A3S CodeExamples
Security
Input taint tracking and output sanitization
Security
The SecurityProvider extension point intercepts every user prompt and LLM response to detect and redact sensitive data.
The built-in DefaultSecurityProvider detects common patterns: API keys, tokens, passwords, SSNs, credit card numbers, and email addresses.
Enable Default Security
import { DefaultSecurityProvider } from '@a3s-lab/code';
const session = agent.session('/my-project', {
permissive: true,
securityProvider: new DefaultSecurityProvider(),
});
const result = await session.send('Review this config file');
console.log(result.text); // sensitive patterns redactedRun: npx ts-node examples/test_advanced_features.ts
Source: sdk/node/examples/test_advanced_features.ts
from a3s_code import SessionOptions, DefaultSecurityProvider
opts = SessionOptions()
opts.security_provider = DefaultSecurityProvider()
session = agent.session("/my-project", options=opts)
result = session.send("Review this config file")
print(result.text) # sensitive patterns redactedRun: python examples/test_advanced_features.py
Source: sdk/python/examples/test_advanced_features.py
Custom Security Provider
import { DefaultSecurityProvider } from '@a3s-lab/code';
// Custom security providers are implemented in Rust.
// Use securityProvider: new DefaultSecurityProvider() for the built-in provider.
const session = agent.session('/my-project', {
securityProvider: new DefaultSecurityProvider(),
});from a3s_code import DefaultSecurityProvider
# Custom security providers are implemented in Rust.
# Use DefaultSecurityProvider() for the built-in provider,
# or implement SecurityProvider in Rust and expose via FFI.
opts = SessionOptions()
opts.security_provider = DefaultSecurityProvider()
session = agent.session("/my-project", options=opts)What Gets Redacted
The DefaultSecurityProvider detects and redacts:
Prop
Type
For full security configuration, see Security.
API Reference
SessionOptions
Prop
Type
SecurityProvider trait (Rust)
Prop
Type
DefaultSecurityProvider redaction patterns
Prop
Type