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rioyu123/README.md

Hey, I'm Rio 👋

Building for an agent-first world.

With a decade of hands-on engineering across global enterprise platforms and AI infrastructure, I focus on building AI agents and the systems that make them actually work.


What I'm Focused On

  • AI Agents: Making intelligent systems reliable, autonomous, and useful in practice.
  • Developer Infrastructure: Building solid foundations, runtimes, and developer tooling for AI.
  • Open Source: Contributing back to the frameworks and libraries powering this ecosystem.
  • Fintech & Value Rails: Exploring the underlying infrastructure that moves and settles value.

Selected Open-Source Work

26 merged pull requests across other open-source projects, plus a Cloudflare fix merged through a maintainer's PR. Project stars and merge status updated on September 26, 2026; sorted by project stars, highest first.

Merged

No. Project ⭐ Stars PR Technical Contribution & Impact
1 OpenAI Agents SDK 29,697 #4995 Fixed a hang when the application closes a transcription session during setup, signaling completion after cleanup so transcript consumers can finish, without changing the public API or normal transcript delivery.
2 OpenAI Agents SDK 29,697 #4982 Included shell and apply_patch calls in session tool-usage statistics, with support for existing records and no database migration or double-counting of outputs.
3 OpenAI Agents SDK 29,697 #4909 Made the encrypted-session quick start work with its documented installation, with explicit session cleanup and PostgreSQL dependencies.
4 OpenAI Agents SDK 29,697 #4822 Prevented phantom turn-0 usage records on empty session branches, keeping usage totals aligned with actual conversation turns.
5 OpenAI Agents SDK 29,697 #4743 Clarified async database driver and authentication dependencies for SQLAlchemy sessions, helping users avoid missing-driver setup failures.
6 OpenAI Agents SDK 29,697 #4739 Preserved Pydantic Field constraints on *args and **kwargs, so declared numeric and string bounds are enforced in the generated JSON schema and at runtime.
7 Microsoft Agent Lightning 18,471 #583 Added a clear native-Windows boundary for the local runner by failing fast before worker startup, keeping package imports and controller modes clean.
8 Microsoft Agent Lightning 18,471 #573 Prevented request drops when model providers return missing or malformed token IDs, preserving retry deduplication and VERL image alignment.
9 NVIDIA SkillSpector 18,292 #467 Made recursive scans pipeable by sending combined JSON to stdout when no output file is given, with status and warnings on stderr, so a failed child scan still yields one parseable document.
10 NVIDIA SkillSpector 18,292 #463 Enabled model-registry overrides for Claude, Codex, and Gemini CLI providers, preserving valid budgets and handling malformed entries without crashing.
11 Burn 15,984 #5494 Ensured extensionless Burnpack paths survive atomic saves, overwrite protection, and store round-trips without silently falling back to .bpk files.
12 Cloudflare Agents 5,658 #2326 Fixed method-override detection after Agent wraps methods, removing false skills warnings and restoring missing-classifier warnings. Authored the fix; a maintainer rebased and merged it.
13 Apple Core ML Tools 5,431 #2849 Rejected inverted RangeDim bounds at construction time when the upper bound is positive, catching invalid input-shape definitions early while preserving valid and unbounded ranges.
14 fsspec 1,355 #2127 Fixed DirFileSystem detailed listings so glob/find return relative names that read back through the same wrapper, across sync and async paths without changing wrapped-filesystem metadata.
15 Anthropic Buffa 895 #414 Added fallible generated-to-dynamic message conversion with structured errors, making missing types and decode failures easier to handle without breaking existing APIs.
16 Anthropic Buffa 895 #442 Added explicit string copying so custom string types can keep borrowing conversions while supplying owned storage for Protobuf messages and generated views.
17 Google MCP Security 529 #287 Enabled end-to-end SecOps workflows by exposing alert IDs and triage verdicts without altering the existing response shape.
18 NVIDIA SkillEvaluator 514 #129 Turned malformed or unreadable policy files into clear, path-specific CLI errors, helping users find configuration problems without silently falling back to defaults.
19 NVIDIA SkillEvaluator 514 #109 Expanded link validation across CommonMark references, HTML anchors, and images while filtering out comment/code false positives.
20 NVIDIA SkillEvaluator 514 #106 Made Gitleaks checks deterministic and fail-safe on shallow histories while keeping repo-wide scheduled audits intact.
21 NVIDIA SkillEvaluator 514 #84 Fixed false agent-runtime failures caused by health checks matching raw transcript text, improving diagnostic accuracy.
22 NVIDIA SkillEvaluator 514 #107 Fixed a dependency blind spot where PEP 508 markers could hide unpinned packages, without changing direct-reference behavior.
23 Tesla Fixed Containers 464 #228 Fixed a compilation error in OptionalReference::emplace() caused by parameter/accessor shadowing, using std::addressof to handle overloaded address-of operators, with tests for binding and rebinding.
24 Tesla Fixed Containers 464 #227 Made empty-range insertion return the original position in FixedList, matching standard container semantics and keeping callers' insertion cursors in place.
25 Microsoft RAMPART 415 #179 Prevented reports with duplicate timestamps from overwriting one another through exclusive file creation and collision-safe filenames.
26 Technocore 160 #135 Fixed a side-effect issue where HEAD requests could append messages or burn nonces, keeping read-only routes strictly read-only.
27 Technocore 160 #126 Prevented HTTP 500s when the idle reaper removes room or note files during reads, while preserving sequence tracking and surfacing permission errors.

Tech & Craft

Python Go Rust TypeScript

Tools change, but the interesting part is always making different, moving pieces fit together seamlessly.

Browse all of my pull requests.

Pinned Loading

  1. claude-agent-sdk-python claude-agent-sdk-python Public

    Forked from anthropics/claude-agent-sdk-python

    Python

  2. openai-agents-python openai-agents-python Public

    Forked from openai/openai-agents-python

    A lightweight, powerful framework for multi-agent workflows

    Python

  3. SkillEvaluator SkillEvaluator Public

    Forked from NVIDIA/SkillEvaluator

    Multi-tier framework for evaluating AI agent skills with quality gates, semantic overlap detection, synthetic evaluation dataset generation, and live agent evaluation that measures how skills affec…

    Python

  4. burn burn Public

    Forked from tracel-ai/burn

    Burn is a next generation tensor library and Deep Learning Framework that doesn't compromise on flexibility, efficiency and portability.

    Rust

  5. Huabu Huabu Public

    Forked from microsoft/Huabu

    Huabu, where you and your agents think together.

    TypeScript

  6. RAMPART RAMPART Public

    Forked from microsoft/RAMPART

    A pytest-native safety and security testing framework for agentic AI applications

    Python