Ymsniper

Corpus Hub contributor since 2026-10-19

Ymsniper's work was selected for the XERJ Corpus Hub, the open reference memory AI coding agents search before they write code. When an agent meets the same problem, it gets this implementation back as a worked example, with the author and the repository attached.

2corpora

1selected commit

7files

849lines

★ 19GitHub stars on repo

Totals across every corpus @Ymsniper appears in; a commit selected for two corpora counts once. Files and lines count the selected commits; each corpus indexes the whole repository at its pinned commit.

What an agent can do with the umbra corpus

Ymsniper/umbra: External read-only game overlay for Linux. Derived offsets, composed skeletons, optional kernel module for ptrace-independent memory reads…

Look up how umbra implements cpp, kernel-module, linux, with answers cited to file and line.
Reuse a worked example: the commit “Run the game's own instructions to reach the object array, and bump t…” (7 files · C++).
Answer from umbra's real C++ source instead of memory (API design and specification).

Example questions

How does umbra implement cpp?
What does src do in umbra?

Paste it into your AI agent. It clones the repo at the pinned commit and indexes it on your machine.

Search the GitHub repository Ymsniper/umbra with XERJ (https://hub.xerj.org/corpus/ymsniper--umbra).
Run these in a shell, in order, and check each result before the next:
1. xerj --help  (success: it prints usage). If xerj is missing: curl -fsSL https://xerj.org/get | sh
2. git clone https://github.com/Ymsniper/umbra umbra && git -C umbra checkout 837e280d2bb153c3a2e2a6b238a3738677a5cd5a
3. Start a local node and leave it running: xerj --insecure --data-dir ./xerj-data
4. xerj autoindex ./umbra --url http://127.0.0.1:9200 --prefix umbra --progress plain
5. xerj autoindex map --url http://127.0.0.1:9200
Then answer my question from the indexed files and cite the ax_path of every hit. Query syntax: https://xerj.org/llms.txt
Licence: GPL-2.0. Read it for the approach only, do not copy code.

corpus ymsniper--umbra · API design and specification
Related corpora: cereal, datasketches-cpp, Quchaosheng/embodied-agent-runtime, jmuehlig/perf-cpp
Search an OpenAPI spec from an agent · Case study: reference coding for agents

Selected work

GitHub ★ 19

Ymsniper/umbra

837e280d2b Run the game's own instructions to reach the object array, and bump t…

selected commit: 7 files · 849 lines · C++ · src, the project root

The corpus is the whole repository at the pinned commit, not only the files of the selected commit.

selected · in licence reviewcorpus ymsniper--umbraAPIGPL-2.0cppkernel-modulelinuxoverlayreverse-engineeringx11 agreed 2026-10-19

Not installable yet: this corpus is not in the hub registry until its licence review passes, so xerj corpus add and xerj ask cannot fetch it. It becomes installable when this card says live in the hub.

Their repositories are also pinned in: exploit-pocs-2025.

[![XERJ Corpus Hub contributor](https://hub.xerj.org/contributors/Ymsniper/badge.svg)](https://hub.xerj.org/contributors/Ymsniper)

Included with the author's permission (email, 2026-10-19), under each repository's own licence, with attribution. Want it removed? Reply to the email or open an issue on xerj-org/xerj.