Introduction

PromptJang is a trusted message delivery platform. Send events to any endpoint — a server, a service, or an AI agent — and we handle retries, cryptographic signing, and full delivery tracking. Your partners can also send events to you through the same platform.

พร้อมแจ้ง — Ready to Inform.

The Problem

Reliable message delivery is deceptively hard:

• Retries — endpoints go down, networks drop, servers return 500s. Events get lost silently.
• Trust — how does the receiver know the message really came from you? How do you prove delivery?
• Observability — did it arrive? What did the endpoint return? How long did it take?
• Recovery — your endpoint was down for 2 hours. Now what?
• Agents — as AI agents join the ecosystem, they need the same reliable delivery guarantees as human-operated services.

Most teams build a half-baked retry loop and move on. The result: silent failures, angry customers, 3am pages.

The Solution

PromptJang is the trusted middle layer between your service and any target:

Three steps:

1. Create an endpoint — tell us where to deliver (your customer's URL)
2. Send JSON — one POST request with your API key, no signing required
3. Check status — query by event ID or your own correlation ID

Bidirectional by Design

PromptJang works in both directions:

Outbound (you send to others): Create an endpoint pointing to your customer's URL. Send events, we deliver with retries and signing.

Inbound (others send to you): Create an endpoint pointing to your webhook URL. Give your API key to your customer. They send events through PromptJang to you.

Same platform. Same signing. Same retry logic. Same audit trail. Your customer is both sender and receiver depending on context.

Built for Agents

The target endpoint doesn't have to be a server. It can be an AI agent, a notification service, or any system that accepts HTTP requests. PromptJang delivers the same way:

• Signed payloads — the agent can verify the message came from a trusted source
• Idempotency — every event gets a unique ID the agent can use to avoid processing duplicates
• Retry with backoff — if the agent is busy, we retry automatically
• Full audit trail — request and response logged for every delivery attempt

As AI agents join company ecosystems, PromptJang becomes the trusted bridge between them.

What PromptJang Does For You

• Retries with backoff — failed deliveries retry automatically (60s, 120s, 240s, up to 5 attempts)
• Signs your webhooks — every outbound delivery is HMAC-SHA256 signed, so your target can verify authenticity
• Tracks every delivery — status code, latency, and error details for each attempt
• Event replay — re-deliver any past event with one API call
• Idempotency support — every event gets a unique ID your target can use to avoid processing duplicates
• SSRF protection — target URLs validated against private IPs and localhost

What You Don't Have To Build

Without PromptJang	With PromptJang
Retry queue with exponential backoff	One POST request
Signature generation and verification	We sign for you
Delivery attempt logging	Full audit trail in dashboard
Payload storage for replay	Stored automatically
Monitoring and alerting	Stats API + dashboard
SSRF protection on target URLs	Built-in