Developer-first security tool blocks AI manipulation attacks in under 100 milliseconds with a single API call — now available with free tier and self-serve pricing starting at $5/month
SAN FRANCISCO, February 20, 2026 — SafePrompt, an AI security company, today announced the general availability of its prompt injection protection API. The platform enables developers to shield AI-powered applications from manipulation attacks, data extraction, and jailbreaks with one line of code and no complex configuration. SafePrompt is available immediately at safeprompt.dev with a free tier and paid plans starting at $5 per month.
Prompt injection has emerged as the most critical security threat facing AI applications. The attack works by embedding hidden instructions inside user input, causing an AI system to override its programming — leaking confidential data, performing unauthorized actions, or producing harmful output. The risk scales with every new AI deployment: customer service chatbots, internal knowledge assistants, AI-powered workflows, and automated agents are all vulnerable.
The consequences are not theoretical. In December 2023, a Chevrolet dealership chatbot was manipulated through prompt injection into agreeing to sell a 2024 Tahoe for one dollar. The incident, widely covered in national media, demonstrated that a single unprotected prompt can cause direct financial and reputational damage. As organizations move AI from experimental projects into core business operations, the attack surface continues to expand.
SafePrompt operates as a validation layer between user input and the AI model. Developers add a single API call before passing a prompt to their language model. SafePrompt analyzes the input through a multi-layer defense pipeline and returns a safe or unsafe verdict, typically in under 100 milliseconds.
The pipeline combines three complementary approaches. The first layer performs instant pattern detection, catching known attack signatures — including code injection (XSS and SQL), command injection, and template exploitation — at zero latency. The second layer identifies external reference attacks such as embedded URLs, IP addresses, and file paths designed to exfiltrate data. The third layer uses AI-powered semantic analysis to detect novel and obfuscated attacks that evade rule-based systems, including instruction overrides, role impersonation, jailbreak variants, and social engineering.
SafePrompt also provides multi-turn attack detection, a capability that tracks conversation context across multiple messages. Sophisticated attackers often spread an attack across several exchanges — establishing trust, priming context, then escalating to an exploit. SafePrompt's session-based validation identifies these patterns, including reconnaissance sequences, gradual privilege escalation, and RAG poisoning attempts.
"We built SafePrompt because every developer shipping AI features faces the same problem — prompt injection — and the existing options were either expensive enterprise platforms requiring sales calls or fragile regex filters that miss most real-world attacks. Our goal was to make prompt security as simple as Stripe made payments: one API call, transparent pricing, and no gatekeeping."
— Ian Ho, Founder, SafePrompt
SafePrompt includes a collective threat intelligence system. When one application blocks a previously unseen attack pattern, the system extracts an anonymized signature and distributes it across the network. Every SafePrompt-protected application benefits from the combined attack data of the entire user base, creating a defense that strengthens as adoption grows.
The intelligence pipeline includes automated pattern discovery that identifies emerging attack techniques from real traffic, and campaign detection that clusters coordinated attacks targeting multiple applications. All personally identifiable data is anonymized within 24 hours, and only cryptographic hashes of attack patterns are retained long-term. The system is fully compliant with GDPR and CCPA requirements. Paid-tier users may opt out of data contribution, though doing so removes access to network intelligence benefits.
SafePrompt is available now with self-serve signup at safeprompt.dev. The platform is designed for developers who want immediate access without procurement processes or sales calls.
All tiers use the same core detection technology. The HTTP API supports integration from any programming language or framework with a single API call. Developers can also test the system through an interactive attack playground on the SafePrompt website, which demonstrates detection across 20 real-world attack categories.
"The risk of prompt injection grows every time a company connects a language model to real business logic — customer data, financial transactions, internal tools. Most developers know they need protection but don't have the security expertise to build it themselves. That's the gap we're filling: production-grade AI security that takes five minutes to integrate, not five months."
— Ian Ho, Founder, SafePrompt
Prompt injection is an attack where malicious instructions are hidden inside user input sent to an AI system. The AI interprets these instructions as legitimate commands, causing it to leak confidential data, bypass safety rules, or perform unauthorized actions. It is considered the top security risk for AI applications by OWASP.
SafePrompt validates every user prompt through a multi-layer pipeline before it reaches the AI model. The system combines instant pattern detection for known attacks, external reference blocking, and AI-powered semantic analysis for novel threats. Developers integrate it with a single API call that returns a safe or unsafe verdict in under 100 milliseconds.
SafePrompt detects prompt injection, jailbreak attempts, instruction overrides, code injection (XSS and SQL), data extraction, external reference attacks, multi-turn manipulation chains, role impersonation, social engineering sequences, RAG poisoning, and encoding-based obfuscation techniques targeting AI systems.
SafePrompt offers a free tier with 1,000 validations per month. Paid plans start at $5 per month during beta (10,000 validations), with Business at $99 per month for up to 250,000 validations. All tiers use the same core detection technology with no feature gating on security accuracy.
SafePrompt is an AI security company that protects applications from prompt injection attacks. Founded in 2025 and headquartered in San Francisco, SafePrompt provides a developer-first API that detects and blocks AI manipulation attempts in real time using a multi-layer validation pipeline. The platform serves developers and engineering teams building AI-powered products, from early-stage projects to production systems handling enterprise workloads. Learn more at safeprompt.dev.