Fedor Kuyanov
Fedor Kuyanov'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.
Totals across every corpus @kuyanov 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 lemmatheca corpus
kuyanov/lemmatheca: A growing library of mathematics
- Reuse a worked example: the commit “New entries” (139 files · JSON, HTML).
- Answer from lemmatheca's real JSON source instead of memory (API design and specification).
- Where does lemmatheca handle “New entries”?
- What does formal do in lemmatheca?
Search the GitHub repository kuyanov/lemmatheca with XERJ (https://hub.xerj.org/corpus/kuyanov--lemmatheca). 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/kuyanov/lemmatheca lemmatheca && git -C lemmatheca checkout 49ed766dc66dd8d15c3b40e999069e14ddeee2b1 3. Start a local node and leave it running: xerj --insecure --data-dir ./xerj-data 4. xerj autoindex ./lemmatheca --url http://127.0.0.1:9200 --prefix lemmatheca --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: Apache-2.0. Keep the copyright notice and credit the authors.
corpus kuyanov--lemmatheca · API design and specification
Related corpora: mdn-browser-compat-data, caniuse, bkuzmanoski/vscode-theme-meridian, mef-dev/bpmn-examples
Search an OpenAPI spec from an agent · Case study: reference coding for agents
Selected work
kuyanov/lemmatheca
The corpus is the whole repository at the pinned commit, not only the files of the selected commit.
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.
Sign in with GitHub or Hugging Face to see more: every selected commit in full (commit date, every folder, licence review state, pin) and the pack builds of each corpus.
[](https://hub.xerj.org/contributors/kuyanov)
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.