# json-contracts

> json-contracts — json-contracts-json-contracts. Use this tool when you need to validate and structure JSON data with Git-controlled contracts, enabling reliable conversion of natural language into schema-valid JSON outputs. It solves problems of data inconsistency and validation, particularly for large language models (LLMs) and agents. The tool takes in JSON data and natural language inputs, producing validated JSON outputs through a local contract server interface.

Canonical page: https://skillsregistry.net/skills/json-contracts-json-contracts  
JSON: https://api.skillsregistry.net/v1/skills/json-contracts-json-contracts

## Description

Local MCP server for natural-language-to-JSON workflows using Git-controlled JSON contracts and JSON Schema validation.

## Trust

- **Trust score (0–1):** 0.89
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **Category:** other
- **Updated:** 2026-09-21

## Source

- **Source listing:** [GitHub](https://github.com/json-contracts/json-contracts)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "json-contracts-json-contracts"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/json-contracts-json-contracts` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/json-contracts-json-contracts/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt