SERVER

Prior

Rank #23,101

io.cg3/prior

MCP server providing prior capabilities

3 versions

6 GitHub stars

by cg3inc (1 servers)View repository ↗Claim this server

First listed

Feb 17, 2026

Last publish date

Mar 28, 2026

OVERVIEW

Prior is a Model Context Protocol (MCP) server published by cg3inc. It ranks #23,101 of 137,492 servers tracked on MCP Toplist, and its repository has 6 GitHub stars. Prior is listed across 3 registries — Official MCP, PulseMCP and Glama, with 3 tracked versions. It was first listed on Feb 17, 2026 and most recently updated on Mar 28, 2026.

STANDING

#23,101of 137,492 tracked serversTop 25%

Ranks ahead of 114,391 of 137,492 servers on MCP Toplist.

CONNECT

Use Prior

API keyNeeds credentials

Requires user-supplied configuration before first use — typically an API key, token or connection string set via environment variables.

Remote · HTTP

claude mcp add --transport http prior https://api.cg3.io/mcp

This endpoint requires authentication — see the server’s docs for credentials.

npm package

claude mcp add prior -e "PRIOR_API_KEY=<your PRIOR_API_KEY>" -- npx -y @cg3/prior-mcp

Replace each placeholder with your own value before saving.

Remote · HTTP

[mcp_servers.prior]
url = "https://api.cg3.io/mcp"

Add to ~/.codex/config.toml. This endpoint requires authentication — see the server’s docs for credentials.

npm package

[mcp_servers.prior]
command = "npx"
args = ["-y", "@cg3/prior-mcp"]

[mcp_servers.prior.env]
PRIOR_API_KEY = "<your PRIOR_API_KEY>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

Remote · HTTP

https://api.cg3.io/mcp

Settings → Connectors → “Add custom connector”, then paste this URL. This endpoint requires authentication — see the server’s docs for credentials.

npm package

{
  "mcpServers": {
    "prior": {
      "command": "npx",
      "args": [
        "-y",
        "@cg3/prior-mcp"
      ],
      "env": {
        "PRIOR_API_KEY": "<your PRIOR_API_KEY>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "mcpServers": {
    "prior": {
      "url": "https://api.cg3.io/mcp"
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). This endpoint requires authentication — see the server’s docs for credentials.

npm package

{
  "mcpServers": {
    "prior": {
      "command": "npx",
      "args": [
        "-y",
        "@cg3/prior-mcp"
      ],
      "env": {
        "PRIOR_API_KEY": "<your PRIOR_API_KEY>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "servers": {
    "prior": {
      "type": "http",
      "url": "https://api.cg3.io/mcp"
    }
  }
}

Save as .vscode/mcp.json in your workspace. This endpoint requires authentication — see the server’s docs for credentials.

npm package

{
  "servers": {
    "prior": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cg3/prior-mcp"
      ],
      "env": {
        "PRIOR_API_KEY": "<your PRIOR_API_KEY>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "mcpServers": {
    "prior": {
      "serverUrl": "https://api.cg3.io/mcp"
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. This endpoint requires authentication — see the server’s docs for credentials.

npm package

{
  "mcpServers": {
    "prior": {
      "command": "npx",
      "args": [
        "-y",
        "@cg3/prior-mcp"
      ],
      "env": {
        "PRIOR_API_KEY": "<your PRIOR_API_KEY>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "mcpServers": {
    "prior": {
      "url": "https://api.cg3.io/mcp"
    }
  }
}

This endpoint requires authentication — see the server’s docs for credentials.

npm package

{
  "mcpServers": {
    "prior": {
      "command": "npx",
      "args": [
        "-y",
        "@cg3/prior-mcp"
      ],
      "env": {
        "PRIOR_API_KEY": "<your PRIOR_API_KEY>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.cg3%2Fprior.svg)](https://mcptoplist.com/server/io.cg3%2Fprior)

HTML

<a href="https://mcptoplist.com/server/io.cg3%2Fprior"><img src="https://mcptoplist.com/badge/io.cg3%2Fprior.svg" alt="MCP Toplist: Top 25% of 137,492" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

REGISTRIES

Listed on 3 registries

Official MCP

PulseMCP

Glama

ORGANIZATION

cg3inc

Organization

cg3inc

Servers in org

Versions across org

VERSIONS

Available versions (3)

Version	Published
0.5.22	Mar 28, 2026
0.5.21	Mar 28, 2026
0.1.0	Nov 25, 2024

FAQ

Frequently asked questions

Who maintains Prior?: Prior is maintained by cg3inc, which publishes 1 MCP server (3 total versions) tracked on MCP Toplist.
Is Prior listed on the Official MCP Registry?: Yes — Prior is listed on the Official MCP Registry, alongside PulseMCP and Glama.
How many versions does Prior have?: MCP Toplist tracks 3 versions of Prior, most recently published on Mar 28, 2026.
Where can I find the source code for Prior?: The source code for Prior is hosted at github.com/cg3inc/prior_mcp.

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