devtools
Free open-source developer tools that run entirely in your browser: nothing you paste is ever uploaded. JSON formatter and validator, diff checker, base64 encoder/decoder, word counter and text statistics, list sorter and duplicate remover. A private, offline-capable alternative to online dev tool sites
What XERJ indexed
Snapshot
The whole repository at commit 408ad922f3 (2026-09-28). main is 27 commits ahead.
Selected work
“Diff: two-stage line/word engine, ignore toggles, copy as patch”. 14 files, 1,032 lines in src/tools, the project root.
Licence
The repository
LICENSE file checked at the pinned commit; the author agreed to inclusion.
The XERJ corpus
The author agreed by email on 2026-10-27. Same terms as the repository. Answers name the repo, the commit and the file:line.
selected for the XERJ Corpus Hublicence clearedsuggested use: adapt with attribution
base64base64-decoderbase64-encodercharacter-counterclient-sidecloudflare-workersdeveloper-toolsdevtools
Example questions
- How does devtools implement base64?
- Where does devtools handle “Diff: two-stage line/word engine, ignore toggles, copy as patch”?
- What does src/tools do in devtools?
Inside the indexed corpus
- Languages by size: TypeScript 99.2%, HTML 0.4%, CSS 0.4%.
- On GitHub since 2026-09-24, last push 2026-10-29, 57 commits on main.
- The pin is 27 commits behind main; the corpus answers from the pinned code, not the newest.
Licence on GitHub and in the corpus
GitHub reported MIT for fadeltd/devtools on 2026-10-29, and the LICENSE file at commit 408ad922f3 was reviewed as MIT. They match, so answers from this corpus carry the same terms as the live repository.
Contributors
Fadel Trivandi Dipantara (@fadeltd) has 1 selected repository on the hub.
Using XERJ with devtools
- Best grep alternative for AI coding agents (2026)
- Ask questions about a GitHub repo without cloning it
- Index a reference library for a coding agent
- ripgrep vs a code index for coding agents: 30 tasks
The prompt
Paste it into your AI agent. It clones fadeltd/devtools at the pinned commit and indexes it on your machine.
Search the GitHub repository fadeltd/devtools with XERJ (https://hub.xerj.org/corpus/fadeltd--devtools). 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/fadeltd/devtools devtools && git -C devtools checkout 408ad922f38623a876f256a7028e0ce5b32514d3 3. Start a local node and leave it running: xerj --insecure --data-dir ./xerj-data 4. xerj autoindex ./devtools --url http://127.0.0.1:9200 --prefix devtools --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
Fadel Trivandi DipantaraWeb and frontend platform corporafaahjose-jsvanguard-context-burnString-Utility-Belt/string-utility-beltcodercops/toolbeltburakdede/lorepack
Stats: GitHub API, fetched 2026-10-29. Selected work and consent: the XERJ registry.