Ernesto Crespo.

Seraph13

Ernesto Crespo

Summary

  • •Electrical Engineer.
  • •Python Developer.
  • •AI Engineer.
  • •Data analyst.
  • •Data Engineer.
  • •AWS Cloud Engineer.
  • •Data Scientist.

Ernesto Crespo

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Portfolio

Notebooks

Repositories

55 repositories with commits in 2026 (1,573 hand-written commits), plus 10 earlier LangChain, LangGraph and data-science projects. Figures as of Oct 25, 2026; see the full picture.

Agentic AI & LLM apps · 14

prismal-ai/prismal

Prism-inspired multi-agent orchestration framework built on LangGraph: security-first, provider-agnostic and composable.

  • 504 commits in 2026
  • Last commit Oct 22, 2026

umbral

Local-first agentic terminal written in Go, with MCP tools and Anthropic / OpenAI providers.

  • 223 commits in 2026
  • Last commit Oct 24, 2026

prismal-ai/prismal-server

REST, WebSocket and SSE API server for the Prismal framework.

  • 22 commits in 2026
  • Last commit Oct 12, 2026

chatbot

Reflex chatbot built on reflex-assistant-ui that talks to any OpenAI-compatible server (OpenAI, Ollama and others).

  • 8 commits in 2026
  • Last commit Oct 24, 2026

prismal-ai/prismal-sdk

Python client for prismal-server over REST, WebSocket and SSE.

  • 7 commits in 2026
  • Last commit Jul 20, 2026

onlyVans

Data-analysis assistant: a LangGraph agent over PostgreSQL with a Reflex chat interface.

  • 5 commits in 2026
  • Last commit Jan 30, 2026

skills

Seven Agent Skills for software-engineering workflows: architecture evaluation, scaffolding, reviews and more.

  • 5 commits in 2026
  • Last commit Sep 6, 2026

recruitment_agency

LangGraph application that screens candidates against a job profile, with a Reflex web UI.

  • 4 commits in 2026
  • Last commit Feb 1, 2026

prismal-ai/prisma-notebooks

Jupyter notebooks with worked examples of the Prismal framework.

  • 3 commits in 2026
  • Last commit Jul 13, 2026

demo_mcp_agent

LangGraph agent demo that calls MCP tools, with a FastAPI backend and a Reflex UI.

  • 2 commits in 2026
  • Last commit Feb 1, 2026

prismal-ai/prismal-chatbot

Connectors that put Prismal agents behind external chat bots.

  • 2 commits in 2026
  • Last commit Jul 19, 2026

prismal-ai/prismal-dashboard

Admin web dashboard for Prismal.

  • 2 commits in 2026
  • Last commit Jul 19, 2026

prismal-ai/prismal-tui

Terminal user interface for Prismal.

  • 2 commits in 2026
  • Last commit Jul 19, 2026

prismal-ai/prismal-webchat

Web chat front end for Prismal agents.

  • 2 commits in 2026
  • Last commit Jul 19, 2026

LangChain & LangGraph labs · 5

Langgraph_tutorials

Hands-on LangGraph notebooks with Claude: typed state, checkpoints, branching, multi-agent supervisors, agentic RAG, computer-use agents and human-in-the-loop.

  • 9 commits in 2026
  • Last commit May 24, 2026

langchain_tutorials

61 progressive LangChain exercises: prompts, tools, structured output, memory and full workflows.

  • 8 commits in 2026
  • Last commit Apr 3, 2026

crewai_ollama_langchain

CrewAI agents running on local Ollama models through LangChain.

  • 4 commits · active 2024
  • Last commit Mar 31, 2024

fastapi_ollama_langchain

FastAPI service that serves an Ollama LLM through LangChain, with Redis caching.

  • 4 commits · active 2024
  • Last commit Mar 17, 2024

streamlit_whisper_gpt

Streamlit app that transcribes audio with Whisper and processes the text with GPT.

  • 1 commit · active 2022
  • Last commit Dec 12, 2022

Reflex custom components · 34

reflex-mapcn

mapcn maps for Reflex: ready-made, themeable map components.

