blackwell-systems/gcf

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The AI-native wire format for structured data. 100% comprehension on every frontier model. 50-92% fewer tokens than JSON. 43B+ lossless round-trips across 17 formats. Spec v3.4 Stable.

36 ★1 forksUpdated 18d ago

What you need to know

GCF is an AI-native wire format for structured data designed as an efficient alternative to JSON for agent-to-agent and MCP communication, with a playground at gcformat.com.

Install

Use the GCF format library or the playground at gcformat.com

Usage

  • •Encode/decode structured data in GCF for AI communication
  • •Benchmarked with 2500+ evals

Key features

  • ✓AI-native structured data wire format
  • ✓Benchmarks across 2500+ evals
  • ✓Playground and site at gcformat.com
  • ✓MIT license

Best for

High-efficiency structured data exchange between AI agents.

Documentation ↗

Reviewed 2026-08-11

Topics

agent-communicationai-agentsanthropicdata-serializationgcfgeminigraph-compact-formatjson-alternativellmllm-benchmarkmcpmcp-toolsmodel-context-protocolopenaistructured-datatoken-efficiencytoken-optimizationtokenstoon-alternativewire-format
Stars
36★
Forks
1
Language
—
License
MIT
Created
2026-06-03
Last push
2026-08-18