plugmyagent

Langfuse

AI & ML Free key (no card)

AuthenticationFree key (no card)
Rate limit50,000 events/month on the free Cloud Hobby tier.

Documentation: langfuse.com ยท Checked Sep 18, 2026

About

Langfuse traces every prompt, completion, and tool call your agent makes, with cost, latency, and quality scores in one dashboard. The Cloud Hobby tier is free for 50,000 events a month with no card required, and the whole stack is MIT licensed so you can self-host it free.

Details

Free to start. You may need a free key, but no credit card.

Auth: Free key (no card)

Rate limit: 50,000 events/month on the free Cloud Hobby tier.

Verified: 2026-09-18

Best for: developer

Read the docs Back to catalog

Setup

  1. Create a free account at cloud.langfuse.com and start a project.
  2. Copy the public and secret keys from project settings.
  3. Install the Python or JS SDK and wrap your LLM calls; traces show up in seconds.
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