SLIMPROTOCOL
Reduce token costs by 40-50%

Your LLM applications deserve better efficiency

SLIM is a token-efficient data serialization protocol built for AI. Ship more data in fewer tokens while preserving complete data integrity.

Get StartedView on GitHub
Zero dependencies
TypeScript native
MIT licensed

Think fast. Build faster.

See the difference in action

JSON

56 tokens
[
  {
    "id": 1,
    "name": "Alice"
  },
  {
    "id": 2,
    "name": "Robert"
  }
]

SLIM

33 tokens (-41%)
|2|id#,name$|
1,Alice
2,Robert

Everything you need for efficient AI apps

Built for modern AI applications with developer experience at the core

Token Efficiency

Reduce LLM token usage by 40-50% compared to JSON while preserving all data integrity.

Zero Dependencies

Lightweight core library with no runtime dependencies. Only 3KB gzipped.

TypeScript Native

Built with TypeScript for excellent IDE support and type safety out of the box.

Streaming API

Process large datasets efficiently with built-in streaming and chunked encoding support.

Data Validation

Built-in schema inference and validation to ensure data consistency and reliability.

Universal Format

Supports all JavaScript types including nested objects, arrays, numbers, strings, and more.

Proven performance. Real savings.

Benchmarked against real-world data patterns

49%
Average Token Savings
96%
Test Coverage
3KB
Bundle Size (gzipped)

Token Savings vs JSON

Data TypeJSON TokensSLIM TokensSavings
User table (100 rows)205390356%
Nested config715818%
GPS track (50 points)3002739%

Built for AI. Optimized for you.

SLIM Protocol shines in AI/LLM applications where token efficiency matters

LLM Context Windows

40-60%

Maximize your context window by sending more data in fewer tokens. Perfect for GPT-4, Claude, and other LLMs.

AI Chatbots

30-50%

Reduce conversation history size while maintaining full context. Lower costs per interaction.

Vector Databases

35-55%

Store metadata more efficiently in vector databases. Reduce storage costs and improve retrieval speed.

API Responses

25-45%

Optimize API payloads for AI applications. Faster transfers and lower bandwidth costs.

Start building in minutes

Install SLIM Protocol and start reducing your token costs today. Zero configuration required.

Get StartedView Documentation
Quick Install
npm install slim-protocol-core