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just coding things
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just coding things
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  • San Diego

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Achievement: Pull Sharkx2Achievement: Public SponsorAchievement: Quickdraw

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diego-coder/README.md

Diego Coder

Machine Learning Engineer • AI Infrastructure • Contributor

FOSS and Sauce

Active contributor to leading agentic AI frameworks — LangChain, LangGraph, and CrewAI. I focus on production reliability, lifecycle stability, schema validation, and traceable tool invocation in agent ecosystems.

My work addresses:

  • Tool call parsing and structured output validation
  • Pydantic v2 compatibility and schema hygiene
  • Agent lifecycle stability in non-interactive and CI/CD environments
  • Time-travel checkpointing and reproducibility
  • Downstream embedding bugs and dependency validation

These efforts often involve complex code paths, legacy compatibility, and community-visible design tradeoffs. I target high-friction issues, write minimal reproducible tests, and coordinate with other contributors to land meaningful changes on actively evolving codebases.

My contributions across LangChain repos

Appendix: Highlighted Work

LangChain Ecosystem Contributions

Repo PR Title Status Link
langchain-ai/langchain Fix single-quoted JSON tool calls ✅ Merged #32109
langchain-ai/langchain Structured output fix for Pydantic v2 🟡 Open #32255
langchain-ai/langchain-community RequestsGetTool validation error 🟡 Open #211
langchain-ai/langchain-community InstructorEmbedding dependency error 🟡 Open #209
langchain-ai/langchain-community SQLDatabaseTool response_format support 🟡 Open #215
langchain-ai/langgraph Checkpoint ID on time travel 🟡 Open #5591
langchain-ai/langgraph Remove deprecated dynamic versioning 🟡 Open #5599
langchain-ai/langgraph Concrete validation types for StateLike ❌ Closed #5596
crewAIInc/crewAI-tools Fix agent crash in non-interactive shell 🟡 Open #390
crewAIInc/crewAI Prevent Pydantic coercion of state model 🟡 Open #3218

Notable Issue Triage & Resolution

Repo Issue Contribution Status
langchain-ai/langchain #31335 Diagnosed an upstream bug in the model's chat template as the root cause. My analysis led to the issue's closure. ✅ Closed
langchain-ai/langgraph #5165 Provided a minimal reproducible example (MRE) which confirmed the bug and helped lead to its closure. ✅ Closed
langchain-ai/langgraph #2538 Provided an MRE that confirmed the bug report, leading to its closure. ✅ Closed

Current Focus

  • Agentic architectures: LangGraph, CrewAI
  • RAG pipelines and reranking logic
  • Schema-first LLM integration and validation
  • Reproducibility, observability, and automated testing

Contact

Popular repositories Loading

  1. langchain langchain Public

    Forked from langchain-ai/langchain

    🦜🔗 Build context-aware reasoning applications

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  2. langgraph langgraph Public

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    Build resilient language agents as graphs.

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  3. langchain-community langchain-community Public

    Forked from langchain-ai/langchain-community

    Community-maintained LangChain integrations

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  4. crewAI crewAI Public

    Forked from crewAIInc/crewAI

    Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewAI empowers agents to work together seamlessly, tackling complex tasks.

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  5. crewAI-tools crewAI-tools Public

    Forked from crewAIInc/crewAI-tools

    Extend the capabilities of your CrewAI agents with Tools

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  6. diego-coder diego-coder Public