Every query. Every actor.
Every time.
Engineers, applications, AI agents, contractors. Anyone with the connection string can run anything their role allows.
Safe Boundary is the proxy that verifies every caller, blocks destructive queries, rewrites the dangerous ones, masks PII automatically, and logs every action. Sub-millisecond and just one port change.
Your database is one bad query away from a very bad day
Traditional database firewalls were built for a world where every query came from a known engineer, on a known schema, with known intent.
That world is gone. Engineers ship faster. Applications multiply. Contractors come and go. AI agents now generate SQL at machine speed. The pattern-matching firewalls and shared app_user credentials you set up five years ago cannot keep up, and the audit report needs to be on someone's desk by Friday.
You don't know who actually ran the query
Five engineers share one app_user. Background workers and dashboards reuse the same connection. A contractor left last quarter, their credentials are still in someone's env file. When the auditor asks who deleted that row Tuesday, the honest answer is "we cannot tell."
One unsafe query is one keystroke away
DELETE FROM users without a WHERE. A DROP TABLE from a half-tested migration. A new service that got DELETE rights "just to test it." The query reaches your database in milliseconds, nobody is fast enough to catch it after the fact, and the damage propagates before anyone notices.
The compliance evidence keeps slipping out of reach
GDPR, HIPAA, PCI-DSS, SOC 2, every audit asks the same questions. Who has access. What they did. What was masked. Who approved it. Most teams answer with screenshots and best-effort logs. The average breach now costs $4.88M; in healthcare, $9.77M.
How Safe Boundary eliminates risk
Purpose-built for how databases are actually used today. Not a retrofitted legacy firewall, a new category of protection that sits in front of every query, from every actor: humans, services, scripts, AI agents.
The Real Problems
The connection string is still the only thing standing between an actor and your data, and it gets shared, baked into env files, and inherited by every new service
Even a small team ships thousands of queries per day; add applications and AI agents and you are at machine scale, manual review is not a plan
Pattern-matching firewalls only catch the strings someone already wrote a rule for; modern SQL, composed by ORMs, generated by LLMs, written ad-hoc by engineers, looks new every time
One unguarded query corrupts production data, leaks PII, or breaks a compliance control, the cleanup runs into millions and the post-mortem ruins quarters
Compliance evidence has to be assembled by hand every audit cycle: pulling logs, joining them, screenshotting them, and praying they line up
Why Safe Boundary is different
Instant query blocking
Block, rewrite, or inject, depending on what is safer. DROP TABLE is rejected. DELETE without WHERE is rewritten to be safe. Missing tenant predicates are added automatically. Zero-config presets out of the box, no matter who issued the query.
Deep SQL rewriting
Goes beyond blocking. Rewrites dangerous queries in real time to preserve the original intent while removing the risk. When anyone, engineer, service, or AI agent, issues DELETE FROM users, Safe Boundary rewrites it to be safe rather than rejecting it outright. No competitor does this.
Automated PII masking
AI-driven PII detection without manual column tagging. Names, emails, phone numbers, financial records, health data, masked in the result set before it leaves the database, for every consumer. GDPR, HIPAA, and PCI-DSS coverage built in.
Proxy-layer RLS enforcement
Native row-level security on PostgreSQL, Oracle's VPD, and SQL Server's RLS all have well-documented performance penalties on multi-tenant tables; MySQL has no native RLS at all. Safe Boundary enforces row-level isolation at the proxy layer, injecting optimized WHERE predicates directly into queries. Same security guarantees, orders of magnitude faster, across every engine. The rare security product that makes your database faster.
Query analytics & logging
Every intercepted query is logged, allowed, blocked, rewritten, masked, and tied to the verified caller. Full-text search across history. Dry-run new rules against historical logs to measure impact before you flip the switch.
Schema-aware enforcement
Understands your database structure. Policies enforced at the SQL layer with full semantic analysis, not regex, not signatures. Per-agent policies decide the gray-area cases. Migration agents can run DDL, application agents cannot, AI agents are read-only by default. You decide. Deterministic. Explainable. Reviewable in an audit.
How does Safe Boundary work?
A transparent proxy that sits between every caller, engineers, applications, AI agents, and your database (PostgreSQL, Oracle, SQL Server, or MySQL). Every query passes through deterministic enforcement, with sub-millisecond overhead.
Intercept
Every SQL query passes through Safe Boundary's proxy before reaching your database. One port change in your connection string, no agents, no sidecars, no schema changes.
Analyze
Deep semantic SQL analysis determines query structure, target objects, operations, and intent. Not pattern matching, but real understanding of what the query does and what it touches. PII column detection runs deterministically on column names and value formats. AI classification handles ambiguous cases like free-text columns and unstructured JSON. On Business and Enterprise, classification runs in your VPC.
Enforce
Policies are applied in real time. Destructive operations are blocked or rewritten. Sensitive columns are masked. Unauthorized writes are rejected. Missing tenant conditions are injected. Every action is logged.
Deliver
Safe queries pass through unmodified at wire speed. Blocked queries return clear error responses. Rewritten queries execute safely with the original intent preserved. Your application never knows the difference.
