{"repo":"dweve-ai/hedl","free":true,"listed":false,"github":"https://github.com/dweve-ai/hedl","clone":"git clone https://github.com/dweve-ai/hedl.git","description":"Token-efficient data serialization for LLM/AI. 50% fewer tokens than JSON, 93% better value/token. Rust, schema validation, LSP.","language":"Rust","stars":78,"topics":["ai-ml","cli","csv","data-format","json-alternative","language-server","llm","lsp","mcp","neo4j"],"license":"Apache-2.0","category":"dev-tools","readme_excerpt":"HEDL The Token-Efficient Data Format for LLM Applications Half the tokens. Same comprehension. Drop-in JSON replacement. Quickstart • Why HEDL • Benchmarks • Docs • Ecosystem --- The Problem You're building AI applications and sending structured data to LLMs. Like everyone else, you're probably using JSON. But have you actually looked at what you're paying for? See those \"id\": , \"name\": , \"email\": , \"role\": strings? They show up five times. That's not your data. That's overhead. Pure waste. At Claude's pricing ($3/million tokens), a 10,000-user dataset costs $15 just in repeated key names . Every single API call. The more records you have, the more you pay to say the same words over and over. --- The Solution What if you could declare your structure once and then just send the data? Same data. 56% fewer tokens. The schema declaration ( %S: ) lets you define your structure once, then send only the values. No repeated keys, no brackets, no quotes around simple strings. This is HEDL: H ierarchical E ntity D ata L anguage. A data format designed from the ground up for the economics of LLM applications. The MCP server handles everything automatically. Your AI agent sends JSON like it always did, the server converts to HEDL (saving you 56% on tokens), the LLM processes it, and responses come back in your original format. Zero code changes on your end. --- Quickstart Option 1: MCP Server (Recommended) The fastest way to start saving tokens is the MCP server. Add HEDL to your AI agen","default_branch":null,"files":null,"tree":[],"storefront":"/r/dweve-ai","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/dweve-ai/hedl/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}