2Captcha MCP vs Riddle
A side-by-side look at the 2Captcha MCP and Riddle MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
R
RiddleDeveloper ToolsBuild, publish and analyze quizzes, polls, forms and personality tests. Riddle account required.37FairAuth: not declaredVerdict: choose 2Captcha MCP for communication work as a local process; choose Riddle for developer tools. 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.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | R Riddle | |
|---|---|---|
| Category | Communication | Developer Tools |
| Quality signal | 53/100 · Good | 37/100 · Fair |
| Install command | Confirmed | Not confirmed yet |
| Transport | 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
Riddle 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"
}
}
}
}
Riddle
No confirmed install command for Riddle yet — follow the setup steps linked from its listing page rather than a guessed package name.
Frequently asked questions
2Captcha MCP is categorized under Communication and uses a local stdio subprocess. Riddle belongs to Developer Tools and uses an install path we have not confirmed yet. Pick 2Captcha MCP for communication work and Riddle 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. Riddle has no confirmed install command yet — follow its own setup instructions.
2Captcha MCP is bring-your-own-key: usage is billed by the API provider you supply a key for. Auth: api key required. Riddle 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 riddle 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. Riddle has 37/100 (Fair) with 0 views, 0 installs and 0 GitHub stars.