Spec Driven Development vs Loki Mode

A side-by-side look at the Spec Driven Development and Loki Mode MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

Spec Driven Development logoSpec Driven DevelopmentCoding Agents · Local subprocess (stdio)MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.44FairAuth: not declaredLoki Mode logoLoki ModeCoding Agents · Local subprocess (stdio)Autonomous spec-to-product coding-agent CLI with an MCP server exposing 34 tools over stdio.53GoodAuth: not declared

Verdict: choose Spec Driven Development for coding agents work as a local process; choose Loki Mode for coding agents as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Spec Driven Development logoChoose Spec Driven Development when

  • You need dedicated capabilities in the Coding Agents domain.
  • You prefer a local stdio subprocess transport.
Explore Spec Driven Development

Loki Mode logoChoose Loki Mode when

  • You need dedicated capabilities in the Coding Agents domain.
  • You prefer a local stdio subprocess transport.
Explore Loki Mode

Feature & specification comparison

Rows where the two servers differ are marked.

SpecSpec Driven Development logoSpec Driven DevelopmentLoki Mode logoLoki Mode
CategoryCoding AgentsCoding Agents
Quality signal44/100 · Fair53/100 · Good
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthNot declaredNot declared
PricingNot declaredBYOK (pay the provider)
Required env varsNone listedNone listed
Verified ownerCommunity listingCommunity listing
GitHub stars4391,106
Directory activity 1 views 0 installs 0 upvotes 3 views 0 installs 0 upvotes
ToolsNot listedNot listed

Tools & capabilities

Spec Driven Development tools

No tool names declared yet. Check the project README from the listing page.

Loki Mode 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.

Spec Driven Development

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "spec-driven-development": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-spec-driven-development@latest"
      ]
    }
  }
}

Loki Mode

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "loki-mode": {
      "command": "npx",
      "args": [
        "-y",
        "loki-mode"
      ]
    }
  }
}

Frequently asked questions

Spec Driven Development is categorized under Coding Agents and uses a local stdio subprocess. Loki Mode belongs to Coding Agents and uses a local stdio subprocess. Pick Spec Driven Development for coding agents work and Loki Mode for coding agents.

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.

Spec Driven Development has no declared pricing — check the project's own site. Loki Mode is bring-your-own-key: usage is billed by the API provider you supply a key for. 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 spec-driven-development and loki-mode as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Spec Driven Development has a quality signal of 44/100 (Fair) with 1 views, 0 installs and 439 GitHub stars. Loki Mode has 53/100 (Good) with 3 views, 0 installs and 1,106 GitHub stars.