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-syntax-pyqgis-apigit 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-syntax-pyqgis-api)<a href="https://agentmods.dev/skills/impertio-studio/qgis-claude-skill-package/qgis-syntax-pyqgis-api"><img src="https://agentmods.dev/badge/skills/impertio-studio/qgis-claude-skill-package/qgis-syntax-pyqgis-api/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-syntax-pyqgis-api"><img src="https://agentmods.dev/badge/skills/impertio-studio/qgis-claude-skill-package/qgis-syntax-pyqgis-api.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 | $0.02875 |
| Opus 5.5 | $0.00045 | $0.01150 |
| Sonnet 5.5 | $0.00023 | $0.00575 |
| Haiku 4.5 | $0.00011 | $0.00287 |
Grade A, and why
qgis-syntax-pyqgis-api 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 — 362 lines — stays where its author put it; the contents beside it link to each section on GitHub.
qgis-syntax-pyqgis-api
Quick Reference
Scripting Contexts
| Context | iface Available |
Initialization Required | Use Case |
|---|---|---|---|
| Python Console | Yes | None | Interactive exploration, quick tests |
| Standalone Script | No | QgsApplication([], False) + initQgis() |
CLI tools, CI pipelines, batch processing |
| Processing Script | No (feedback instead) |
None (framework handles it) | Geoprocessing algorithms |
| Plugin | Yes (via classFactory) |
None | GUI extensions, toolbar tools |
Core Classes
| Class | Purpose | Key Methods |
|---|---|---|
QgsFeature |
Single feature (geometry + attributes) | id(), geometry(), attributes(), __getitem__() |
QgsFeatureRequest |
Filter/optimize feature queries | setFilterExpression(), setFilterRect(), setLimit(), setFlags() |
QgsGeometry |
Geometry wrapper with GEOS operations | fromPointXY(), buffer(), intersection(), contains() |
QgsSpatialIndex |
R-tree spatial index | addFeature(), nearestNeighbor(), intersects() |
QgsTask |
Background processing | run(), finished(), setProgress(), isCanceled() |
QgsMessageLog |
Log panel messages | logMessage(msg, tag, level) |
QgsMessageBar |
Map canvas notifications | pushMessage(title, text, level, duration) |
QgsPoint vs QgsPointXY
| Class | Dimensions | Use With |
|---|---|---|
QgsPointXY |
2D (X, Y) only | fromPointXY(), fromPolylineXY(), fromPolygonXY() |
QgsPoint |
2D + Z + M | fromPolyline(), 3D operations |
ALWAYS use QgsPointXY for 2D operations. Use QgsPoint ONLY when Z or M values are required.
Critical Warnings
NEVER modify features outside an edit session. Changes are silently lost or corrupt the data source. ALWAYS use with edit(layer): or manually call startEditing() / commitChanges().
NEVER access iface, QgsProject.instance(), or any Qt widget from QgsTask.run(). These are main-thread objects. Accessing them from a background thread crashes QGIS.
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 · 362 lines · 113 tokens per session scan A bac6039f260f
qgis-syntax-pyqgis-api 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 2,875 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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