  • 42 commits in 2026
  • Last commit Oct 24, 2026

reflex-rosencharts

Port of rosencharts (D3 + Tailwind) to Reflex: 43 charts in pure Python.

  • 29 commits in 2026
  • Last commit Oct 25, 2026

reflex-silverpoint-react

Silverpoint charts for Reflex: charts drawn in the manner of a Renaissance silverpoint drawing.

  • 25 commits in 2026
  • Last commit Oct 25, 2026

reflex-perspective

FINOS Perspective for Reflex: streaming data grids and pivot charts for large datasets.

  • 19 commits in 2026
  • Last commit Oct 24, 2026

reflex-react-player

react-player v3 for Reflex: YouTube, Vimeo, HLS, DASH, Mux, Spotify, Twitch and more.

  • 18 commits in 2026
  • Last commit Oct 25, 2026

reflex-react-flow

React Flow v12 for Reflex: node-based editors and flow diagrams in pure Python.

  • 15 commits in 2026
  • Last commit Oct 25, 2026

reflex-threejs

three.js for Reflex through React Three Fiber and drei: 3D scenes in pure Python.

  • 15 commits in 2026
  • Last commit Oct 25, 2026

reflex-hairline

Hairline for Reflex: six isometric line figures that react to the pointer.

  • 12 commits in 2026
  • Last commit Oct 24, 2026

reflex-plasma-ui

Plasma UI for Reflex: liquid-glass panels.

  • 12 commits in 2026
  • Last commit Oct 25, 2026

reflex-charts

Chart.js for Reflex, wrapping react-chartjs-2.

  • 11 commits in 2026
  • Last commit Oct 24, 2026

reflex-icd11ect

WHO ICD-11 Embedded Classification Tool for Reflex: diagnosis search and coding.

  • 11 commits in 2026
  • Last commit Oct 24, 2026

reflex-reactbits

React Bits for Reflex: animated, interactive UI components and backgrounds.

  • 11 commits in 2026
  • Last commit Oct 25, 2026

reflex-knightlab-timeline

Knight Lab TimelineJS for Reflex: interactive storytelling timelines.

  • 10 commits in 2026
  • Last commit Oct 24, 2026

reflex-mapgl-maplibre

MapLibre GL JS maps for Reflex through react-map-gl: markers, popups, GeoJSON layers, clustering and heatmaps.

  • 10 commits in 2026
  • Last commit Oct 24, 2026

reflex-mermaidjs

Mermaid for Reflex: flowcharts, sequence diagrams and more from Markdown-like text.

  • 10 commits in 2026
  • Last commit Oct 24, 2026

reflex-nivo

nivo for Reflex: a rich set of D3-based data-visualization components.

  • 10 commits in 2026
  • Last commit Oct 24, 2026

reflex-pragmatic-drag-and-drop

Atlassian Pragmatic drag and drop for Reflex: sortable lists and Kanban boards.

  • 10 commits in 2026
  • Last commit Oct 25, 2026

reflex-map3d

3D city maps for Reflex, built with React Three Fiber.

  • 9 commits in 2026
  • Last commit Oct 24, 2026

reflex-react-github-calendar

react-github-calendar v5 for Reflex: a GitHub-style contribution calendar.

  • 9 commits in 2026
  • Last commit Oct 25, 2026

reflex-monocharts

Monocharts for Reflex: 30 monochromatic charts built from rounded-corner geometry.

  • 8 commits in 2026
  • Last commit Oct 24, 2026

reflex-ohif-viewer

OHIF zero-footprint DICOM viewer for Reflex, including the oncology Lesion Tracker.

  • 8 commits in 2026
  • Last commit Oct 24, 2026

reflex-react-globe-gl

react-globe-gl for Reflex: data on an interactive 3D globe.

  • 8 commits in 2026
  • Last commit Oct 25, 2026

reflex-schedule-x

Schedule-X for Reflex: a modern event calendar, an alternative to FullCalendar.

  • 8 commits in 2026
  • Last commit Oct 25, 2026

reflex-ant-design

Ant Design (antd) React components wrapped as Reflex components.

