Prometheus MCP Server

by tjhop·io.github.tjhop/prometheus-mcp-server·v0.18.0·111 stars

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An API-complete MCP server to manage Prometheus-compatible backends.

A90/100grade A

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Safety scan

A90/100

full report

Adoption

Growing

111 stars

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Nobody has reviewed Prometheus MCP Server yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

Prometheus MCP Server tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings

–Code scanpackage could not be scannedn/a
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 1 days ago15/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year9/10

Overall 90/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How Prometheus MCP Server compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 90/100; higher than 83% of 48,273 servers
GitHub stars: 111; more than 95% of 28,534 servers

Install Prometheus MCP Server in Claude Code, Cursor or VS Code

claude mcp add prometheus-mcp-server -- docker run -i --rm ghcr.io/tjhop/prometheus-mcp-server:0.18.0

Add to Cursor

What the publisher says

From the Prometheus MCP Server repository's README, as published. We do not edit it. Read it on GitHub

Prometheus MCP Server

About

This is an MCP server to allow LLMs to interact with a running Prometheus instance via the API to do things like generate and execute promql queries, list and analyze metrics, etc.

Demos and Examples

Asking Claude to Investigate Slow Queries

The prompt used was:

querying my metrics is slow, can you help me figure out why?

Investigate metrics produced by the MCP server itself and suggest recording rules for SLOs

The prompt used was:

use the tools from the prometheus mcp server to investigate the metrics from

the mcp server and suggest prometheus recording rules for SLOs

Summarize Prometheus metric/label naming best practices

The prompt used was:

summarize prometheus metric/label name best practices

Report on the health of the Prometheus instance that powers prometheus.demo.prometheus.io

The prompt used was:

please provide a comprehensive review and summary of the prometheus server.

review it's configuration, flags, runtime/build info, and anything else that

you feel may provide insight into the status of the prometheus instance,

including analyzing metrics and executing queries

Tools

The Prometheus HTTP API outputs JSON data, and the tools in this MCP server return that JSON to the LLM for processing as it's structured and well understood by LLMs.

LLMs and Token/Context Efficiency

This MCP server supports the following options which have the potential to reduce token/context usage:

TOON Encoding

If token/context usage is a concern, this MCP server also supports converting the API's JSON data to the Token-Oriented Object Notation (TOON) format. While it is not guaranteed to reduce token usage, it is designed with token efficiency in mind. As noted on TOON's documentation, it excels at uniform arrays of objects; non-uniform/complex objects may still be more token-efficient in JSON. Real world token usage will depend on usage patterns, please review common workflows to determine if TOON output may be beneficial. Please see Flags for more information on the available flags and their corresponding environment variables.

API Response Truncation

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Prometheus MCP Server: common questions

Is Prometheus MCP Server safe?: Yes, by our scan: it is graded A (90/100). Read the Prometheus MCP Server safety report
How do I install Prometheus MCP Server?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Prometheus MCP Server need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Prometheus MCP Server maintained?: The last commit was 36 days ago (2026-09-27). The latest release is v0.18.0.
How does Prometheus MCP Server compare with other MCP servers?: safety score 90/100 (higher than 83% of 48,273 servers); github stars 111 (more than 95% of 28,534 servers). Full comparison.