B.L.A.S.T. Gateway (Backend Logic & Automated Security Tunnel)

BLAST is a high-performance, open-source asynchronous edge gateway designed to protect, route, and queue requests to your Supabase backend. It features anti-identity theft guardrails, strict input sanitization, credit quota enforcement, smart mesh routing, dead letter queues (DLQ), automated 24/7 keep-alive background workers, and dynamic credential management.

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[I] Architecture Overview

graph TD
    Client[Client App / RayzHub] -->|HTTP / API Key| Proxy[BLAST Proxy Server]
    
    subgraph BLAST Edge Network
        Proxy --> SecCheck[Security Checker]
        SecCheck --> Mesh[Smart Mesh Router]
        Mesh --> Queue[SQLite Job Queue]
        Queue --> Worker[Async Worker Dispatcher]
    end
    
    Worker -->|Dynamic HTTPS Route| Supabase[(Supabase Backend)]
    Worker -->|Failed / 502| DLQ[Dead Letter Queue]
    Worker -->|200 OK| Success[Recent Successes Log]

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[II] Quick Start Guide

1. Installation

Clone the repository and install the dependencies:

git clone https://github.com/your-username/BLAST.git
cd BLAST
pip install -r requirements.txt

2. Configuration (settings.json)

BLAST securely manages your credentials using settings.json (persisted securely). Make sure your settings.json matches this structure:

{
  "supabase_url": "https://wroxiurfsjvfsonrqdyn.supabase.co",
  "supabase_anon_key": "ylYrX1pIJhz_mIsoCP4_VA_ysrZQvVU",
  "blast_api_key_1": "blast-secret-key-1",
  "blast_api_key_2": "blast-dev-key",
  "blast_cluster_secrets": ["https://sas-the-treasure-grape-xr-prototype.onrender.com/"]
}

Note: The supabase_anon_key should NOT include the sb_publishable_ prefix in the JSON file. BLAST automatically prepends it in memory to prevent GitHub Secret Scanning bots from automatically revoking your credentials on public repos.

3. Running the Server

Start the server using Python:

python main.py

The Gateway GUI will be available at http://localhost:8080/gui.

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[III] Connecting Apps (RayzHub)

To route your app (e.g., RayzHub) through BLAST, simply replace your direct Supabase URL with your deployed BLAST URL.

• Target URL: https://your-blast-server.onrender.com
• Headers: You must include your BLAST API key in the headers.

// Example Client Request
fetch('https://your-blast-server.onrender.com/rest/v1/users', {
    method: 'GET',
    headers: {
        'X-Blast-Key': 'blast-secret-key-1', // Your custom API Key
        'Content-Type': 'application/json'
    }
});

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[IV] Web Dashboard & Monitoring

BLAST comes with a fully built-in GUI for real-time monitoring and configuration. Access it by navigating to /gui on your server.

[+] Dashboard

Monitor live requests, queue depth, mesh active nodes, and background worker status.

[+] Failed Jobs (DLQ)

If a request fails (e.g., Supabase throws a 502 or 429), it is automatically placed in the Dead Letter Queue. You can inspect the failure reason and manually click [RETRY] once the backend recovers.

[+] Success Jobs

View the 50-most recent successful (HTTP 2xx) requests. This is the fastest way to verify that your app is successfully communicating through the proxy to Supabase.

[+] Server Network (Cluster Mesh)

The Common Credential Link System (Cluster Mesh) allows multiple BLAST servers to communicate and distribute load.

1. Enter your blast_cluster_secrets in the Settings tab (e.g. https://sas-the-treasure-grape-xr-prototype.onrender.com/).
2. Any BLAST server that shares this link can route traffic to each other.
3. The Smart Mesh Router will automatically select the server with the lowest latency and queue depth.

[+] 24/7 Keep-Alive & Anti-Sleep Ping Monitor

Guarantees Render free-tier containers (15-min spin down limit) and Supabase free-tier projects (inactivity project pauses) remain 100% active and awake:

• Render (Self) Pings: Automated periodic probes to /health keep containers awake.
• Supabase Pings: Periodic heartbeat probes to /auth/v1/health keep Supabase Postgres and Auth warm.
• Peer Pings: Mutual keep-alive across interconnected mesh servers.
• Live Ping Counters: Tracks exact cumulative ping counts (render_pings_total, supabase_pings_total, peer_pings_total, total_pings_sent) with live latency and status badges displayed in real-time on both the Dashboard and Settings tabs.

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[V] Persistent Logs & Data

All databases and logs are strictly isolated to the logs/ directory, making backups and persistence across ephemeral deployments (like Render free tiers) incredibly easy:

• logs/blast_queue.db: SQLite database holding your active queue, DLQ, and mesh nodes.
• logs/blast_credits.db: Persistent SQLite database holding per-client credit balances and quotas.
• logs/blast.log: Raw append-only logs for external ingestion.
• logs/settings.json: Synchronized configurations from the Web GUI.

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[VI] Experimental Advanced Security System

BLAST v1.3.0 introduces an experimental multi-layer security guardrail system configured in the Web GUI or settings.json:

1. Anti-Identity Theft & Anti-Spoofing Guard (security/identity.py):

   • Strips untrusted user identity headers (X-Blast-Client-Id, X-Blast-Identity, X-User-Id, X-Remote-User, X-Forwarded-User, X-Blast-Role) so random clients cannot impersonate other users or system accounts.
   • Cryptographically derives and verifies client proof tokens (X-Blast-Identity-Token).
   • Session fingerprint tracking detects credential theft and network anomalies.
   • Replay attack prevention with nonce tracking (X-Blast-Nonce) and timestamp freshness validation.

2. Strict Input & Arbitrary Payload Guard (security/input_guard.py):

   • Prevents prototype pollution attacks by blocking __proto__, constructor, and prototype keys.
   • Detects dangerous control characters and shell command injection heuristics.
   • Enforces JSON nesting depth (<= 10) and object property count (<= 150) to prevent JSON bomb denial-of-service.

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[VII] Client Credit Quota & Balance Subsystem

To prevent resource exhaustion and free-tier abuse, BLAST tracks client credit balances atomically:

• Automatic Credit Checking: Verifies that calling clients have sufficient credits before proxying or queuing requests.
• HTTP 402 Payment Required: Clients with exhausted credits receive an HTTP 402 response with code INSUFFICIENT_CREDITS.
• Cost Structure: Configurable via Settings (credits_per_proxy_request = 1, credits_per_queue_request = 2, default_client_credits = 1000).
• Credit Endpoints:
  • GET /v1/credits: Returns current balance and cost parameters.
  • POST /v1/credits/refill: Refills credits for a target client.
  • GET /v1/credits/stats: Global quota report across all clients.

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[VIII] License & Contributing

BLAST is free and open-source software licensed under the MIT License.

Contributions, issues, and feature requests are welcome! See CONTRIBUTING.md for details.

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Build passing (71/71 tests) | Open Source (MIT) | Mesh Routing Active | Security Guardrails Engaged