Hermetica Labs
Hermetica Labs'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 @HermeticaLabs 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 caelis-engine corpus
HermeticaLabs/caelis-engine: Caelis Engine, Deterministic astronomical computation engine for JavaScript. VSOP87B + ELP/MPP02-LLR. No server. No API key. No…
- Look up how caelis-engine implements astronomical-algorithms, astronomy, browser, with answers cited to file and line.
- Answer from caelis-engine's real source instead of memory (Web and frontend platform).
- How does caelis-engine implement astronomical-algorithms?
Search the GitHub repository HermeticaLabs/caelis-engine with XERJ (https://hub.xerj.org/corpus/hermeticalabs--caelis-engine). 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/HermeticaLabs/caelis-engine caelis-engine && git -C caelis-engine checkout 6876502d90f70b7ad5359c53abe3145924c22e8e 3. Start a local node and leave it running: xerj --insecure --data-dir ./xerj-data 4. xerj autoindex ./caelis-engine --url http://127.0.0.1:9200 --prefix caelis-engine --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: AGPL-3.0. Read it for the approach only, do not copy code.
corpus hermeticalabs--caelis-engine · Web and frontend platform
Related corpora: jose-js, whatwg-webidl, HermeticaLabs/Caeliscope, asemqaffaf/rust-fetch
Case study: reference coding for agents
Selected work
HermeticaLabs/caelis-engine
The corpus is the whole repository at the pinned commit, not only the files of the selected commit.
HermeticaLabs/Caeliscope
The corpus is the whole repository at the pinned commit, not only the files of the selected commit.
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/HermeticaLabs)
Included with the author's permission (email, 2026-11-05), under each repository's own licence, with attribution. Own more repositories? Sign in with GitHub and add them. Want something removed? Reply to the email, withdraw it on /add, or open an issue on xerj-org/xerj.