Cold Leads vs Magic MCP
A side-by-side look at the Cold Leads and Magic MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
C
Cold LeadsDeveloper Tools · Local subprocess (stdio)B2B outreach CRM for AI agents: contacts, verification, approved campaigns, replies, follow-ups.53GoodAuth: api key requiredVerdict: choose Cold Leads for developer tools work as a local process; choose Magic MCP for developer tools as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
CChoose Cold Leads when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
COLDLEADS_API_KEY, COLDLEADS_API_BASE. - You want tools like
verify_email, search_leads, provision_account_and_get_payment_link.
Choose Magic MCP when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
TWENTY_FIRST_API_KEY, API_KEY_21ST.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | C Cold Leads | |
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Quality signal | 53/100 · Good | 53/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | API key required | API key required |
| Pricing | Not declared | Paid service |
| Required env vars | COLDLEADS_API_KEYCOLDLEADS_API_BASE | TWENTY_FIRST_API_KEYAPI_KEY_21ST |
| Verified owner | Community listing | Community listing |
| GitHub stars | 0 | 5,997 |
| Directory activity | 0 views 0 installs 0 upvotes | 16 views 1 installs 0 upvotes |
| Tools | 4 | Not listed |
| Full listing | View Cold Leads | View Magic MCP |
Tools & capabilities
Cold Leads tools 4
verify_emailVerification of one address: syntax, disposable domain, role account and MX records, plus an SMTP mailbox and catch-all check when Cold Leads can open an SMTP connection to the recipient's mail server (otherwise `reasons` contains `smtp_unreachable` and `catch_all` is `null`). Returns `valid`, `ris…search_leadsContacts already in your Cold Leads CRM for a company domain, with an optional role keyword: e-mail, name, company, stage, tags, verification status and a `do_not_contact` flag. Cold Leads has no third-party lead database.provision_account_and_get_payment_linkFor agents without a key: creates a pending account for the human owner and returns a Stripe payment link for the Business plan. The human decides and pays.check_provisioning_statusAfter the owner paid: returns the API key exactly once (with the `claim_token`). The server starts using it immediately.
Magic MCP 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.
Cold Leads
{
"mcpServers": {
"cold-leads": {
"command": "npx",
"args": [
"-y",
"@coldleads/mcp-server"
],
"env": {
"COLDLEADS_API_KEY": "YOUR_COLDLEADS_API_KEY_HERE",
"COLDLEADS_API_BASE": "YOUR_COLDLEADS_API_BASE_HERE"
}
}
}
}
Magic MCP
{
"mcpServers": {
"21st-dev-magic-mcp": {
"command": "npx",
"args": [
"-y",
"@21st-dev/cli@latest"
],
"env": {
"TWENTY_FIRST_API_KEY": "YOUR_TWENTY_FIRST_API_KEY_HERE",
"API_KEY_21ST": "YOUR_API_KEY_21ST_HERE"
}
}
}
}
Frequently asked questions
Cold Leads is categorized under Developer Tools and uses a local stdio subprocess. Magic MCP belongs to Developer Tools and uses a local stdio subprocess. Pick Cold Leads for developer tools work and Magic MCP 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.
Cold Leads has no declared pricing — check the project's own site. Auth: api key required. Magic MCP is listed as a paid service. Auth: api key required. 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 cold-leads and 21st-dev-magic-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Cold Leads has a quality signal of 53/100 (Good) with 0 views, 0 installs and 0 GitHub stars. Magic MCP has 53/100 (Good) with 16 views, 1 installs and 5,997 GitHub stars.