Works with your entire stack

import { Kontext } from 'kontext-sdk';
import { CallbackHandler } from '@kontext/langchain';

const ctx = new Kontext({ apiKey: process.env.KONTEXT_KEY });

// Automatic logging for every LLM call and tool use
const kontextHandler = new CallbackHandler(ctx, {
  logLLMCalls: true,
  logToolUse: true,
  logRetrieval: true,
});

// Attach to any LangChain chain or agent
const agent = new AgentExecutor({
  agent,
  tools,
  callbacks: [kontextHandler],
});

// Every LLM call, tool invocation, and retrieval
// is automatically logged to your Kontext audit trail
const result = await agent.invoke({
  input: 'Transfer 500 USDC to vendor 0x1234',
});

// Query the audit trail
const trail = await ctx.export({
  agent: 'langchain-agent',
  format: 'json',
});

import { Kontext } from 'kontext-sdk';

const ctx = new Kontext({ apiKey: process.env.KONTEXT_KEY });

// AutoGen message interceptor for multi-agent conversations
function kontextMiddleware(ctx) {
  return {
    async processMessage(sender, receiver, message) {
      // Log every agent-to-agent message
      await ctx.log({
        action: 'autogen_message',
        agent: sender.name,
        metadata: {
          receiver: receiver.name,
          messageType: message.type,
          content: message.content?.substring(0, 500),
        },
      });

      // Verify transaction decisions
      if (message.metadata?.isTransaction) {
        const result = await ctx.verify({
          action: 'autogen_transaction_decision',
          amount: message.metadata.amount,
          currency: message.metadata.currency,
          agent: sender.name,
          metadata: {
            receiver: receiver.name,
            conversationId: message.conversation_id,
            reasoning: message.metadata.reasoning,
          },
        });

        if (result.flagged) {
          return {
            ...message,
            blocked: true,
            reason: 'Kontext compliance check failed',
          };
        }
      }

      return message;
    },
  };
}