Solhint MCP vs JSON Contracts
A side-by-side look at the Solhint MCP and JSON Contracts MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
S
Solhint MCPLegal · Local subprocess (stdio)MCP server for Solhint — lint and autofix Solidity smart contracts from any MCP client53GoodAuth: no auth requiredVerdict: choose Solhint MCP for legal work as a local process; choose JSON Contracts for legal as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
SChoose Solhint MCP when
- You need dedicated capabilities in the Legal domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
lint_solidity, lint_file, lint_project.
Choose JSON Contracts when
- You need dedicated capabilities in the Legal domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
JSON_CONTRACTS_DIR.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | S Solhint MCP | |
|---|---|---|
| Category | Legal | Legal |
| Quality signal | 53/100 · Good | 35/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | No auth required | Not declared |
| Pricing | Free | Not declared |
| Required env vars | None listed | JSON_CONTRACTS_DIR |
| Verified owner |
Tools & capabilities
Solhint MCP tools 7
lint_solidityLint a Solidity source stringlint_fileLint one `.sol` file inside the projectlint_projectLint a project-relative globfix_solidityAutofix a Solidity source stringfix_fileAutofix one `.sol` fileexplain_ruleExplain any rule the linter shipsget_configShow the project's Solhint config
JSON Contracts tools
No tool names declared yet. Check the project README from the listing page.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Solhint MCP
{
"mcpServers": {
"solhint-mcp": {
"command": "npx",
"args": [
"-y",
"solhint-mcp"
]
}
}
}
JSON Contracts
{
"mcpServers": {
"json-contracts": {
"command": "npx",
"args": [
"-y",
"json-contracts@latest"
],
"env": {
"JSON_CONTRACTS_DIR": "YOUR_JSON_CONTRACTS_DIR_HERE"
}
}
}
}
Frequently asked questions
Solhint MCP is categorized under Legal and uses a local stdio subprocess. JSON Contracts belongs to Legal and uses a local stdio subprocess. Pick Solhint MCP for legal work and JSON Contracts for legal.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Solhint MCP is listed as free. Auth: no auth required. JSON Contracts has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add solhint-mcp and json-contracts as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Solhint MCP has a quality signal of 53/100 (Good) with 0 views, 0 installs and 0 GitHub stars. JSON Contracts has 35/100 (Fair) with 1 views, 0 installs and 1 GitHub stars.