Without information about those operations, its specific use and the problem it solves cannot be stated reliably.

cbioportal — MCP server by BeyondTheProtocol/polaris

cbioportal

cbioportal is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from BeyondTheProtocol/polaris. Its token cost is not measured, scanned A, original, AGPL-3.0.

An MCP server called `cbioportal`, configured to run from a local Python environment. The supplied details do not describe its available operations.

In plain words

What is it for?: It is available as a configured connection for a coding agent, but the input does not identify a concrete task it supports.
Why use it?: Without information about those operations, its specific use and the problem it solves cannot be stated reliably.

Written for no agent in particular: it speaks MCP, so any client can run it. Also seen: listed in a Claude config.

One of 3 entries in .mcp.json upstream. Installing this one merges just its entry into your config; the other 2 are separate, each on its own page.

Good fit It is available as a configured connection for a coding agent, but the input does not identify a concrete task it supports.

Compare 6 mcp servers from other repositories ↓

Install with agentmods

npx agentmods add mcp/beyondtheprotocol/polaris/cbioportal

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/BeyondTheProtocol/polaris

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/mcp/beyondtheprotocol/polaris/cbioportal/github.svg)](https://agentmods.dev/mcp/beyondtheprotocol/polaris/cbioportal)

Your own site

<a href="https://agentmods.dev/mcp/beyondtheprotocol/polaris/cbioportal"><img src="https://agentmods.dev/badge/mcp/beyondtheprotocol/polaris/cbioportal/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/mcp/beyondtheprotocol/polaris/cbioportal"><img src="https://agentmods.dev/badge/mcp/beyondtheprotocol/polaris/cbioportal.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown No closer match found in the catalogue.

Security

Grade A, and why

cbioportal scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.mcp.json · 9 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Same file

What else `.mcp.json` configures

This page is one entry in a file that holds 3. Installing the file brings all of them; each is measured and scanned on its own page.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday First seen · 9 lines scan A dcf6a4ad2ab1

Subscribe to this mod's changes

cbioportal is an MCP server published in the GitHub repository BeyondTheProtocol/polaris (49 stars, last pushed 21d ago), licensed AGPL-3.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-07.

Building agents agentic-systems ai-agents cancer-research llm-orchestration open-science

cbioportal next to 6 mcp servers from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
cbioportalBeyondTheProtocol/polaris	MCP server	49	21d ago	AGPL-3.0	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
multi-mcpreliga/multi_mcp	MCP server	36	6d ago	MIT	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
prismaid-mcpopen-and-sustainable/prismaid	MCP server	31	2mo ago	AGPL-3.0	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
hal-mcpArpany-Tech/hal-mcp	MCP server	0	2mo ago	MIT	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
docs-langchainlangchain-ai/langchain	MCP server	149k	today	MIT	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
component-explorermicrosoft/vscode	MCP server	195k	today	MIT	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
codex_message_boardopenai/codex	MCP server	134k	today	Apache-2.0	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode