HAL vs Veto
A side-by-side look at the HAL and Veto MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
V
VetoDeveloper ToolsTurn OpenAPI services into tools an agent can call under your rules.36FairAuth: not declaredVerdict: choose HAL for developer tools work as a local process; choose Veto for developer tools. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose HAL when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You have the keys it needs:
HAL_SWAGGER_FILE, HAL_API_BASE_URL, HAL_SECRET_API_KEY, HAL_WHITELIST_URLS, HAL_BLACKLIST_URLS, HAL_ALLOW_MICROSOFT. - You want tools like
http-get, http-post, http-put.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | V Veto | |
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Quality signal | 61/100 · Good | 36/100 · Fair |
| Install command | Confirmed | Not confirmed yet |
| Transport | Local subprocess (stdio) | — |
| Auth | No auth required | Not declared |
| Pricing | Free | Not declared |
| Required env vars | HAL_SWAGGER_FILEHAL_API_BASE_URLHAL_SECRET_API_KEYHAL_WHITELIST_URLSHAL_BLACKLIST_URLSHAL_ALLOW_MICROSOFT | None listed |
Tools & capabilities
HAL tools 8
http-getMake an HTTP GET request to a specified URL. Supports secret substitution using {secrets.key} syntax where 'key' corresponds to HAL_SECRET_KEY environment variables.http-postMake an HTTP POST request to a specified URL with optional body and headers. Supports secret substitution using {secrets.key} syntax in URL, headers, and body where 'key' corresponds to HAL_SECRET_KEY environment variables.http-putMake an HTTP PUT request to a specified URL with optional body and headers. Supports secret substitution using {secrets.key} syntax in URL, headers, and body where 'key' corresponds to HAL_SECRET_KEY environment variables.http-patchMake an HTTP PATCH request to a specified URL with optional body and headers. Supports secret substitution using {secrets.key} syntax in URL, headers, and body where 'key' corresponds to HAL_SECRET_KEY environment variables.http-deleteMake an HTTP DELETE request to a specified URL with optional headers. Supports secret substitution using {secrets.key} syntax in URL and headers where 'key' corresponds to HAL_SECRET_KEY environment variables.http-headMake an HTTP HEAD request to a specified URL with optional headers (returns only headers, no body). Supports secret substitution using {secrets.key} syntax in URL and headers where 'key' corresponds to HAL_SECRET_KEY environment variables.http-optionsMake an HTTP OPTIONS request to a specified URL to check available methods and headers. Supports secret substitution using {secrets.key} syntax in URL and headers where 'key' corresponds to HAL_SECRET_KEY environment variables.list-secretsGet a list of available secret keys that can be used with {secrets.key} syntax. Only shows the key names, never the actual secret values.
Veto 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.
HAL
{
"mcpServers": {
"hal": {
"command": "npx",
"args": [
"-y",
"hal-mcp"
],
"env": {
"HAL_SWAGGER_FILE": "YOUR_HAL_SWAGGER_FILE_HERE",
"HAL_API_BASE_URL": "YOUR_HAL_API_BASE_URL_HERE",
"HAL_SECRET_API_KEY": "YOUR_HAL_SECRET_API_KEY_HERE",
"HAL_WHITELIST_URLS": "YOUR_HAL_WHITELIST_URLS_HERE",
"HAL_BLACKLIST_URLS": "YOUR_HAL_BLACKLIST_URLS_HERE",
"HAL_ALLOW_MICROSOFT": "YOUR_HAL_ALLOW_MICROSOFT_HERE"
}
}
}
}
Veto
No confirmed install command for Veto yet — follow the setup steps linked from its listing page rather than a guessed package name.
Frequently asked questions
HAL is categorized under Developer Tools and uses a local stdio subprocess. Veto belongs to Developer Tools and uses an install path we have not confirmed yet. Pick HAL for developer tools work and Veto for developer tools.
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. Veto has no confirmed install command yet — follow its own setup instructions.
HAL is listed as free. Auth: no auth required. Veto 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 hal and veto as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, HAL has a quality signal of 61/100 (Good) with 2 views, 0 installs and 38 GitHub stars. Veto has 36/100 (Fair) with 0 views, 0 installs and 1 GitHub stars.