Every/Spiral

• Spiral

  • AI writing partner from Every that learns a writer's voice from samples, uploads, or connected social channels, then drafts, edits, and rewrites text in that voice.
  • Pitched as a writing partner "for you and your agent": agents reach it over MCP or its API.
  • Sold on its own (Personal $15/month, Team $25/user/month) or in the Every bundle ($30/month) with Cora, Monologue, Sparkle, Proof, and Plus One. Prices as of 2026/11/02.

  • MCP server

    • Remote Streamable HTTP server at https://api.writewithspiral.com/mcp/. Per-client setup steps: agents.md.
    • Auth is OAuth by default: the first connection opens a browser to sign in. A paid plan can instead use an API key (spiral_sk_..., from Settings → Agent & API Keys) sent as Authorization: Bearer.
    • Claude/Code:
      • bash

        claude mcp add --transport http --scope user spiral https://api.writewithspiral.com/mcp/

    • Tools include spiral_generate_writing, spiral_personalize_text (rewrite in your voice), spiral_humanize_text (strip AI tells), spiral_add_voice_samples, and spiral_list_workspaces. The writing tools need a paid plan.
    • This garden's agents connect with the connect-spiral command in .rulesync/commands/.