# Dev Leonardo (@DevLeonardo) on youtube

- id: koinon:creator:youtube_devleonardo
- url: https://koinonlink.com/kol/youtube/DevLeonardo
- schema_version: 1.4

## Identity
- platform: youtube
- handle: DevLeonardo
- platform_url: https://www.youtube.com/@DevLeonardo
- country: Italy
- entity_type: creator
- person_id: Cross-platform identity not resolved for this creator.

## Reach
- followers: 9870
- posts_observed: 4
- verified: false
- size_tier: nano

## Engagement
- status: not_collected
- status_note: Engagement has not been collected for this creator yet. This is a gap in our collection, NOT a statement that the creator has no engagement. Follower count is known, so it is measurable.
- unit_note: engagement_rate and peak_post_engagement_rate are ratios (0-1); avg_interactions_per_post and best_post_interactions are absolute counts. Read status before reading any number: a null rate has several different causes and status says which one applies here.

## Content
- category: software
- subcategory: devtools
- category_confidence: 0.95
- category_source: derived_from_recent_content
- 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
- bio: Hello! I'm Leonardo and talk about Open Source, Web Development, and GitHub - I'm a Frontend Developer, GitHub Star ...

## Audience (inferred)
- status: present
- description: Frontend web developers and GitHub power users focused on modern JS/TS frameworks and AI coding assistants
- roles: dev
- seniority: practitioner
- pain_points: Configuring auth, routes and middleware in TanStack Start, Getting Copilot to reliably understand and act on large codebases, Writing and validating TypeScript types without runtime errors, Switching contexts and managing projects efficiently in VS Code
- posts_analysed: 48
- confidence: 0.75

## Commercial (inferred)
- audience_buyer_fit: 0.9
- promotion_intent: 0.8
- open_to_collaboration: false
- contact: Koinon does not publish creator contact details.

## Quality signals
- authenticity_score: 44
- authenticity_basis: profile_shape_only
- credibility_score: 44
- flagged_for_review: false
- koinon_bd_grade: C — measures Koinon partner-outreach fit, not creator quality
- interpretation: Signals for triage, not verdicts. A flag means the profile is worth a manual check.

## Evidence
- [youtube_devleonardo#fb8f17b8] Telling my custom agent to ask me questions when in doubt (https://www.youtube.com/@DevLeonardo)
- [youtube_devleonardo#ed06f481] A prompt to create skills
- [youtube_devleonardo#565c1ff5] The Best Tool for Coding Agents
- [youtube_devleonardo#cd4f491a] Switch between VS Code projects super fast
- [youtube_devleonardo#59e9b163] Install #mcp  on #vscode with a single command
- [youtube_devleonardo#36ef284d] Copilot automates Chrome through MCP #copilot #mcp #chromedevtools
- [youtube_devleonardo#74141b47] MCP Tools Explained in 58 Seconds on GitHub Copilot
- [youtube_devleonardo#b0f38e20] Show/Hide components for logged in users

## Provenance
Every inferred field below carries how it was produced. Facts stay facts; inferences stay inferences.

- audience.description: source_type=ai_inferred, confidence=0.75, freshness_days=79, method=llm_persona_from_recent_content
- audience.roles: source_type=ai_inferred, confidence=0.75, freshness_days=79, method=llm_persona_from_recent_content
- audience.seniority: source_type=ai_inferred, confidence=0.75, freshness_days=79, method=llm_persona_from_recent_content
- commercial.audience_buyer_fit: source_type=ai_inferred, confidence=0.6, freshness_days=79, method=llm_scorer — Relative signal within Koinon indexing, not a market-wide score.
- commercial.promotion_intent: source_type=ai_inferred, confidence=0.6, freshness_days=79, method=llm_scorer
- quality.anomaly_flags: source_type=heuristic, confidence=0.5, freshness_days=90, method=profile_snapshot_and_engagement_ratio_heuristic — Means "worth a manual check", NOT confirmed fraud. Flags can be wrong and are not a verdict about the person.
- quality.authenticity_score: source_type=heuristic, confidence=0.25, freshness_days=79, method=Profile-shape heuristic from a single snapshot (follower count, following ratio, account age, posting volume, verification), reduced for engagement red flags where post engagement was collected. Where only a follower count is available the score saturates at 58. — The input set differs by platform; do not compare this score across platforms.
- quality.koinon_bd_grade: source_type=ai_inferred, confidence=0.5, freshness_days=90, method=llm_partner_fit_classifier + fit_score >= 0.6 AND authenticity >= 60 => A; fit_score >= 0.4 AND authenticity >= 45 => B; else C. authenticity < 30 or a promotional-pattern flag => quarantine. — Koinon partner-outreach fit, not creator quality.
- reach.followers: source_type=observed, confidence=0.95, freshness_days=90, method=platform_profile

## Freshness
- profile_checked_days_ago: 90
- content_analysed_days_ago: 79
- audience_updated_days_ago: 79

## AI retrieval
- indexing_requests: 10
- user_triggered_requests: 0
- note: Being indexed in bulk is not the same as being retrieved to answer a question.

## This profile
- Claim or correct: https://koinonlink.com/claim?k=youtube_devleonardo
- Request removal: https://koinonlink.com/claim?k=youtube_devleonardo
- Terms: https://koinonlink.com/for-ai