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Version: 2.28

Presidio

haystack_integrations.components.extractors.presidio.presidio_entity_extractor​

PresidioEntityExtractor​

Detects PII entities in Haystack Documents using Microsoft Presidio Analyzer.

See Presidio Analyzer for details.

Accepts a list of Documents and returns new Documents with detected PII entities stored in each Document's metadata under the key "entities". Each entry in the list contains the entity type, start/end character offsets, and the confidence score.

Original Documents are not mutated. Documents without text content are passed through unchanged.

The analyzer engine is loaded on the first call to run(), or by calling warm_up() explicitly beforehand.

Usage example​

python
from haystack import Document
from haystack_integrations.components.extractors.presidio import PresidioEntityExtractor

extractor = PresidioEntityExtractor()
result = extractor.run(documents=[Document(content="Contact Alice at alice@example.com")])
print(result["documents"][0].meta["entities"])
# [{"entity_type": "PERSON", "start": 8, "end": 13, "score": 0.85},
#  {"entity_type": "EMAIL_ADDRESS", "start": 17, "end": 34, "score": 1.0}]

init​

python
__init__(
    *,
    language: str = "en",
    entities: list[str] | None = None,
    score_threshold: float = 0.35
) -> None

Initializes the PresidioEntityExtractor.

Parameters:

  • language (str) – Language code for PII detection. Defaults to "en". See Presidio supported languages.
  • entities (list[str] | None) – List of PII entity types to detect (e.g. ["PERSON", "EMAIL_ADDRESS"]). If None, all supported entity types are detected. See Presidio supported entities.
  • score_threshold (float) – Minimum confidence score (0-1) for a detected entity to be included. Defaults to 0.35. See Presidio analyzer documentation.

warm_up​

python
warm_up() -> None

Initializes the Presidio analyzer engine.

This method loads the underlying NLP models. In a Haystack Pipeline, this is called automatically before the first run.

run​

python
run(documents: list[Document]) -> dict[str, list[Document]]

Detects PII entities in the provided Documents.

Parameters:

  • documents (list[Document]) – List of Documents to analyze for PII entities.

Returns:

  • dict[str, list[Document]] – A dictionary with key documents containing Documents with detected entities stored in metadata under the key "entities".

haystack_integrations.components.preprocessors.presidio.presidio_document_cleaner​

PresidioDocumentCleaner​

Anonymizes PII in Haystack Documents using Microsoft Presidio.

Accepts a list of Documents, detects personally identifiable information (PII) in their text content, and returns new Documents with PII replaced by entity type placeholders (e.g. <PERSON>, <EMAIL_ADDRESS>). Original Documents are not mutated.

Documents without text content are passed through unchanged.

The analyzer and anonymizer engines are loaded on the first call to run(), or by calling warm_up() explicitly beforehand.

Usage example​

python
from haystack import Document
from haystack_integrations.components.preprocessors.presidio import PresidioDocumentCleaner

cleaner = PresidioDocumentCleaner()
result = cleaner.run(documents=[Document(content="My name is John and my email is john@example.com")])
print(result["documents"][0].content)
# My name is <PERSON> and my email is <EMAIL_ADDRESS>

init​

python
__init__(
    *,
    language: str = "en",
    entities: list[str] | None = None,
    score_threshold: float = 0.35
) -> None

Initializes the PresidioDocumentCleaner.

Parameters:

  • language (str) – Language code for PII detection. Defaults to "en". See Presidio supported languages.
  • entities (list[str] | None) – List of PII entity types to detect and anonymize (e.g. ["PERSON", "EMAIL_ADDRESS"]). If None, all supported entity types are used. See Presidio supported entities.
  • score_threshold (float) – Minimum confidence score (0-1) for a detected entity to be anonymized. Defaults to 0.35. See Presidio analyzer documentation.

warm_up​

python
warm_up() -> None

Initializes the Presidio analyzer and anonymizer engines.

This method loads the underlying NLP models. In a Haystack Pipeline, this is called automatically before the first run.

run​

python
run(documents: list[Document]) -> dict[str, list[Document]]

Anonymizes PII in the provided Documents.

Parameters:

  • documents (list[Document]) – List of Documents whose text content will be anonymized.

Returns:

  • dict[str, list[Document]] – A dictionary with key documents containing the cleaned Documents.

haystack_integrations.components.preprocessors.presidio.presidio_text_cleaner​

PresidioTextCleaner​

Anonymizes PII in plain strings using Microsoft Presidio.

Accepts a list of strings, detects personally identifiable information (PII), and returns a new list of strings with PII replaced by entity type placeholders (e.g. <PERSON>). Useful for sanitizing user queries before they are sent to an LLM.

The analyzer and anonymizer engines are loaded on the first call to run(), or by calling warm_up() explicitly beforehand.

Usage example​

python
from haystack_integrations.components.preprocessors.presidio import PresidioTextCleaner

cleaner = PresidioTextCleaner()
result = cleaner.run(texts=["Hi, I am John Smith, call me at 212-555-1234"])
print(result["texts"][0])
# Hi, I am <PERSON>, call me at <PHONE_NUMBER>

init​

python
__init__(
    *,
    language: str = "en",
    entities: list[str] | None = None,
    score_threshold: float = 0.35
) -> None

Initializes the PresidioTextCleaner.

Parameters:

  • language (str) – Language code for PII detection. Defaults to "en". See Presidio supported languages.
  • entities (list[str] | None) – List of PII entity types to detect and anonymize (e.g. ["PERSON", "PHONE_NUMBER"]). If None, all supported entity types are used. See Presidio supported entities.
  • score_threshold (float) – Minimum confidence score (0-1) for a detected entity to be anonymized. Defaults to 0.35. See Presidio analyzer documentation.

warm_up​

python
warm_up() -> None

Initializes the Presidio analyzer and anonymizer engines.

This method loads the underlying NLP models. In a Haystack Pipeline, this is called automatically before the first run.

run​

python
run(texts: list[str]) -> dict[str, list[str]]

Anonymizes PII in the provided strings.

Parameters:

  • texts (list[str]) – List of strings to anonymize.

Returns:

  • dict[str, list[str]] – A dictionary with key texts containing the cleaned strings.