 4.5 $0.00005 $0.00036

Measured today against content hash 4e2619e2435e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

evo-stl-binary-parser 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 today.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/utils.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

tasks-evolved/3d-scan-calc/environment/skills/evo-stl-binary-parser/SKILL.md · 34 lines

What it actually says

evo-stl-binary-parser

Parses binary STL files and material density tables.

Key Functions

  • parse_binary_stl(filepath) - Parse binary STL, returns list of (v1, v2, v3, material_id) tuples
  • parse_material_density_table(filepath) - Parse markdown density table, returns {id: density} dict
  • filter_facets_by_material_id(triangles, material_id) - Filter triangles by material
  • detect_material_id(triangles) - Find dominant material ID (excluding debris ID=1)
  • lookup_density(material_id, density_table=None) - Look up density from table

Usage

import sys
sys.path.insert(0, '/app/environment/skills/evo-stl-binary-parser/scripts')
from utils import parse_binary_stl, parse_material_density_table, lookup_density

triangles = parse_binary_stl('/root/scan_data.stl')
density_table = parse_material_density_table('/root/material_density_table.md')

Binary STL Layout

  • 80 bytes header, 4 bytes uint32 count, N x 50-byte facet records
  • Each facet: 12 bytes normal + 36 bytes vertices + 2 bytes attribute (Material ID)
  • Format string: '<12fH' (little-endian)
  • data[3:6]=v1, data[6:9]=v2, data[9:12]=v3, data[12]=attribute
Files

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.

Changes

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.

  1. today First seen · 34 lines · 49 tokens per session scan A 4e2619e2435e

Subscribe to this mod's changes

evo-stl-binary-parser is a skill published in the GitHub repository OpenLAIR/OpenSkill (88 stars, last pushed yesterday), licensed Apache-2.0. It adds 49 tokens to every session and 360 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 2026-09-11.

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