Dev Leonardo (@DevLeonardo) on YouTube

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Dev Leonardo is a creator on YouTube in the 9K–10K follower range, publishing for Frontend web developers and GitHub power users focused on modern JS/TS frameworks and AI coding assistants, based in Italy. Profile last checked 2026-07-25.

Observed facts (from the public profile):

Profile bio

Hello! I'm Leonardo and talk about Open Source, Web Development, and GitHub - I'm a Frontend Developer, GitHub Star ...

What this creator posts about, and who reads it (AI-inferred)

Recurring topics: TanStack Start/Router/Table/Query, GitHub Copilot advanced features and agents, TypeScript type-level testing, VS Code productivity and GitHub workflows, Supabase integration with modern web stacks

Audience: Frontend web developers and GitHub power users focused on modern JS/TS frameworks and AI coding assistants

Provenance: inferred by AI from public content, not stated by the creator — confidence 0.75 · read from 48 recent posts · updated 79 days ago.

Audience read from this creator’s own recent posts, not from platform-declared categories. It is our reading, and it can be wrong.

Recent content samples (what the inference above was drawn from)

Telling my custom agent to ask me questions when in doubt

A prompt to create skills

The Best Tool for Coding Agents

Switch between VS Code projects super fast

Where this creator sits among comparable accounts

Compared with the 1,605 accounts in the same group (youtube · nano · software):

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Creators next to this one by follower tier in the same slice. Each link opens that creator’s public profile — what they post about and who reads it, with no contact details.

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Machine-readable representations

Structured twins of this page for AI and agents — every inferred field carries its source, confidence and freshness.

• /kol/youtube/DevLeonardo.json
• /kol/youtube/DevLeonardo.md

AI retrieval activity

What AI systems have actually done with this page. The two kinds are counted separately: being indexed is not the same as being used.