pleno-anonymize 0.2.0

Local-first Japanese PII detection and redaction. SDK + `pleno-anonymize` CLI sharing the same recognizer registry and NER pipeline as the pleno-anonymize server.

pleno-anonymize

Local-first Japanese PII detection and redaction — SDK + CLI.

The package ships:

• A PlenoAnonymize factory that defaults to running Presidio + the spaCy ja_ner_ja / en_ner_en models in-process (no network at scan time).
• An optional remote mode (--base-url / base_url=) that talks to a hosted pleno-anonymize server — same wire protocol as https://pleno-anonymize.fly.dev.
• A filesystem scanner (scan_paths) that walks paths and reports PII per file.
• The pleno-anonymize CLI installed as a [project.scripts] entry — run with uvx pleno-anonymize, pipx run pleno-anonymize, or after pip install pleno-anonymize.

Install

# one-shot via uvx (no install)
uvx pleno-anonymize scan .

# or as a dependency
uv add pleno-anonymize
pip install pleno-anonymize

Requires Python 3.12+.

The first time you scan a language, the matching NER wheel (ja_ner_ja / en_ner_en, hosted on Hugging Face) is fetched and pip-installed into the active environment. Pre-install with:

uvx pleno-anonymize models install ja
uvx pleno-anonymize models install en

Or disable auto-install with --no-auto-download (falls back to a blank tokenizer + pattern recognizers — regex/checksum classes still detect, but free-text NER classes won't).

CLI

pleno-anonymize scan <path...>     # walk paths, detect PII per file
pleno-anonymize analyze [text]     # detect entities in text / stdin / --file
pleno-anonymize redact  [text]     # replace detected PII with <PLACEHOLDERS>
pleno-anonymize models {install,status}
pleno-anonymize health             # ping --base-url (remote mode only)

Common flags:

Flag	Description
--base-url <url>	Use a hosted endpoint instead of running locally (env: PLENO_ANONYMIZE_BASE_URL)
--api-key <key>	Bearer token for --base-url (env: PLENO_ANONYMIZE_API_KEY)
--language ja|en	Detection language (default ja)
--entities A,B,C	Restrict to specific entity types
--no-auto-download	Do not pip-install missing NER wheels (local mode only)
--json	Emit JSON
--fail-on-findings	Exit 2 from scan when PII is found (CI gate)
--workers <n>	Parallel scan workers (default 4)
--max-bytes <n>	Per-file byte cap for scan (default 262144)
--ignore a,b	Extra directory names to skip
--ext .md,.py	Restrict scan to extensions
-f, --file <path>	Read input text from file

Examples

# scan the current repo locally, fail CI on any finding
uvx pleno-anonymize scan . --fail-on-findings

# analyze a Japanese string with the local model
echo "山田太郎 090-1234-5678 [e-mail]" \
  | uvx pleno-anonymize analyze --language ja

# same call, but offload to the hosted server
echo "山田太郎 090-1234-5678" \
  | uvx pleno-anonymize analyze \
      --base-url https://pleno-anonymize.fly.dev

# redact and pipe to file
uvx pleno-anonymize redact -f notes.md > notes.redacted.md

# JSON output for tooling
uvx pleno-anonymize scan src --json | jq '.byEntity'

SDK

from pleno_anonymize import PlenoAnonymize, scan_paths

# default: local engine, auto-downloads ja_ner_ja on first call
engine = PlenoAnonymize()
findings = engine.analyze("山田太郎 090-1234-5678", language="ja")
# [Finding(entity_type='PERSON', start=0, end=4, score=0.85, text='山田太郎'), ...]

result = engine.redact("Contact [e-mail]", language="en")
# RedactResult(text='Contact <EMAIL_ADDRESS>')

summary = scan_paths(
    engine,
    ["src", "docs"],
    language="ja",
    ignore=["fixtures"],
    on_file=lambda f: f.findings and print(f.path, len(f.findings)),
)
print(summary.by_entity, summary.total_findings)

# remote mode — same surface, no local model footprint
remote = PlenoAnonymize(base_url="https://pleno-anonymize.fly.dev")
remote.analyze("...")

API surface

Export	Purpose
PlenoAnonymize(base_url=None, ...)	Factory: returns LocalEngine (default) or RemoteEngine
LocalEngine	In-process Presidio + spaCy + recognizer registry
RemoteEngine	HTTP client (stdlib urllib) for a hosted server
PlenoAnonymizeError	Raised by RemoteEngine on HTTP / transport failures
scan_file(engine, path, ...)	Analyze a single file
scan_paths(engine, paths, ...)	Walk paths with worker pool, return ScanSummary
Finding, RedactResult, FileScanResult, ScanSummary	Dataclasses

Environment variables

Var	Purpose
PLENO_ANONYMIZE_BASE_URL	Default --base-url
PLENO_ANONYMIZE_API_KEY	Default --api-key
NO_COLOR	Disable ANSI colors in CLI output

Detected entities

Free-text NER (PERSON, ADDRESS, ORGANIZATION, DATE_OF_BIRTH, BANK_ACCOUNT) and structured / regex+checksum classes (PHONE_NUMBER, MY_NUMBER, MY_NUMBER_CORPORATE, CREDIT_CARD, PASSPORT, DRIVER_LICENSE, HEALTH_INSURANCE, RESIDENCE_CARD, POSTAL_CODE, EMAIL_ADDRESS, IP_ADDRESS, URL).

See the server README for the full list.

Exit codes (CLI)

Code	Meaning
0	Success
1	Usage / runtime error
2	scan --fail-on-findings and findings were detected

License

AGPL-3.0