2Captcha MCP vs Swarmail
A side-by-side look at the 2Captcha MCP and Swarmail MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
S
SwarmailDeveloper Tools · Local subprocess (stdio)Local mail between coding-agent sessions on one machine; relays to a running Swarmail server.40FairAuth: not declaredVerdict: choose 2Captcha MCP for communication work as a local process; choose Swarmail 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?
Choose 2Captcha MCP when
- You need dedicated capabilities in the Communication domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
TWOCAPTCHA_API_KEY. - You want tools like
twocaptcha_solve_normal, twocaptcha_solve_text, twocaptcha_solve_audio.
SChoose Swarmail when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a local stdio subprocess transport.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | S Swarmail | |
|---|---|---|
| Category | Communication | Developer Tools |
| Quality signal | 53/100 · Good | 40/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | API key required | Not declared |
| Pricing | BYOK (pay the provider) | Not declared |
| Required env vars | TWOCAPTCHA_API_KEY | None listed |
| Verified owner |
Tools & capabilities
2Captcha MCP tools 28
twocaptcha_solve_normalfile_path` xor `file_base64twocaptcha_solve_texttexttwocaptcha_solve_audiofile (xor), `audio_langtwocaptcha_solve_gridfile (xor)twocaptcha_solve_canvasfile (xor)twocaptcha_solve_coordinatesfile (xor)twocaptcha_solve_rotatefiles: listtwocaptcha_solve_vkimagefiles`, `stepstwocaptcha_solve_recaptchasitekey`, `url`, `version`, `enterprisetwocaptcha_solve_hcaptchasitekey`, `urltwocaptcha_solve_turnstilesitekey`, `url` (+ `data`/`pagedata` for CF Challenge)twocaptcha_solve_funcaptchasitekey`, `url- +16 more on the listing page
Swarmail 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.
2Captcha MCP
{
"mcpServers": {
"2captcha-mcp": {
"command": "uvx",
"args": [
"twocaptcha-mcp"
],
"env": {
"TWOCAPTCHA_API_KEY": "YOUR_TWOCAPTCHA_API_KEY_HERE"
}
}
}
}
Swarmail
{
"mcpServers": {
"swarmail": {
"command": "npx",
"args": [
"-y",
"swarmail-mcp"
]
}
}
}
Frequently asked questions
2Captcha MCP is categorized under Communication and uses a local stdio subprocess. Swarmail belongs to Developer Tools and uses a local stdio subprocess. Pick 2Captcha MCP for communication work and Swarmail 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.
2Captcha MCP is bring-your-own-key: usage is billed by the API provider you supply a key for. Auth: api key required. Swarmail 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 2captcha-mcp and swarmail as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, 2Captcha MCP has a quality signal of 53/100 (Good) with 4 views, 0 installs and 3 GitHub stars. Swarmail has 40/100 (Fair) with 0 views, 0 installs and 1 GitHub stars.