Pietro

I code and sell things.

[Andy Coenen @_coenen]

I wanted to share something I built over the last few weeks: https://t.co/QRqMK9CpTR is a massive isometric pixel art map of NYC, built with nano banana and coding agents.

I didn't write a single line of code.

[Karthik @karthikponna19]

can't believe we lost our jobs to this

[Andrej Karpathy @karpathy]

Agency > Intelligence

I had this intuitively wrong for decades, I think due to a pervasive cultural veneration of intelligence, various entertainment/media, obsession with IQ etc. Agency is significantly more powerful and significantly more scarce. Are you hiring for agency? Are we educating for agency? Are you acting as if you had 10X agency?

Grok explanation is ~close:

“Agency, as a personality trait, refers to an individual's capacity to take initiative, make decisions, and exert control over their actions and environment. It’s about being proactive rather than reactive—someone with high agency doesn’t just let life happen to them; they shape it. Think of it as a blend of self-efficacy, determination, and a sense of ownership over one’s path.

People with strong agency tend to set goals and pursue them with confidence, even in the face of obstacles. They’re the type to say, “I’ll figure it out,” and then actually do it. On the flip side, someone low in agency might feel more like a passenger in their own life, waiting for external forces—like luck, other people, or circumstances—to dictate what happens next.

It’s not quite the same as assertiveness or ambition, though it can overlap. Agency is quieter, more internal—it’s the belief that you *can* act, paired with the will to follow through. Psychologists often tie it to concepts like locus of control: high-agency folks lean toward an internal locus, feeling they steer their fate, while low-agency folks might lean external, seeing life as something that happens *to* them.”

[Pietro @peetrio]

@mjkayum Send

[Pietro @peetrio]

Webhook → Background → PDP → LangGraph ainvoke (Mongo threads) → Twilio. Idempotent, scalable.

Main agent + MCP agents w/ PDP = game-changing security.

what's your policy trick? Repost if vibes! 🤓 @langchain #ML

[Pietro @peetrio]

Hey devs! 🚀 Cooking agent security via granular policies thanks to PDP (Policy Decision Point) setup.

Fine-grained control over tools in LangGraph, no rogue access! Using a main LangGraph agent that calls MCP agents/tools, with PDP baked in for checks.
Quick thread: flows and YAML.
#AIAgents #LangGraph #AISecurity

[Pietro @peetrio]

YAML for granular policies (love the flex)

Hot-reload? Hash rebuilds agents.