Focused Tool · Apache 2.0 · Single Binary · Developer Tools

Self-hosted HTTP request inspector

Inspect and analyze HTTP requests in real time. See headers, body, timing, and response codes for every request hitting your service. Charles Proxy without the $50 license.

Install Probe Free Complete — all 150 tools $29/mo

A devops team integrates Probe into their CI pipeline. A post-deploy hook creates a capture record via the API. The stats endpoint feeds a Grafana panel. When something goes wrong, the team searches captures by keyword to find related records without switching tools.

Why self-host your HTTP request inspector

Privacy-conscious teams often build internal captures workflows in Notion or Google Sheets because the alternative is a $200/month SaaS contract. Probe gives you a purpose-built tool at a fraction of the cost, running on infrastructure you already control.

Endpoints
Architecture

On first launch, Probe initializes a WAL-mode SQLite database and starts an HTTP server. The web dashboard and API share the same port. Creating a capture is a POST with JSON — the only required field is name. The response includes the generated ID and timestamp. Listing supports search, filtering, and returns items in reverse chronological order.

Charles Proxy at $50 one-time.

Self-hosted HTTP request inspector. Self-hosted on your infrastructure. Your data never leaves your server.

Quickstart

Running in under a minute.

Download
curl -fsSL https://stockyard.dev/install.sh | sh -s -- --tool probe
Run
PORT=9090 ./probe
Open
http://localhost:9090

Single binary. Embedded SQLite. No Docker. No database. No dependencies.

Pricing

Free to start. Pro when you need it.

Free
$0
forever
  • 1,000 requests/day
  • Single binary, embedded SQLite
  • Apache 2.0 — modify freely
Pro
$0.99
per month
  • Unlimited requests, saved captures, traffic replay, export
  • License key, no cloud dependency
  • Email support

License key by email. One env var.

Your license key arrives by email within 5 minutes of checkout. Set it as an environment variable and restart the binary.

export PROBE_LICENSE_KEY=stockyard_xxxxxxxxxxxxxxxxxxxx
./probe

No cloud connectivity required. The binary validates the key offline with Ed25519 signatures.

Part of the Stockyard family — 150 focused self-hosted tools · Complete bundle $29/mo · stockyard.dev