drift: Skill for Claude Code

.github/skills/guard-src-drift-ingestion/SKILL.md

guard-src-drift-ingestion is a skill for Claude Code from mick-gsk/drift. It costs 90 tokens per session (1,102 once invoked), scanned A, original, MIT.

A project-specific guard for the Drift code-analysis system’s data-ingestion code. This code finds files, reads source code and Git history, and imports external reports.

In plain words
What is it for?
Use it when changing file discovery, Python or TypeScript parsing, Git history or blame handling, external report imports, or support for a new language format.
Why use it?
It helps prevent one part of the ingestion layer from taking on unrelated jobs or silently producing incorrect analysis results. The guard is triggered by recurring Drift findings named AVS, EDS, and PFS.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

This is mick-gsk/drift's own configuration. It tells Claude Code how to work on drift itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything drift configures →

Part of the drift plugin — 31 skills, 17 agents shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to mick-gsk/drift. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/mick-gsk/drift/main/.github/skills/guard-src-drift-ingestion/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/mick-gsk/drift

Made for: Claude Code.

Or install drift, the plugin that ships this one along with the rest of its 31 skills, 17 agents.

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README.md
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Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,102 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 $0.00090 $0.01102
Opus 5 $0.00045 $0.00551
Sonnet 5 $0.00018 $0.00220
Haiku 4.5 $0.00009 $0.00110

Measured 10d ago against content hash 00ff87f41808, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

guard-src-drift-ingestion 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 10d 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.

.github/skills/guard-src-drift-ingestion/SKILL.md · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Guard: src/drift/ingestion

src/drift/ingestion ist die Datenerfassungsschicht: file_discovery.py findet Dateien, ast_parser.py und ts_parser.py parsen Code, git_history.py und git_blame.py lesen Commit-Historie, external_report.py importiert SARIF/externe Reports. Jede Datei hat eine klar abgegrenzte Aufgabe — AVS, EDS und PFS entstehen wenn diese Grenzen verschwimmen.

Konfidenz: 0.95 — Ingestion-Fehler propagieren still und erzeugen falsche Negatives in jedem Signal.

When To Use

  • Du aenderst wie Dateien gefunden, gefiltert oder gelesen werden (file_discovery.py)
  • Du erweiterst den AST-Parser fuer neue Python-Konstrukte oder Tree-sitter-Nodes
  • Du veraenderst wie Git-Commits oder Blame-Daten eingelesen werden
  • Du fuegest Unterstuetzung fuer ein neues Sprachformat hinzu
  • Drift meldet AVS, EDS oder PFS fuer Dateien in src/drift/ingestion/

Warum dieses Modul kritisch ist

Signal Ursache in ingestion/
AVS ast_parser.py zaehlt Aufgaben: parsen + normalisieren + Metadaten extrahieren + Fehlerbehandlung — zu viele Verantwortlichkeiten
EDS Git-Commit-Logik und AST-Traversierung teilen sich Zustand oder Helper — erzeugt unverstaendliche Kopplung
PFS Python-Parsing und TypeScript-Parsing haben unterschiedliche Fehlerbehandlungs- und Rueckgabemuster

Core Rules

  1. Strikte Trennung der Ingestion-Stufen — Datei-Entdeckung (file_discovery.py) darf NICHT parsen. Parser duerfen NICHT Git-History lesen. Jede Ingestion-Stufe erhaelt ihre Daten als Parameter, nicht durch direkten Aufruf einer anderen Stufe.

  2. ParseResult ist das einzige Ausgabeformat der Parserast_parser.py und ts_parser.py geben ausschliesslich ParseResult-Objekte zurueck. Kein direktes Schreiben in Dictionaries oder nakedObjects.

  3. Fehler in Parsern sind ParseResult mit error-Status — nie raise ohne Wrapper in Parsern. Ein fehlerhafter Parse erzeugt ein ParseResult(status='error', ...), kein unbehandeltes Exception.

Read the full file on GitHub · 61 lines

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. 10d ago First seen · 61 lines · 90 tokens per session scan A 00ff87f41808

Subscribe to this mod's changes

guard-src-drift-ingestion is a skill published in the GitHub repository mick-gsk/drift (15 stars, last pushed 1mo ago), licensed MIT. It adds 90 tokens to every session and 1,102 once invoked, about $0.0005 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 2026-08-30.

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