llm-output-guard

Lightweight, vendor-agnostic library for detecting system prompt leaks and gating unauthorized action markers in LLM output

A new way for AI to search for data
View on GitHub
1GitHub stars

Python

What XERJ indexed

Snapshot

Whole repository

The whole repository at commit 63dcb657a7 (2026-10-23).

Selected work

duki
@duki-core

“Add StreamGuard: chunk-safe marker filtering for streamed output”. 5 files, 412 lines in tests, llm_output_guard, examples.

Licence

The repository

MIT

Checked by a person at the pinned commit.

The XERJ corpus

MIT, with credit

The author agreed by email on 2026-10-23. Same terms as the repository. Answers name the repo, the commit and the file:line.

in licence reviewnot in the hub yetsuggested use: adapt with attribution

ai-safetyllm-securitypythonsecurity

Example questions

The prompt

Paste it into your AI agent. It clones duki-core/llm-output-guard at the pinned commit and indexes it on your machine.

Search the GitHub repository duki-core/llm-output-guard with XERJ (https://hub.xerj.org/corpus/duki-core--llm-output-guard).
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/duki-core/llm-output-guard llm-output-guard && git -C llm-output-guard checkout 63dcb657a71d7ca8b86fbcb17a4469b111153428
3. Start a local node and leave it running: xerj --insecure --data-dir ./xerj-data
4. xerj autoindex ./llm-output-guard --url http://127.0.0.1:9200 --prefix llm-output-guard --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: MIT. Keep the copyright notice and credit the authors.

Related

Selected work and consent: the XERJ registry.