ISON-format / ison
🔥 Token-efficient JSON alternative for LLMs & agentic AI — same data, fewer tokens. Python · JS/TS · Rust · Go · C++
Why this job: works in the areas we cover, but does not say which job it does
What it does
Every time you send data to a language model, you pay by the token. JSON spends a remarkable share of those tokens on syntax that carries no information — the same key repeated on every record, braces, colons, quotation marks.
Get started
No single install command. Read the steps in the README (opens in new tab)
- Maintenance
- Active
- Last commit 2 months ago
- Stars
- 127
- On GitHub
- Licence
- MIT
- Allows business use
- Downloads for
- None listed
- No release files
- Latest version
- v1.1.1
- Released 3 months ago
- Built with
- Python
- 47% of the code
Is it looked after?
- Contributors
- 1
- Last 90 days
- Issues
- 100% closed
- 0 still open
- Pull requests
- 0 merged
- 0 waiting
- Releases
- 4
- 4 in the last year
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More: languages, topics, project record and preview image
Languages
- Python 47%
- Rust 10%
- TypeScript 10%
- JavaScript 9%
Topics
- agentic-ai
- agentic-ai-development
- ai-data-format
- context-engineering
- data-format
- data-interchange
- json
- llm
- llm-workflow
- serialization
- token-efficiency
Project record
- JobOther AI tools
- StatusListed
- Commits78
- Forks9
- Watching4
- Stars in 28 days0
- CreatedDec 19, 2025
- First seen by usNov 7, 2026
- CheckedNov 7, 2026