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Chrome Extension + FastAPI Backend

Stop Reading Logs. Ask Your Traces
in Plain English

AI-powered debugging companion for Pydantic Logfire. Ask questions about your traces — get SQL queries, data tables, and charts back instantly.

Install Extension View Docs 10
Logfire Assistant — Chrome extension sidebar next to Logfire dashboard

Built with

Chrome Extension
FastAPI
Pydantic AI
PostgreSQL
Redis
WebSocket
React
TypeScript
Chrome Extension
FastAPI
Pydantic AI
PostgreSQL
Redis
WebSocket
React
TypeScript

Why use this?

Without Logfire Assistant

  • ✗ Writing SQL queries manually against Logfire schema
  • ✗ Context-switching between Logfire dashboard and tools
  • ✗ No automatic visualization of query results
  • ✗ Repeating common queries from memory
  • ✗ No conversation history or context

With Logfire Assistant

  • ✓ Ask questions in plain English
  • ✓ Inline sidebar right in the Logfire dashboard
  • ✓ Auto-generated tables and charts
  • ✓ Reusable prompt templates with slash commands
  • ✓ Full conversation history with project filtering

Everything you need to debug smarter

From natural language queries to auto-generated visualizations.

Natural Language Queries

Ask about your traces in plain English. No SQL knowledge required — the assistant translates your questions automatically.

Auto SQL Generation

Pydantic AI agent translates questions to optimized Logfire SQL. View the generated query or just read the results.

Auto Visualizations

Charts and data tables generated automatically from query results. Bar charts, timelines, and structured summaries.

Span Context Analysis

Click any span in Logfire — the assistant captures trace_id, span_id, and full context for precise debugging.

Custom Prompts

Create reusable prompt templates with slash commands. Built-in prompts for /errors, /costs, /slow, /performance, and more.

Conversation Memory

Full conversation history with search and project filtering. Resume any debugging session where you left off.

How does it compare?

See how it stacks up against alternatives.

Feature Logfire Assistant Manual SQL Generic AI Chat
Logfire-native SQL ✓ ✓ ✗
Span Context Aware ✓ ✗ ✗
Auto Charts ✓ ✗ ✗
Custom Prompts ✓ ✗ Partial
Conversation History ✓ ✗ ✓
Natural Language Input ✓ ✗ ✓

How it works

From question to insight in seconds.

1

Ask a question

Type in plain English — "What were the slowest requests in the last hour?"

2

AI generates SQL

Pydantic AI agent translates your question to optimized Logfire SQL.

3

Query executes

SQL runs against the Logfire API. Results stream back in real-time via WebSocket.

4

Get insights

Data tables, charts, or narrative answers — exactly what you need to debug.

Built for real debugging

From slow requests to cost tracking.

Debug Slow Requests

Find bottlenecks instantly. Ask which endpoints are slowest and get span-by-span timing breakdowns.

  • — Endpoint latency ranking
  • — Span-by-span timing
  • — Percentile analysis (p50, p95, p99)
  • — Comparison across time periods

LLM Usage & Costs

Track token usage, costs, and call counts across all your LLM providers in one place.

  • — Token usage by model
  • — Cost breakdown per provider
  • — Usage trends over time
  • — Auto-generated cost charts

Error Analysis

Find error patterns, frequencies, and root causes. Get structured analysis of what went wrong.

  • — Error frequency patterns
  • — Root cause analysis
  • — Error trends over time
  • — Affected endpoint mapping

See it in action

A Chrome extension that lives right next to your Logfire dashboard.

Data tables

Auto charts

SQL generation

Span context

Custom prompts

History

Frequently Asked Questions

Everything you need to know about our tools and projects.

What is Logfire Assistant?
A Chrome extension with a FastAPI backend that adds an AI-powered sidebar to the Pydantic Logfire dashboard. Ask questions about your traces in natural language, get SQL queries generated automatically, and see results as tables or charts — all without leaving your browser.
Do I need a Logfire account?
Yes. Logfire Assistant queries your Logfire data via the Logfire API. You need a Logfire account with at least one project that has trace data. The assistant uses your Logfire read token to access your data securely.
Which LLM providers work?
OpenAI, Anthropic, Google Gemini, and any OpenAI-compatible API. Configure your preferred provider in the backend settings. The AI generates Logfire-specific SQL queries optimized for the traces schema.
Can I create custom prompts?
Yes. Create reusable prompt templates with slash commands like /errors, /costs, or /slow. Templates can include variables and are saved per-project. Share them across your team for consistent debugging workflows.
Is my data stored?
Conversations are stored in your own PostgreSQL database that you host. No data is sent to third parties beyond the LLM API calls. The Chrome extension communicates only with your self-hosted FastAPI backend.
See all questions

Ready to stop reading logs line by line?

Install the extension, connect to Logfire, and ask your traces questions in plain English. Free and open-source.

Install Extension