System breakdown
Inside Agent Protocol: OpenAPI Control Plane, RFC 8610 CDDL Streaming & Thread Checkpoint Architecture
A production teardown of LangChain Agent Protocol (v0.1.6)—deconstructing the 5-router OpenAPI control plane, thread checkpoint branching, 9-channel RFC 8610 CDDL streaming, subgraph causation edges, and AST topological code generation.
19 min read Verified 2026-09-29 2 primary sources
Canonical System Breakdown
Agent Protocol OpenAPI Control Plane, RFC 8610 CDDL Streaming & Thread Checkpoint Architecture
RELEASE v0.1.6
2 CHAPTERS · 8 NODES · 6 EDGES
Ingress Security
HMAC SHA256
Constant-time verify (<50ms)
Async Queueing
Sidekiq + Redis
Multi-queue priority isolation
Real-time Fanout
ActionCable Pub/Sub
Redis backplane state broadcast
AI Action Engine
ActionService LLM
Streaming copilot replies (SSE)
Core Stack:Rails 7.1•Sidekiq 7•Redis 7.2•PostgreSQL 16•Vue.js 3
5 Verified Architectural Claims
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Archify Interactive Mapv2.16.0
Inside Agent Protocol: OpenAPI Control Plane, RFC 8610 CDDL Streaming & Thread Checkpoint Architecture — Archify Interactive System Map
Hotkeys:R Route ProbeL Role LensP Play StoryS Visual StyleT ThemeF Stage
Source Pinned & Grounded