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The moment you expose a query engine as a tool, RAG stops being a fixed pipeline and becomes a decision: the agent decides whether to retrieve, from which source, and whether one search was enough. That is agentic RAG, and it's built into LlamaIndex.
The moment you expose a query engine as a tool, RAG stops being a fixed pipeline and becomes a decision: the agent decides whether to retrieve, from which source, and whether one search was enough. That is agentic RAG.
Crews give agents autonomy, which is powerful and unpredictable; Flows give you back deterministic control — an event-driven engine where you decide exactly what runs when, with crews slotted in only where autonomy is actually wanted.
Crews give agents autonomy, which is powerful and unpredictable; Flows give you back deterministic control — an event-driven engine where you decide exactly what runs when, with crews slotted in only where autonomy is wanted.
The most common question about the two big agent protocols is which one to use — and the answer is almost always "both," because they solve different problems: MCP connects an agent to its tools, A2A connects an agent to other agents.
The most common question about the two big agent protocols is which to use — and the answer is almost always both, because MCP connects an agent to its tools and A2A connects an agent to other agents.
In an event-driven system your events are a public API that outlives every service that reads them, so how you shape them and how you evolve them without breaking consumers is not a detail — it is the contract the whole architecture rests on.
In an event-driven system your events are a public API that outlives every service that reads them, so how you shape and evolve them without breaking consumers is the contract the whole architecture rests on.
The deepest form of self-evolution is recursive: not an agent that improves its answers, but an agent that improves the process that improves agents — a system reaching up a level to modify itself.
The deepest form of self-evolution is recursive: not an agent that improves its answers, but an agent that improves the process that improves agents — a system reaching up a level to modify itself.
The two systems everyone builds — retrieval-augmented generation and tool-using agents — are where DSPy's declarative approach pays off most, because they are exactly the multi-step pipelines whose prompts are hardest to tune by hand.
RAG and tool-using agents are where DSPy's declarative approach pays off most — they are exactly the multi-step pipelines whose prompts are hardest to tune by hand.
Responsible-AI principles written in a policy do nothing; the work of this phase is turning fairness, transparency, explainability, and human oversight into features the running system actually has.
Responsible-AI principles in a policy do nothing; this phase turns fairness, transparency, explainability, and human oversight into features the running system actually has. Phase 9.
Every agentic technique in this series adds cost and complexity, so the only way to know any of it is worth it is to measure — and RAG needs measurement on two fronts at once: did it retrieve the right things, and did it answer faithfully from them?
Every agentic technique adds cost, so the only way to know it is worth it is to measure — and RAG needs measurement on two fronts: did it retrieve the right things, and did it answer faithfully from them?
You cannot manage what you cannot see, and the difference between a team that controls its AI spend and one that is surprised by it is almost always whether they measure cost per feature, per user, and per call.
You cannot manage what you cannot see. The difference between a team that controls its AI spend and one surprised by it is whether they measure cost per feature, per user, and per call.
Everything in this series — the budget, the system prompt, retrieval, memory, tools, and compaction — comes together as a pipeline that assembles the right window on every single turn, deliberately rather than by accident.
The budget, system prompt, retrieval, memory, tools, and compaction come together as a pipeline that assembles the right window on every turn — deliberately rather than by accident.
The two protocols people keep pitting against each other are actually two halves of the same architecture — MCP gives an agent its tools, A2A gives it collaborators, and real systems need both.
MCP gives an agent its tools, A2A gives it collaborators, and real systems need both. How the two protocols compose — tools within an agent, agents between — in one architecture.
Most of this blog's AI content sits on top of machine learning without ever defining it. This series fixes that from the ground up: before transformers and LLMs, before fine-tuning and RAG, there is the plain idea of a program that improves at a task by learning patterns from data instead of being explicitly told the rules. Understanding that idea — and its three core flavors — is the foundation everything else in modern AI is built on.
Before transformers and LLMs there is the plain idea of a program that learns patterns from data instead of being told the rules. What machine learning is, the vocabulary (features, model, training, generalization), and the three paradigms — supervised, unsupervised, reinforcement — the whole AI stack is built on.