# Certificate register

Browse credentials by year and select one to view the official record and verification options.

Official course records available for consultation, with source verification and archived certificates.

## Provenance and limits

Certificates document completion of the listed courses. They do not, on their own, establish professional experience, technology mastery, or current language fluency.

## 2026

### LangChain- Agentic AI Engineering with LangChain & LangGraph

- Issued by Udemy
- Holder: Leone Crespo Daher de Souza
- Completed: 2026-10-07
- Technologies: LangChain · LangGraph · RAG · MCP · AI · Python
- Recorded verification: 2026-10-07 (verified)

[Verify credential](https://www.udemy.com/certificate/UC-46b08eb2-381d-4fd1-a961-d6850f1680ba/) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/udemy-langchain-agentic-ai-engineering.jpg)

### AI Fluency: AI Capabilities & Limitations

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-17
- Technologies: AI
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/5fx3uazp9qpf) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-ai-capabilities-and-limitations.jpg)

### AI Fluency: Framework & Foundations

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-17
- Technologies: AI
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/kezahcopgjcy) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-ai-fluency-framework-and-foundations.jpg)

### Model Context Protocol: Advanced Topics

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-17
- Technologies: MCP · AI
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/s8rd6t4thg8p) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-model-context-protocol-advanced-topics.jpg)

### Introduction to agent skills

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-14
- Technologies: AI · Agents
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/bveedbetxnv7) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-introduction-to-agent-skills.jpg)

### Introduction to subagents

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-14
- Technologies: AI · Agents
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/26g2xmzeywkg) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-introduction-to-subagents.jpg)

### Introduction to Model Context Protocol

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-13
- Technologies: MCP · AI
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/d2xnzgugngpc) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-introduction-to-model-context-protocol.jpg)

### Claude 101

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-10
- Technologies: AI
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/9zf6f7vtsx9j) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-claude-101.jpg)

### Claude Code 101

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-10
- Technologies: AI · Agents · Claude Code
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/tb2qahncsuan) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-claude-code-101.jpg)

### Claude Code in Action

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-10
- Technologies: AI · Agents · Claude Code
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/vm5rupmsy2pq) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-claude-code-in-action.jpg)

### Claude Platform 101

- Issued by Anthropic Education
- Holder: Leone Souza
- Completed: 2026-07-10
- Technologies: AI
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://verify.skilljar.com/c/qsjkyuvascj5) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/anthropic-claude-platform-101.jpg)

## 2024

### Build ASP.NET Core Web API - Scratch To Finish (.NET8 API)

- Issued by Udemy
- Holder: Leone Crespo Daher de Souza
- Completed: 2024-04-18
- Technologies: C# / .NET · REST APIs
- Recorded verification: 2026-07-22 (verified)

[Verify credential](https://www.udemy.com/certificate/UC-736004e1-63bd-4360-a1ed-9ee75a55bbad/) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/udemy-build-asp-net-core-web-api-scratch-to-finish-net8-api.jpg)

## 2021

### The Complete 2021 Flutter Development Bootcamp with Dart

- Issued by Udemy
- Holder: Leone Crespo Daher de Souza
- Completed: 2021-08-16
- Technologies: Flutter · Dart
- Recorded verification: 2026-07-20 (verified)

[Verify credential](https://www.udemy.com/certificate/UC-2ac4d6a7-6027-434f-a726-61c068daabc2/) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/udemy-complete-flutter-development-bootcamp-with-dart.jpg)

## 2015

### Laboratório de Conversação e Leitura acadêmica em inglês através de textos literários. - Intermediário, nível B2

- Issued by Universidade Federal do Rio de Janeiro
- Holder: LEONE CRESPO DAHER DE SOUZA
- Completed: 2015-02-28
- Technologies: English
- Recorded verification: 2026-09-14 (verified)

[Verify credential](https://isfaluno.mec.gov.br/validador) · [Official certificate image](https://leonedaher.com/assets/certificates/originals/ufrj-idiomas-sem-fronteiras-ingles-2015.jpg)

## Public sources

[Public certificate catalog](https://leonedaher.com/assets/certificates/catalog.json)

[Portfolio page](https://leonedaher.com/certificacoes/)