Rivemcp vs Gflow Cli

A side-by-side look at the Rivemcp and Gflow Cli MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

Rivemcp logoRivemcpMultimedia Process · Local subprocess (stdio)MCP server for creating and editing Rive (.riv) animation files. 139 tools for AI-driven animation.49FairAuth: api key requiredGflow Cli logoGflow CliMultimedia Process · Local subprocess (stdio)Drive Google Flow from an agent: Veo video and Imagen image generation45FairAuth: not declared

Verdict: choose Rivemcp for multimedia process work as a local process; choose Gflow Cli for multimedia process as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Rivemcp logoChoose Rivemcp when

  • You need dedicated capabilities in the Multimedia Process domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: API key required.
  • You have the keys it needs: POLYMATION_LICENSE_KEY.
Explore Rivemcp

Gflow Cli logoChoose Gflow Cli when

  • You need dedicated capabilities in the Multimedia Process domain.
  • You prefer a local stdio subprocess transport.
Explore Gflow Cli

Feature & specification comparison

Rows where the two servers differ are marked.

SpecRivemcp logoRivemcpGflow Cli logoGflow Cli
CategoryMultimedia ProcessMultimedia Process
Quality signal49/100 · Fair45/100 · Fair
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthAPI key requiredNot declared
PricingFreemiumBYOK (pay the provider)
Required env varsPOLYMATION_LICENSE_KEYNone listed
Verified ownerCommunity listingCommunity listing
GitHub stars1323
Directory activity 5 views 0 installs 0 upvotes 1 views 0 installs 0 upvotes
ToolsNot listedNot listed

Tools & capabilities

Rivemcp tools

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

Gflow Cli 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.

Rivemcp

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "rivemcp": {
      "command": "npx",
      "args": [
        "-y",
        "rivemcp"
      ],
      "env": {
        "POLYMATION_LICENSE_KEY": "YOUR_POLYMATION_LICENSE_KEY_HERE"
      }
    }
  }
}

Gflow Cli

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "gflow-cli": {
      "command": "uvx",
      "args": [
        "gflow-cli"
      ]
    }
  }
}

Frequently asked questions

Rivemcp is categorized under Multimedia Process and uses a local stdio subprocess. Gflow Cli belongs to Multimedia Process and uses a local stdio subprocess. Pick Rivemcp for multimedia process work and Gflow Cli for multimedia process.

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.

Rivemcp is listed as freemium — a free tier with paid plans. Auth: api key required. Gflow Cli 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 rivemcp and gflow-cli as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Rivemcp has a quality signal of 49/100 (Fair) with 5 views, 0 installs and 1 GitHub stars. Gflow Cli has 45/100 (Fair) with 1 views, 0 installs and 323 GitHub stars.