Sparrow · Office #42,298

What it is

Calls itself “webhook delivery server”.

• Calls itself: webhook delivery server

“Sparrow is an open-source webhook delivery server”

Where it puts itself

Claims “One Go binary. One PostgreSQL database.”. Rules out “No Kafka”, “No Redis” and “No sidecar queue”.

• Superlative claim: One Go binary. One PostgreSQL database.
• Says it will not: No Kafka · No Redis · No sidecar queue

“The core stays one small server; every satellite — including yours — inherits retries, signing, and the delivery audit trail.”

“One Go binary. One PostgreSQL database.”

What it costs

A free tier, free forever. No monthly or yearly plan. No one-time option.

• One-time: no
• Monthly: no
• Yearly: no
• Free plan: free forever

“Free, MIT.”

Who it sells to

Sells to developers.

• Sells to: developers

“The REST API is described by a committed OpenAPI 3.1 spec, so you can generate a client in any language.”

How it runs

Can be self-hosted. Offers an API. Open source. Built with GitHub Pages.

• Runs where: self-hosted
• API: yes
• Open source: yes
• Built with: GitHub Pages

“Self-hosted webhook delivery.”

“The REST API is described by a committed OpenAPI 3.1 spec”

What it works with

Names Discord, GitHub and 5 more on its pages.

• Names: Discord · GitHub · PagerDuty · +4

“…recipes for Slack/Discord/PagerDuty”

“Cron schedules plus Stripe and GitHub webhooks”

What it offers as proof

Live, no waitlist. Compliance: OpenSSF Best Practices. Instant signup. Publishes docs and a blog.

• Compliance: OpenSSF Best Practices
• Instant signup: yes

“Get started”

“OpenSSF Best Practices”