Built for the critical path
Safe Boundary runs inline on your production traffic without becoming a bottleneck. Drop it in, define your boundaries, and let every caller, human, application, or AI agent, work safely.
Sub-millisecond overhead
<1 msAdds less than 1 ms to query execution. The proprietary analysis engine, built on 22 years of SQL parsing technology, runs enforcement in microseconds. Designed for the critical path, not bolted on as an afterthought.
No database extensions required
Works with PostgreSQL, Oracle, SQL Server, and MySQL, no plugins, no engine modifications, no vendor lock-in. Compatible with Supabase, AWS RDS, Cloud SQL, Azure SQL, Oracle Autonomous Database, Aurora, and self-hosted variants. The same proxy binary speaks all four wire protocols natively.
Drop-in proxy deployment
No agents, no sidecars, no schema rewrites. Change one port in your connection string. Safe Boundary exposes an endpoint that speaks your database engine's native wire protocol and intercepts queries and data. Your application code stays untouched.
Control-plane / data-plane separation
From Pro upward the proxy deploys inside your VPC, so database traffic never leaves your environment. On Business and Enterprise the AI classification service deploys in your VPC too, so PII sample values stay there as well. The cloud control plane manages policies, model updates, and billing. It never sees query content or sample values. On Free and Startup the proxy and AI classification run on our hosted infrastructure, with sample values processed in-memory and not retained. Same architecture pattern as Cyral, Redpanda, and Streamkap.
Operationally boring. Architecturally invisible. Exactly what you want from security infrastructure.
Who Safe Boundary is for
From scrappy seed-stage SaaS to regulated enterprises. Safe Boundary keeps every actor inside the boundaries you define. Engineers. Services. AI agents. Contractors. Everyone.
AI startups on Supabase
Your LLM agents hit production databases with no guardrails. One port change and you have real-time protection, blocking, rewriting, and PII masking. Investor-ready compliance evidence from day one. Start free. Scale to Pro when you are ready.
Learn moreFinTech & payments
PCI-DSS compliance, real-time SQL injection prevention, and automated masking of financial data. Every query touching cardholder data is analyzed, masked, and logged. Structured audit trails for SOC 2 and PCI-DSS generated automatically.
Learn moreHealthcare SaaS
HIPAA-compliant database protection with automated PHI masking. Every query touching patient records is intercepted and enforced. The average healthcare breach costs $9.77 million. Safe Boundary provides the audit trail your compliance team needs.
Learn moreMulti-tenant SaaS
Tenant data isolation enforced at the database layer. Proxy-layer RLS eliminates the documented performance penalty of native row-level security on PostgreSQL, Oracle, and SQL Server, and adds the same isolation to MySQL which has none natively. Automatic injection of missing tenant conditions. Missing index detection for tenant-scoped queries.
Learn moreBuilt by a company that's been
empowering databases since 2004
Spectral Core is a fully independent software vendor with thousands of happy customers in over 100 countries, ranging from small businesses to Fortune 500 customers.
22 years in production
Spectral Core has been building database software since 2004, before AWS RDS existed, before PostgreSQL became the dominant developer database. Most competitors in the database security proxy space are 2–3 year old startups. Enterprise buyers pay for vendor stability.
Microsoft & Google Partner
Listed in both partner ecosystems. Enterprise procurement validation, co-marketing channels, and distribution through Microsoft AppSource and Google Cloud Marketplace. These partnerships cannot be shortcut.
ISO 27001 certified
International security standard already in place. SOC 2 Type II actively in progress. Most companies at this stage have not even started the certification process.
Transparent pricing
Self-serve pricing starting at free. No "contact sales" black box. No $50K minimum ACVs. Try the product on a real database before you talk to anyone. The Cloudflare model applied to database security.
Enterprise-grade protection
at startup-friendly prices
The average data breach in 2025 costs $4.88M. Safe Boundary is the cheaper line item.
- • 1 database
- • 25k queries / month
- • Blocking presets
- • AI rewriting in preview
- • Deterministic PII detection
- • Unlimited databases
- • 250k queries / DB / mo
- • Cloud-hosted
- • 30-day full-text log search
- • 24-hour email support
- • 2M queries / DB / mo
- • Proxy in your VPC
- • Full AI rewriting + PII masking
- • Proxy-layer RLS
- • SSO + SIEM forwarding
- • 10M queries / DB / mo
- • Proxy + AI in your VPC
- • HIPAA BAA
- • SOC 2 / HIPAA / PCI / GDPR
- • 99.99% SLA
- • Pooled volume
- • On-prem / air-gapped
- • BYOK + HSM
- • FedRAMP path
- • Dedicated SE + CSM
Frequently Asked questions
We understand the real challenges of cross-platform SQL translation and solve them with
advanced
technology and deep semantic insight.
Still have questions?
Whether you need help evaluating Safe Boundary for your use case, have questions about deployment, or want to discuss pricing for your team - we're here to help.
Start protecting your database today
Free for 1 database. No credit card. No time limit.
Block, rewrite, mask, and log every query, from every actor.