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 Impertio-Studio/QGIS-Claude-Skill-Package --skill qgis-core-architecturegit clone --depth 1 https://github.com/Impertio-Studio/QGIS-Claude-Skill-PackageWrote 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/impertio-studio/qgis-claude-skill-package/qgis-core-architecture)<a href="https://agentmods.dev/skills/impertio-studio/qgis-claude-skill-package/qgis-core-architecture"><img src="https://agentmods.dev/badge/skills/impertio-studio/qgis-claude-skill-package/qgis-core-architecture/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/impertio-studio/qgis-claude-skill-package/qgis-core-architecture"><img src="https://agentmods.dev/badge/skills/impertio-studio/qgis-claude-skill-package/qgis-core-architecture.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 | $0.00113 | $0.03331 |
| Opus 5.5 | $0.00045 | $0.01332 |
| Sonnet 5.5 | $0.00023 | $0.00666 |
| Haiku 4.5 | $0.00011 | $0.00333 |
Grade A, and why
qgis-core-architecture 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.
How it starts
The opening of the file, as written. The whole thing — 384 lines — stays where its author put it; the contents beside it link to each section on GitHub.
qgis-core-architecture
Quick Reference
Core Python Modules (QGIS 3.x)
| Module | Purpose |
|---|---|
qgis.core |
All non-GUI functionality: layers, features, geometry, CRS, project, processing, data providers |
qgis.gui |
GUI components: map canvas (QgsMapCanvas), layer tree view, attribute forms |
qgis.analysis |
Spatial analysis: network analysis, raster calculator, interpolation |
qgis.server |
QGIS Server for OGC web services (WMS, WFS, WCS) |
qgis._3d |
3D map visualization components |
Additional utility modules:
qgis.utils-- Automatically imported in the QGIS Python console; provides helper functionsqgis.PyQt-- Re-exports PyQt5/PyQt6 classes for version-independent imports
Layer Type Hierarchy
| Class | Type Enum | Description |
|---|---|---|
QgsVectorLayer |
VectorLayer |
Points, lines, polygons with attributes |
QgsRasterLayer |
RasterLayer |
Grid-based data (GeoTIFF, WMS, XYZ tiles) |
QgsMeshLayer |
MeshLayer |
Unstructured mesh data (hydrodynamic models) |
QgsPointCloudLayer |
PointCloudLayer |
LiDAR / point cloud data (LAS, LAZ, COPC, EPT) |
QgsAnnotationLayer |
AnnotationLayer |
Freeform annotations on the map |
QgsVectorTileLayer |
VectorTileLayer |
Mapbox Vector Tiles (MVT) |
QgsTiledSceneLayer |
TiledSceneLayer |
3D tiled scenes (3D Tiles, Cesium) |
All layer types inherit from QgsMapLayer. Access the type via layer.type().
Project File Formats
| Format | Extension | Description |
|---|---|---|
| QGS | .qgs |
XML-based project file; human-readable, larger file size |
| QGZ | .qgz |
Compressed ZIP archive containing .qgs and auxiliary data; default since QGIS 3.2 |
Key Dependencies
| Component | Role |
|---|---|
| Qt5 / Qt6 | Application framework (Qt6 in QGIS 4.x) |
| SIP | C++ to Python binding generator (tighter Qt integration than SWIG) |
| PyQt5 / PyQt6 | Python Qt bindings |
| GDAL/OGR | Raster and vector data I/O |
| PROJ | Coordinate reference system transformations |
| GEOS | Geometry operations |
What ships with it
3 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.
- 1mo ago First seen · 384 lines · 113 tokens per session scan A 607af4e766f6
qgis-core-architecture is a skill published in the GitHub repository Impertio-Studio/QGIS-Claude-Skill-Package (36 stars, last pushed 3mo ago), licensed MIT. It adds 113 tokens to every session and 3,331 once invoked, about $0.0005 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 2026-08-30.
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