presidio yaml-config.instructions.md

Repository guidance for the YAML configuration and validation layer, which turns human-written settings into Presidio objects and checks their values.

In plain words
What is it for?
Use it when changing YAML schemas, configuration loaders, validation models, constructors, or shipped configuration files.
Why use it?
It prevents settings from being silently ignored, breaking older configuration files, or failing with unclear errors.

Instructions file for GitHub Copilot

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.

agentmods
npx agentmods add instructions/data-privacy-stack/presidio/yaml-config
Clone the repo
git clone --depth 1 https://github.com/data-privacy-stack/presidio

Made for: GitHub Copilot.

Per session 1,345 This file is loaded in full into every session.
When invoked 1,345 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.01345 $0.01345
Opus 5 $0.00673 $0.00673
Sonnet 5 $0.00269 $0.00269
Haiku 4.5 $0.00135 $0.00135

Measured 2d ago against content hash f1b3c94eb1b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

presidio yaml-config.instructions.md 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 2d 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/instructions/yaml-config.instructions.md · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.

YAML configuration & pydantic validation layer

Rules for the layer that translates YAML configuration into Presidio instances: the pydantic models in presidio_analyzer/input_validation/ (yaml_recognizer_models.py, schemas.py), the loaders in recognizer_registry/, and the shipped configs in conf/.

This layer is a public contract. YAML files written by users years ago must keep parsing, and every field a user can write must actually reach the object it configures. When reviewing, lead with:

  1. A YAML-reachable field that silently goes nowhere (schema/constructor drift).
  2. A change that makes existing YAML files stop parsing or change meaning.
  3. A validation failure surfacing as a distant TypeError instead of a parse-time error with an actionable message.

Schema/constructor sync

Every constructor parameter that should be settable from YAML needs a matching pydantic field. In every contribution, check that constructor parameters and schema fields have not drifted apart — a mismatch means a value a user writes in YAML never reaches the object, or reaches it unvalidated. As of today the consequence is silent: PredefinedRecognizerConfig ignores unknown YAML keys, so a constructor kwarg without a schema field is dropped without any error and the recognizer falls back to its defaults (the failure LangExtractRecognizerConfig exists to prevent; see its docstring). Even if that extra behavior changes, the no-mismatch rule stands.

  • A recognizer whose constructor takes model-specific kwargs needs a dedicated config model registered in CONFIG_MODEL_MAP (keyed by class_name or name), following HuggingFaceRecognizerConfig / GLiNERRecognizerConfig / LangExtractRecognizerConfig.
  • When a PR adds a constructor parameter to a recognizer that already has a config model, require the matching field in that model — otherwise YAML users cannot set it and get no error telling them so.

extra must be a deliberate choice

  • extra="forbid" for closed configs (TextChunkerConfig, RecognizerRegistryConfig): typos fail fast at parse time with a clear message.
  • extra="allow" for pass-through configs whose kwargs flow to a constructor (HuggingFace, GLiNER, LangExtract).
  • Flag a new model that leaves pydantic's default (extra="ignore") without justification — silent ignoring is almost never the intended behavior.

Read the full file on GitHub · 109 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. 2d ago First seen · 109 lines · 1,345 tokens per session scan A f1b3c94eb1b0

Subscribe to this mod's changes

presidio yaml-config.instructions.md is an instructions file published in the GitHub repository data-privacy-stack/presidio (10,706 stars, last pushed 2d ago), licensed MIT. It adds 1,345 tokens to every session, about $0.0067 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 2026-08-31.

Related

Other instructions, from other repositories