Wasmagent Js vs Next Devtools MCP

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

Wasmagent Js logoWasmagent JsCode ExecutionWasmAgent MCP server — WASM-sandboxed code execution with capability manifests and Tasks API.35FairAuth: not declaredNext Devtools MCP logoNext Devtools MCPDeveloper Tools · Local subprocess (stdio)Official Next.js MCP server for coding agents. Provides runtime diagnostics, route inspection, dev server logs, docs search, and upgrade guides. Requires Next.js 16+ dev server for full runtime features.86ExcellentAuth: no auth required

Verdict: choose Wasmagent Js for code execution work; choose Next Devtools MCP for developer tools as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Wasmagent Js logoChoose Wasmagent Js when

  • You need dedicated capabilities in the Code Execution domain.
Explore Wasmagent Js

Next Devtools MCP logoChoose Next Devtools MCP when

  • You need dedicated capabilities in the Developer Tools domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: No auth required.
  • You want tools like nextjs_index, nextjs_call, nextjs_docs.
Explore Next Devtools MCP

Feature & specification comparison

Rows where the two servers differ are marked.

SpecWasmagent Js logoWasmagent JsNext Devtools MCP logoNext Devtools MCP
CategoryCode ExecutionDeveloper Tools
Quality signal35/100 · Fair86/100 · Excellent
Install commandNot confirmed yetConfirmed
Transport—Local subprocess (stdio)
AuthNot declaredNo auth required
PricingNot declaredFree
Required env varsNone listedNone listed
Verified ownerCommunity listing Verified
GitHub stars6832
Directory activity 0 views 0 installs 0 upvotes 9 views 0 installs 1 upvotes
ToolsNot listed4

Tools & capabilities

Wasmagent Js tools

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

Next Devtools MCP tools 4

  • nextjs_indexDiscover running Next.js dev servers and list each one's runtime MCP tools.
  • nextjs_callCall a runtime tool on a discovered server (errors, routes, logs, Server Actions).
  • nextjs_docsGateway.** Point the agent at version-accurate docs in `node_modules/next/dist/docs/`.
  • browser_evalGateway.** Point the agent at the [`agent-browser`](https://github.com/vercel-labs/agent-browser) CLI for browser automation.

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.

Wasmagent Js

No confirmed install command for Wasmagent Js yet — follow the setup steps linked from its listing page rather than a guessed package name.

Next Devtools MCP

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "vercel-next-devtools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "next-devtools-mcp@latest"
      ]
    }
  }
}

Frequently asked questions

Wasmagent Js is categorized under Code Execution and uses an install path we have not confirmed yet. Next Devtools MCP belongs to Developer Tools and uses a local stdio subprocess. Pick Wasmagent Js for code execution work and Next Devtools MCP 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. Wasmagent Js has no confirmed install command yet — follow its own setup instructions.

Wasmagent Js has no declared pricing — check the project's own site. Next Devtools MCP is listed as free. Auth: no auth required. 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 mcp-server-163 and vercel-next-devtools-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Wasmagent Js has a quality signal of 35/100 (Fair) with 0 views, 0 installs and 6 GitHub stars. Next Devtools MCP has 86/100 (Excellent) with 9 views, 0 installs and 832 GitHub stars.