Bazi MCP vs Next Devtools MCP

A side-by-side look at the Bazi MCP 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.

Bazi MCP logoBazi MCPSpirituality & Esoterica · Local subprocess (stdio)Deterministic Bazi / Four Pillars MCP server with True Solar Time, lunar/solar conversion, Da Yun luck cycles, branch interactions, reverse Bazi lookup, and OpenFate calculation metadata. Install: npx -y @openfate/bazi-mcp.67GreatAuth: no auth requiredNext 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 Bazi MCP for spirituality & esoterica work as a local process; 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?

Bazi MCP logoChoose Bazi MCP when

  • You need dedicated capabilities in the Spirituality & Esoterica domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: No auth required.
  • You want tools like calculate_bazi_chart, detect_bazi_interactions, calculate_true_solar_time.
Explore Bazi MCP

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.

SpecBazi MCP logoBazi MCPNext Devtools MCP logoNext Devtools MCP
CategorySpirituality & EsotericaDeveloper Tools
Quality signal67/100 · Great86/100 · Excellent
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthNo auth requiredNo auth required
PricingFreeFree
Required env varsNone listedNone listed
Verified ownerCommunity listing Verified
GitHub stars160832
Directory activity 3 views 0 installs 0 upvotes 9 views 0 installs 1 upvotes
Tools64

Tools & capabilities

Bazi MCP tools 6

  • calculate_bazi_chartCalculate a deterministic OpenFate Bazi/Four Pillars chart with True Solar Time correction, Day Master, DAYUN_SECOND_V2 onset receipts, Da Yun cycles, and branch interactions. Pass an exact birth time plus timezone or timezoneId for a calculated V2 onset; otherwise inspect the explicit unavailable/fallback receipt.
  • detect_bazi_interactionsDetect raw Earthly Branch relationship occurrences for a natal chart and optional annual and Da Yun branches. Preserves every matching pillar position, including repeated branches. Covers clashes, six-combinations, the eight central-branch half-trines (COMBINATION_HALF), full trines, directionals, punishments, destructions, and harms. Results establish relationship presence, not weights, cancellation, or automatic transformation; targetElement is an affinity, not transformed energy.
  • calculate_true_solar_timeCalculate OpenFate True Solar Time from civil birth time, longitude, timezone, and optional DST offset. Use this when explaining why the hour pillar may differ from ordinary clock-time tools.
  • reverse_bazi_to_solar_timesFind possible Gregorian datetimes that produce a given four-pillar Bazi string. This is useful when a user only has a Bazi chart or screenshot. This lookup uses clock-time pillars without location-based true solar correction.
  • get_openfate_bazi_policyReturn OpenFate calculation policy and LLM guidance for Bazi chart calls.
  • get_openfate_bazi_resourcesReturn canonical OpenFate URLs for charting, readings, compatibility, wealth, true solar time, and AI crawler metadata.

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.

Bazi MCP

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "openfate-ai-bazi-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@openfate/bazi-mcp"
      ]
    }
  }
}

Next Devtools MCP

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

Frequently asked questions

Bazi MCP is categorized under Spirituality & Esoterica and uses a local stdio subprocess. Next Devtools MCP belongs to Developer Tools and uses a local stdio subprocess. Pick Bazi MCP for spirituality & esoterica 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.

Bazi MCP is listed as free. Auth: no auth required. 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 openfate-ai-bazi-mcp and vercel-next-devtools-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Bazi MCP has a quality signal of 67/100 (Great) with 3 views, 0 installs and 160 GitHub stars. Next Devtools MCP has 86/100 (Excellent) with 9 views, 0 installs and 832 GitHub stars.