Developer Integrations & API Gateway

The Integrations module empowers partners, clients, and internal systems to securely interact with the SCRIPE platform. It provides high-performance API key authentication with constant-time secret verification, granular OAuth-style scope enforcement, Redis-backed distributed rate limiting, and real-time API telemetry tracking.

Integrations Architecture

Built for low latency (< 1ms authentication overhead) and strict multi-tenant isolation across high-volume external traffic.

• Scoped API Keys

  Generate prefixed API keys (sk_live_..., sk_test_...) with designated expiration dates and friendly labels.

• Granular Scope Delegation

  Restricted permission scopes (e.g. venue:read, billing:write) preventing external tokens from exceeding necessary privileges.

• Distributed Rate Limiting

  Redis token-bucket rate limiting enforcing per-minute request ceilings to safeguard platform stability.

• Real-Time Telemetry

  Audit logs capturing request origins, IP addresses, latency timings, and response HTTP codes.

• Tamper-Proof Hashing

  Cryptographic SHA-256 secret hashing with constant-time comparison to prevent timing vulnerabilities.

• Third-Party Connectors

  Extensible inbound and outbound webhook connectors for external CRM, payment, and analytics platforms.

Domain Aggregate Root: ApiKey

The ApiKey aggregate governs key lifecycle, cryptographic hash verification, scope assignments, and IP whitelisting.

public sealed class ApiKey : TenantAggregateRoot
{
    public string Name { get; private set; } = string.Empty;
    public string KeyPrefix { get; private set; } = string.Empty; // e.g. "sk_live_..."
    public string SecretHash { get; private set; } = string.Empty; // SHA-256 hash
    public List<string> Scopes { get; private set; } = new(); // "venue:read", "reservations:write"
    public List<string> AllowedIpAddresses { get; private set; } = new();
    public int RateLimitPerMinute { get; private set; } = 300;
    public DateTimeOffset? ExpiresAtUtc { get; private set; }
    public bool IsRevoked { get; private set; }

    public bool VerifySecret(string rawSecret)
    {
        if (IsRevoked || (ExpiresAtUtc.HasValue && ExpiresAtUtc.Value < DateTimeOffset.UtcNow))
            return false;

        var computedHash = ApiKeySecurity.ComputeSha256(rawSecret);
        return CryptographicOperations.FixedTimeEquals(
            Encoding.UTF8.GetBytes(SecretHash),
            Encoding.UTF8.GetBytes(computedHash)
        );
    }
}

API Key Authentication & Rate Limiting Pipeline

The sub-millisecond execution pipeline for validating and auditing incoming external API calls:

Primary API Endpoints

Key endpoints exposed by IntegrationsControllers for key management, scope modification, and usage telemetry.