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# langchain

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Your AI Agent Can Think. But Can It Pay?

Your AI Agent Can Think. But Can It Pay?

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6 min read
6 Ways Your AI Agent Fails Silently (With Code to Catch Each One)
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6 Ways Your AI Agent Fails Silently (With Code to Catch Each One)

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4 min read
Self Querying Retrieval
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Self Querying Retrieval

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4 min read
EU AI Act + LangChain: What You Actually Need to Build Before August 2026
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EU AI Act + LangChain: What You Actually Need to Build Before August 2026

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3 min read
Testing LangChain Agents with Agentest: Mocks, Trajectories, and LLM-as-Judge
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Testing LangChain Agents with Agentest: Mocks, Trajectories, and LLM-as-Judge

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8 min read
Your agent's guardrails are suggestions, not enforcement
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Your agent's guardrails are suggestions, not enforcement

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4 min read
LangChain fundamentals: the mental model that makes everything click

LangChain fundamentals: the mental model that makes everything click

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2 min read
Sentence Window Retrieval
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Sentence Window Retrieval

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4 min read
pen Source Project of the Day (Part 23): PageLM - Open-Source AI Education Platform, Turning Learning Materials into Interactive Resources

pen Source Project of the Day (Part 23): PageLM - Open-Source AI Education Platform, Turning Learning Materials into Interactive Resources

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6 min read
Hybrid search inside SurrealDB: one query, vector + keyword + RRF
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Hybrid search inside SurrealDB: one query, vector + keyword + RRF

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9 min read
Give Your LangChain or CrewAI Agent 250+ Data Capabilities in 3 Lines of Code

Give Your LangChain or CrewAI Agent 250+ Data Capabilities in 3 Lines of Code

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3 min read
Agentest: Vitest-style e2e testing for AI Agents

Agentest: Vitest-style e2e testing for AI Agents

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5 min read
PIIGhost: a Python library for PII anonymization in LLM agents
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PIIGhost: a Python library for PII anonymization in LLM agents

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10 min read
Waxell vs. LangSmith: When You Need a Control Plane, Not a Dashboard
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Waxell vs. LangSmith: When You Need a Control Plane, Not a Dashboard

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8 min read
LangChain Payment Integration: How to Make Your Chain Earn USDC

LangChain Payment Integration: How to Make Your Chain Earn USDC

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2 min read
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