  • 7 commits in 2026
  • Last commit Oct 24, 2026

reflex-blossom-carousel

Blossom Carousel for Reflex: a native-scroll carousel with pointer drag.

  • 7 commits in 2026
  • Last commit Oct 24, 2026

reflex-resium

Resium for Reflex: Cesium 3D globes and maps.

  • 7 commits in 2026
  • Last commit Oct 25, 2026

reflex-gravityui-graph

@gravity-ui/graph for Reflex: high-performance canvas graphs, flowcharts and node editors.

  • 6 commits in 2026
  • Last commit Oct 24, 2026

reflex-jupyter-renderer-react

Jupyter notebook renderer for Reflex: show .ipynb files with outputs in a page.

  • 6 commits in 2026
  • Last commit Oct 24, 2026

reflex-tanstack-charts

TanStack Charts for Reflex: a responsive, accessible visualization grammar.

  • 6 commits in 2026
  • Last commit Oct 25, 2026

reflex-pdfslick

PDFSlick for Reflex: view and interact with PDF documents.

  • 5 commits in 2026
  • Last commit Oct 24, 2026

reflex-react-joyride

react-joyride for Reflex: guided tours for your apps.

  • 5 commits in 2026
  • Last commit Oct 25, 2026

reflex-xtermjs

xterm.js for Reflex: a terminal for the web.

  • 5 commits in 2026
  • Last commit Oct 25, 2026

reflex-google-analytics-reactjs

Google Analytics tracking for Reflex apps, built on React.

  • 4 commits in 2026
  • Last commit Oct 24, 2026

reflex-assistant-ui

assistant-ui for Reflex: a port of the React library for AI chat interfaces.

  • 3 commits in 2026
  • Last commit Oct 24, 2026

Data visualization · 1

silverpoint

Charts for React and Angular whose visual language is historical drawing technique, with an MCP server for AI assistants.

  • 187 commits in 2026
  • Last commit Oct 21, 2026

Data science & EDAs · 7

streamlit-covid-19-vzla

Streamlit dashboard that tracked COVID-19 cases in Venezuela.

  • 28 commits · active 2020–2021
  • Last commit Apr 7, 2021

data_science_portfoliio

17 notebooks: climate change, COVID-19, US retailers, Stanford Open Policing, Netflix, Spotify, video games, a movie recommender and more.

  • 21 commits · active 2022–2023
  • Last commit Mar 20, 2023

signals_fft_streamlit

Streamlit app that explores signals and their Fast Fourier Transform.

  • 10 commits · active 2020–2021
  • Last commit Mar 7, 2021

tutorial_streamlit

Multipage Streamlit tutorial: charts, dashboards, data exploration, forms, and an LLM page.

  • 9 commits · active 2020–2023
  • Last commit Aug 13, 2023

magnetic_fields

Streamlit web app about magnetic fields, with interactive plots.

  • 5 commits · active 2020
  • Last commit Nov 1, 2020

analisisobesidad-uk

Analysis of the obesity data recorded in England up to 2014.

  • 3 commits · active 2018
  • Last commit May 11, 2018

articulos-cienciadedatos

Notebooks behind blog articles on data science, such as dollar exchange-rate quotes from Quandl.

  • 2 commits · active 2018
  • Last commit May 25, 2018

Tools & desktop · 2

vigia-eew

Cross-platform, real-time earthquake early-warning desktop agent: EMSC WebSocket push with USGS REST fallback.

  • 117 commits in 2026
  • Last commit Oct 17, 2026

omagnome

Opinionated, reversible, keyboard-first developer desktop for Ubuntu + GNOME.

  • 53 commits in 2026
  • Last commit Aug 23, 2026

Sites · 2

reflex_resume

This site: resume, portfolio, blog and GitHub dashboard, built with Reflex.

  • 16 commits in 2026 · 50 since 2025
  • Last commit Oct 18, 2026

silverpoint_web

Documentation and showcase site for Silverpoint, built with Reflex.

  • 11 commits in 2026
  • Last commit Oct 21, 2026
Built with Reflex