CompletionKit vs ToughTongue AI
A side-by-side look at the CompletionKit and ToughTongue AI MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose CompletionKit for conversational ai work over a hosted endpoint; choose ToughTongue AI for conversational ai as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose CompletionKit when
- You need dedicated capabilities in the Conversational AI domain.
- You prefer a remote HTTP/SSE transport.
- You have the keys it needs:
COMPLETION_KIT_ENCRYPTION_PRIMARY_KEY, COMPLETION_KIT_ENCRYPTION_DETERMINISTIC_KEY, COMPLETION_KIT_ENCRYPTION_KEY_DERIVATION_SALT, OPENAI_API_KEY, ANTHROPIC_API_KEY, OLLAMA_API_ENDPOINT, OPENROUTER_API_KEY.
Choose ToughTongue AI when
- You need dedicated capabilities in the Conversational AI domain.
- You prefer a local stdio subprocess transport.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Conversational AI | Conversational AI |
| Quality signal | 41/100 · Fair | 47/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | COMPLETION_KIT_ENCRYPTION_PRIMARY_KEYCOMPLETION_KIT_ENCRYPTION_DETERMINISTIC_KEYCOMPLETION_KIT_ENCRYPTION_KEY_DERIVATION_SALTOPENAI_API_KEYANTHROPIC_API_KEYOLLAMA_API_ENDPOINTOPENROUTER_API_KEY | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 3 | 6 |
| Directory activity | 3 views 0 installs 0 upvotes | 3 views 0 installs 0 upvotes |
| Tools | Not listed | Not listed |
| Full listing | View CompletionKit | View ToughTongue AI |
Tools & capabilities
CompletionKit tools
No tool names declared yet. Check the project README from the listing page.
ToughTongue AI 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.
CompletionKit
{
"mcpServers": {
"completionkit": {
"url": "https://your-app.com/completion_kit/mcp"
}
}
}
ToughTongue AI
{
"mcpServers": {
"toughtongue-ai": {
"command": "npx",
"args": [
"-y",
"plugins"
]
}
}
}
Frequently asked questions
CompletionKit is categorized under Conversational AI and uses a remote HTTP/SSE transport. ToughTongue AI belongs to Conversational AI and uses a local stdio subprocess. Pick CompletionKit for conversational ai work and ToughTongue AI for conversational ai.
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.
CompletionKit has no declared pricing — check the project's own site. ToughTongue AI 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 completionkit and toughtongue-ai as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, CompletionKit has a quality signal of 41/100 (Fair) with 3 views, 0 installs and 3 GitHub stars. ToughTongue AI has 47/100 (Fair) with 3 views, 0 installs and 6 GitHub stars.