LangChain

LangChain

Integration pattern:

• wrap tools with Coherence Ops governance
• capture spans/telemetry via callback handler
• stamp episodes automatically

Goal: Every tool/action call becomes budgeted, TTL-gated, verifiable, sealable.

Governance Adapter

The GovernanceCallbackHandler enforces DTE constraints mid-chain. It intercepts on_llm_start, on_tool_start, and on_tool_end callbacks to check budget, TTL, scope, and model allowlists before execution proceeds.

Three violation modes:

• raise -- abort with DTEViolationError
• log -- emit a warning and continue
• degrade -- trigger the Degrade Ladder for a safer fallback

Composes cleanly with ExhaustCallbackHandler -- pass both in the callback list.

See LangChain Governance for full API reference, configuration, and comparison with the LangGraph DTETracker.

Standalone Package

The langchain-deepsigma pip package repackages the enterprise adapters into a standalone distribution with optional AgentSession integration. Install with pip install langchain-deepsigma.

Exports: ExhaustCallbackHandler, GovernanceCallbackHandler, DTEViolationError, LangGraphExhaustTracker, LangGraphConnector.

See SDK Packages for full usage docs.