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feat(ai): integrate AWS Comprehend utility for PII redaction (#290) #809

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feat(ai): integrate AWS Comprehend utility for PII redaction (#290) #809

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e2d285d
feat(ai): integrate AWS Comprehend utility for PII redaction (#290)
wuliangshangren Nov 7, 2026
de1e588
feat(ai): add PromptRedactionObservable and full working example
wuliangshangren Nov 7, 2026
8392d96
feat(ai): add AwsComprehendRedactor core implementation
wuliangshangren Nov 7, 2026
4230712
test(ai): add comprehensive test suite for AwsComprehendRedactor
wuliangshangren Nov 7, 2026
af079e7
chore: retrigger checks after CLA signature
wuliangshangren Nov 7, 2026
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6 changes: 1 addition & 5 deletions JS/edgechains/arakoodev/src/ai/src/index.ts
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export { OpenAI } from "./lib/openai/openai.js";
export { GeminiAI } from "./lib/gemini/gemini.js";
export { LlamaAI } from "./lib/llama/llama.js";
export { RetellAI } from "./lib/retell-ai/retell.js";
export { RetellWebClient } from "./lib/retell-ai/retellWebClient.js";
export * from "./lib/comprehend/index.js";
12 changes: 12 additions & 0 deletions JS/edgechains/arakoodev/src/ai/src/lib/comprehend/README.md
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# AWS Comprehend PII Redactor for EdgeChains

Utility for detecting and redacting Personally Identifiable Information (PII) using AWS Comprehend with observable pipeline chaining.

## Features

- **Injectable Client**: Inversion-of-control client injection for testing and zero-cloud environments.
- **SigV4 REST Signing**: Built-in AWS Signature Version 4 signer using native Node.js crypto.
- **Span-based Redaction**: Deterministic redaction using character offsets, eliminating drift issues.
- **Multiple Redaction Modes**: `REPLACE_LABEL`, `MASK`, `REMOVE`, and custom replacer functions.
- **Observable Chaining**: `PromptRedactionObservable` for pipeline transformation and integration with EdgeChains chat endpoints.
- **Local Fallback**: Regex-based local PII fallback rules for development and testing.
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