atc-voice-agent-architecture

Documents architecture patterns for building voice agents, microservices, Redis caching, and LangGraph state machines.

Updated Sep 1, 2026
One-click install
npx skills add https://github.com/sshekhar-04/SIH_PS_26151 --skill atc-voice-agent-architecture-sshekhar-04
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: atc-voice-agent-architecture
Source: https://github.com/sshekhar-04/SIH_PS_26151/tree/main/.agents/Skills/atc-voice-agent-architecture
Command: npx skills add https://github.com/sshekhar-04/SIH_PS_26151 --skill atc-voice-agent-architecture-sshekhar-04

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve? Building real-time voice AI platforms requires solving hard distributed-systems problems: sub-second voice turn latency, stateless token verification across microservices, stateful conversational turn management, and grounded regulatory answers. This Skill provides a complete architectural blueprint with reference guides and copy-pasteable code patterns extracted from a production ATC voice simulator platform. ## Core Features & Use Cases - 7-Layer Redis Caching Engine: Reduce voice pipeline latency from ~2,600ms to under 280ms using layered caches for embeddings, RAG grounding, session state, JWKS keys, rate limiting, and TTS audio. - Zero-Trust RS256/JWKS Authentication: Implement asymmetric JWT signing, stateless public-key verification with key rotation, and rotating refresh token families with replay-attack detection. - LangGraph Voice State Machine: Orchestrate half-duplex push-to-talk turns using interrupt boundaries, additive transcript reducers, and fuzzy slot validation. - Use Case: When architecting a new voice-driven AI service, apply the microservice monorepo pattern (server.js vs app/app.js separation, per-service MongoDB isolation, K8s probes) and the 4-layer React frontend pattern (Components → Hooks → Services → Redux slices) to structure the codebase. ## Quick Start Ask the AI to design a low-latency voice agent backend using the 7-layer Redis caching pattern and LangGraph interrupt boundaries from this architecture skill.

Frequently Asked Questions about atc-voice-agent-architecture

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I reduce voice agent latency below 300ms?

Use a multi-layer Redis caching strategy: cache template embeddings and RAG grounding results, render known templates in memory instead of calling the LLM, and cache TTS audio by SHA-256 hash of the text. This reduces a ~2,600ms pipeline to under 280ms.

How do I implement LangGraph interrupt boundaries for voice turns?

Compile the StateGraph with a checkpointer and set interruptBefore to the node that waits for user input, such as awaitReadback. The graph pauses after the agent speaks, then resumes when the pilot transcript arrives via the same thread_id.

How does refresh token rotation with replay detection work?

Each refresh token is stored as a SHA-256 hash with a familyId and marked used after one rotation. If a used token is presented again, all tokens in that family are deleted, revoking every session in the compromised chain.

Can downstream microservices verify JWTs without the private key?

Yes. With RS256 asymmetric signing, only the Auth service holds the private key. Downstream services fetch public keys from the JWKS endpoint, cache them for 24 hours, and verify tokens locally with zero inter-service calls.

Why should Redux slices not contain async thunks?

In the 4-layer frontend pattern, slices hold only synchronous reducers for UI state. Async orchestration belongs in custom hooks, keeping state mutations predictable and separating API concerns into the service layer.

What are the limitations of template fast-pathing in voice agents?

Template rendering only works when a turn matches a predefined template with all slots resolved. General questions or complex corrections still require LLM fallback, so the system must maintain both paths and route between them.