json-contracts

JSON Contracts

JSON contracts for AI agents.

JSON Contracts is a local MCP server for natural-language-to-JSON workflows using Git-controlled JSON contracts and JSON Schema validation.

mkdir my-json-contracts
cd my-json-contracts
npx -y json-contracts@latest init
npx -y json-contracts-studio@latest

Open:

http://127.0.0.1:5177

json-contracts — local stdio MCP server, CLI validator, starter contracts, and MCP Registry package
json-contracts-studio — local browser Studio for testing natural-language-to-JSON contracts, repair loops, and contract drafting

MCP server:

npx -y json-contracts@latest

Studio:

npx -y json-contracts-studio@latest

MCP Registry:

io.github.json-contracts/json-contracts

npm: