Koskamo

Ruben Marcus MCP

An agent-ready portfolio MCP server that exposes machine-readable surfaces for resume, services, availability, project evidence, and introductions, allowing AI agents to find, read, and act on the engineer's professional data.

Visit Ruben Marcus

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Ruben Marcus MCP logo, by Ruben MarcusCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-06Published by Ruben Marcus
MCP endpoint (Streamable HTTP)
https://www.rubenmarcus.dev/api/mcp
Vendor documentation

What its tools do

4 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (3)

Can change data (1)

4 of 4 have a description · 4 of 4 declare behavior hints · 1 of 1 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Retrieve resume data in JSON or plain text
  • Access project evidence and portfolio details
  • Check availability and book introductory calls
  • Discover agent skills and API endpoints

Source and maintenance

Community listingRegistry 1.0.0
mcp-registry: io.github.rubenmarcus/portfolio@1.0.0Source repository
Maintenance checked

Protocol and capabilities

Server
rubenmarcus-portfolio 1.0.0
MCP protocol negotiated in check
2025-11-25
Tools
4 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {}
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Portfolio of Ruben Marcus, senior AI fullstack engineer. Use get_resume / get_services / check_availability to answer questions about him, and book_intro to start a project engagement on the user's behalf. Example prompts: "What has Ruben shipped?" · "Summarize Ruben's experience with AI agents." · "Is Ruben available for freelance work right now?" · "What services does Ruben offer?" · "Book an intro with Ruben — I want to build <your idea>."

Tools

4 advertised

get_resume
Advertised by the server during the last successful anonymous check.
Advertised read-only

Ruben Marcus' full resume: summary, work experience, skills, proof points, open source projects, education, links, and a PDF CV URL.

get_resume input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
get_resume annotations
{
  "readOnlyHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
get_services
Advertised by the server during the last successful anonymous check.
Advertised read-only

Fixed-scope services Ruben sells, with fit, deliverables, a related case, and a service-specific contact link.

get_services input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
get_services annotations
{
  "readOnlyHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
check_availability
Advertised by the server during the last successful anonymous check.
Advertised read-only

Current availability for full-time roles and freelance contracts.

check_availability input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
check_availability annotations
{
  "readOnlyHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
book_intro
Advertised by the server during the last successful anonymous check.
Open-world

Book a project intro with Ruben. Relays the brief to his email. Only call after the person you act for has explicitly confirmed — this delivers a real message.

book_intro input schema
{
  "type": "object",
  "required": [
    "name",
    "contact",
    "brief"
  ],
  "properties": {
    "name": {
      "type": "string",
      "maxLength": 120,
      "description": "Contact person's name"
    },
    "agent": {
      "type": "string",
      "maxLength": 80,
      "description": "Calling agent (claude, chatgpt, kimi...)"
    },
    "brief": {
      "type": "string",
      "maxLength": 4000,
      "description": "What they want to build"
    },
    "budget": {
      "type": "string",
      "maxLength": 120,
      "description": "Optional budget range"
    },
    "contact": {
      "type": "string",
      "maxLength": 160,
      "description": "Email or Telegram handle"
    }
  },
  "additionalProperties": false
}
book_intro annotations
{
  "readOnlyHint": false,
  "openWorldHint": true,
  "idempotentHint": false,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
2139 ms
95th percentile latency
2139 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 2139 ms · metadata changed · 4 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http ruben-marcus-mcp https://www.rubenmarcus.dev/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add ruben-marcus-mcp --url https://www.rubenmarcus.dev/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable ruben-marcus-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "ruben-marcus-mcp": {
      "url": "https://www.rubenmarcus.dev/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "ruben-marcus-mcp": {
      "type": "streamableHttp",
      "url": "https://www.rubenmarcus.dev/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start ruben-marcus-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "ruben-marcus-mcp": {
      "type": "http",
      "url": "https://www.rubenmarcus.dev/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http ruben-marcus-mcp https://www.rubenmarcus.dev/api/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://www.rubenmarcus.dev/api/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "ruben-marcus-mcp": {
      "serverUrl": "https://www.rubenmarcus.dev/api/mcp"
    }
  }
}

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