svitch

DPDP-compliant AI data security for Indian enterprises.
Zero dependencies. Runs locally. Works with any LLM provider.

pip install svitch

PII Detection and Redaction

Detects and redacts Indian PII (Aadhaar, PAN, UPI, IFSC, mobile, GST, bank accounts) and global PII (email, IP) — entirely locally, no network calls.

import svitch

# Detect
entities = svitch.detect("Customer Aadhaar: 2345 6789 0123, PAN: ABCDE1234F")
# [Entity(type='AADHAAR', value='2345 6789 0123', ...), Entity(type='PAN', ...)]

# Redact (token replacement)
result = svitch.redact("Call me on 9876543210, UPI: rahul@okicici")
result.text   # "Call me on [MOBILE_IN], UPI: [UPI_ID]"
result.count  # 2
result.clean  # False

# Redact (partial mask)
result = svitch.redact("Aadhaar: 2345 6789 0123", replacement="mask")
result.text   # "Aadhaar: XXXX XXXX 0123"

Wrap any LLM client

PII is redacted from every prompt before it leaves your network, and from every response before it's stored or displayed.

import svitch, openai

client = svitch.wrap(openai.OpenAI())
# Use exactly like openai.OpenAI() — PII is handled automatically

response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{
        "role": "user",
        "content": "Assess loan for Aadhaar 9876 5432 1098, PAN ABCDE1234F"
        # ↑ redacted to [AADHAAR_IN], [PAN_IN] before reaching OpenAI
    }]
)

Anthropic:

import svitch, anthropic
client = svitch.wrap(anthropic.Anthropic())

Agent Audit Trail

Records every agent decision in an immutable, hash-chained audit log.
Required by DPDP §8 and the RBI FREE AI Framework.

from svitch_tracer import SvitchTracer

tracer = SvitchTracer(agent_id="loan-processor-v2")

with tracer.run() as run:
    run.data_access(
        source="crm",
        fields_accessed=["name", "income", "aadhaar"],
        purpose="loan_processing",
        data_principal_id="CUST-5821",
    )

    run.llm_call(
        provider="openai",
        model="gpt-4o",
        prompt="Assess eligibility for [AADHAAR_IN] applicant",   # already redacted
        response="Eligible. Score: 72/100.",
        redact_pii=True,
    )

    run.decision(
        reason="Score above threshold (70)",
        outcome="approve",
        confidence=0.87,
    )

    # Human-in-the-loop checkpoint — required for high-risk decisions
    run.human_checkpoint(
        question="Approve ₹5L loan for this applicant?",
        approved=True,
        reviewer_id="anand.k",
    )

# Verify the hash chain is intact
valid, err = run.verify()
assert valid, f"Audit chain broken: {err}"

Configuration

export SVITCH_TRACER_URL=https://agent-tracer.vercel.app  # default (hosted)
# or point to your self-hosted Agent Tracer

Supported PII types

License

Apache 2.0 — svitch.ai · DPDP Guide · GitHub