SignalVault is a cybersecurity infrastructure layer that acts as a secure proxy between applications and AI providers like OpenAI and Anthropic. It provides developers and startups with PII detection, secret scanning, and immutable audit logs to ensure compliance and security. The platform is available as a web-based dashboard and API, offering subscription pricing starting at $49 per month with unlimited logging capabilities.

What are the key strengths of SignalVault?

The key strengths of SignalVault include: Persistent logging with AES-256-GCM encryption and zero data caps on all pricing tiers., Bypass-free PII and secret detection for emails, credentials, and financial data., Flexible integration via Python and Node.js SDKs or a direct base URL proxy., and Integrated budget controls with automated alerting for token usage and cost limits..

How much does SignalVault cost?

SignalVault is available via subscription. Pricing starts at $49.

What platforms does SignalVault support?

SignalVault is available on Web and API.

Who is SignalVault for?

SignalVault is designed for Developers, DevOps Engineers, and Startups.

What are alternatives to SignalVault?

Some alternatives to SignalVault include Portkey, Helicone, LangFuse, Lakera Guard, and LiteLLM.

What can you do with SignalVault?

You can use SignalVault for Runtime Threat Detection, Monitoring & Alerting, and AI Agents.

SignalVault

The trust layer for AI applications

@elliotjondev

Published on Mar 31, 2026

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About SignalVault

SignalVault is an infrastructure layer that sits between your application and AI providers like OpenAI and Anthropic. Every prompt and response flows through SignalVault's proxy, where it's encrypted, scanned for violations, and logged with a complete audit trail. THE PROBLEM Teams ship AI features fast. Audit logs come later - if at all. PII and secrets slip through prompts undetected. When a security team asks "show me every prompt that contained customer data," most teams have nothing to show. SignalVault fixes that. HOW IT WORKS Route your AI requests through SignalVault using the Python SDK, Node.js SDK, or direct proxy. Your existing OpenAI or Anthropic code works unchanged - just point at a different base URL. Every request is then: • Logged with AES-256-GCM encryption - immutable, tamper-proof audit trail • Scanned for PII - emails, SSNs, phone numbers, credit card numbers, IP addresses • Checked for secrets - API keys, bearer tokens, AWS credentials, connection strings • Evaluated against guardrail rules with configurable actions: block, warn, or redact • Tracked for token usage and cost Integration takes minutes, not days. No code rewrites, no proprietary SDK lock-in. KEY FEATURES Encrypted audit logging: Every prompt and response stored with AES-256-GCM via Cloak. API keys hashed with HMAC-SHA256. Raw keys and unencrypted payloads are never persisted. Export-ready for SOC2 and GDPR reviews. PII detection: Pattern-based detection catches emails, phone numbers, SSNs, credit card numbers, and more before they reach the AI provider. Configure rules to block the request, warn and log, or redact the sensitive content automatically. Secret scanning: Detects API keys, bearer tokens, AWS keys, private keys, and connection strings leaking through prompts. Same block/warn/redact actions. Budget controls: Set monthly cost limits and daily token caps per app. Receive alerts via email or webhook when thresholds are approaching. A budget.exceeded event fires when limits are hit. Guardrail rules: Core rules (PII, secrets, budgets) included on all plans. Growth plan adds custom rules - write your own guardrail policies with pattern matching to enforce what your AI can and can't do. Mirror Mode: Async logging that stays completely off the request path. Zero added latency. Shows what would have been caught without blocking anything. Useful for teams that want visibility before turning on enforcement. Compliance exports: One-click CSV and JSON audit exports included on all plans - not gated behind enterprise pricing. Ready for SOC2, GDPR, HIPAA, and security reviews. Email and webhook alerts: Get notified immediately when policy violations occur, budgets are exceeded, or AI errors spike. POST to Slack, Teams, Discord, or any HTTPS endpoint. Unlimited logging: No log caps on any tier. Every request is recorded, always. Competitors cap logs and stop recording when limits are hit - SignalVault never stops watching. WHAT MAKES SIGNALVAULT DIFFERENT Most AI gateways focus on routing and model switching. SignalVault focuses on trust and compliance - the part that matters when a CISO asks for an audit trail. Three things set it apart: Unlimited logging on every plan. Competitors like Portkey cap at 3M logs on their Pro tier and stop recording. SignalVault logs everything, always. Compliance exports included from day one. Other tools gate CSV/JSON audit exports behind $5K+/month enterprise plans. SignalVault includes them on all tiers. Built for reliability. The entire stack - proxy, detection engine, rule system, and dashboard - is pure Elixir running on the BEAM. No JavaScript frameworks, no Python workers. The BEAM was built for telecom-grade fault tolerance and high concurrency, which is exactly what a proxy needs. TECH STACK Runtime: Elixir / BEAM Framework: Phoenix LiveView Encryption: AES-256-GCM via Cloak Key hashing: HMAC-SHA256 API format: OpenAI-compatible Database: PostgreSQL PRICING Per-app subscriptions. Each app gets its own plan. Starter ($49/month): Production environment, 30-day retention, core rules, unlimited logging, compliance exports. Growth ($149/month): All environments (dev, staging, production), 90-day retention, custom rules, email + webhook alerts, Mirror Mode, priority support. Free to try with 100 requests, no credit card required. Built by a solo founder with a background in professional security tooling.