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PostHog projects, insights, flags and experiments as MCP tools.
About
PostHog projects, insights, flags and experiments as MCP tools.
Security Report
productmetrics is a straightforward PostHog REST client that authenticates with a personal API key from an environment variable, sends it only as a Bearer header to the PostHog API, and exposes tools that match its analytics purpose. No exfiltration, hardcoded secrets, or shell execution were found. The main points to be aware of are that the API host can be overridden by environment variables, which would send the key to any configured host, and that the server can create and modify feature flags. Supply chain analysis found 4 known vulnerabilities in dependencies (0 critical, 2 high severity). Package verification found 1 issue.
8 files analyzed · 9 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
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What You'll Need
Set these up before or after installing:
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-cloudcorprecords-productmetrics": {
"env": {
"POSTHOG_API_KEY": "your-posthog-api-key-here",
"POSTHOG_PROJECT_ID": "your-posthog-project-id-here"
},
"args": [
"-y",
"@reneturcios/productmetrics"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
productmetrics
PostHog product analytics as MCP tools, talking to the PostHog REST API. productmetrics is a clean-room rebuild of the core surface of the PostHog MCP server, under a new name: fresh code, no copied branding. The original is PostHog's hosted remote MCP (OAuth); hosted OAuth is NOT reproduced — this rebuild is a personal-API-key REST client for the same API.
Tools (core subset, 12)
list_projects, get_project, list_insights, get_insight,
query_insight, run_hogql_query, list_feature_flags,
get_feature_flag, create_feature_flag, update_feature_flag,
list_experiments, get_experiment.
Not in this subset: events and persons, actions and cohorts, annotations, dashboards, data warehouse, error tracking, surveys, session recordings, subscriptions, and organization admin tools.
Setup
Create a personal API key in PostHog and set it:
export POSTHOG_API_KEY=phx_...
export POSTHOG_PROJECT_ID=12345 # optional default project
Optionally override the host with POSTHOG_HOST (for example the EU
host) or the full base with POSTHOG_API_BASE_URL (default
https://app.posthog.com/api). Without the key, every tool call fails
with an error naming the missing variable. Pass project_id per call
or rely on the POSTHOG_PROJECT_ID fallback.
CLI
npx @reneturcios/productmetrics list_projects '{}'
npx @reneturcios/productmetrics mcp # stdio MCP server
Each tool name is a subcommand taking one JSON object argument.
MCP client config
{
"mcpServers": {
"productmetrics": {
"command": "npx",
"args": ["-y", "@reneturcios/productmetrics", "mcp"],
"env": { "POSTHOG_API_KEY": "phx_..." }
}
}
}
Docker
docker run -i -e POSTHOG_API_KEY ghcr.io/cloudcorprecords/productmetrics
Development
npm install
npm run build
npm test
License
MIT
Reviews
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