JSON Contracts

JSON Contracts is a local MCP server for transforming natural language into Git-controlled JSON contracts, JSON Schema validation, and structured LLM/agent outputs.

→ json-contracts/json-contracts · listed on glama

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// key findings

🚨

Known vulnerabilities in dependencies: 1 critical

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

// known CVEs in dependencies1 critical

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalvitest@3.2.4GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configJSON_CONTRACTS_ARGS

configJSON_CONTRACTS_COMMAND

configJSON_CONTRACTS_DIR— Then add the MCP config below to your agent host. Point at the json-contracts folder that init created.

configMCP_TRANSPORT— stdio Transport. v1 implements stdio.

configWATCH_CONTRACTS— true Watches local contracts and reloads on changes.

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 1 concrete improvement we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/json-contracts-json-contracts-azuv6k)](https://m8ven.ai/mcp/json-contracts-json-contracts-azuv6k)

commit: 68e8536dd0b998ceabd2cc18a34a8e31862a2b16

code hash: b49886b2099597647e7884cca697af6c493344c3538b47459766de5a3702cfb5

verified: 6/10/2026, 11:35:27 AM

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