SolonGate
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What is SolonGate?
SolonGate is an enterprise-grade security gateway that sits between AI agents and the tools they use, providing infrastructure-level security for autonomous agents. It acts as a zero-trust proxy that intercepts, validates, and logs every AI tool call before it reaches your infrastructure, enforcing deterministic policies in milliseconds. The tool is built specifically for air-gapped and mission-critical environments where data sovereignty is non-negotiable.
Key features include a five-step protection pipeline: Schema Validation, Policy Check, Input Guard with nine threat detectors, Tool Execution, and Output Guard. SolonGate detects and blocks prompt injection attacks (both input and output scanning), enforces granular role- and scope-based policies, performs JSON schema validation, redacts secrets and PII in outputs, and provides tamper-evident audit trails with real-time monitoring. It supports per-tool rate limiting and works as a drop-in proxy with zero code changes required.
SolonGate is designed for software developers securing AI code generation, academic researchers protecting sensitive data, solopreneurs automating tasks securely, content creators preventing AI misuse, and enterprise teams deploying autonomous agents in production. It兼容s every AI tool platform using MCP (Model Context Protocol), including Claude Code, Gemini CLI, OpenClaw, and Claude's coding agent.
The tool prevents a comprehensive range of attacks including prompt injection, path traversal, shell injection, SSRF, SQL injection, data exfiltration, wildcard abuse, command injection, and over-permissioning. It operates at the MCP/tool-call layer rather than treating requests as opaque HTTP, parsing the actual tool call and evaluating policy against the real arguments.
SolonGate pricing
Pricing model: Freemium
SolonGate offers a Freemium pricing model. The free tier includes 500 tool audits per month and one policy, suitable for solo developers exploring AI tool security. The Pro plan costs $20/month and provides 5,000 tool audits per month with unlimited policies. For organizations needing unlimited scale, dedicated support, air-gapped deployments, and custom integrations, custom Enterprise plans are available with pricing negotiated based on requirements.
SolonGate pros
- Blocks tool calls before they execute at the execution layer
- Deterministic policy enforcement on actual tool arguments
- Zero-trust security model—no request trusted by default
- Nine threat detectors in the input guard layer
- Real-time prompt injection detection for input and output
- Tamper-evident audit logs streamed instantly
- Full tool-call audit trail with decision, reason, and latency
- Air-gapped and on-premise deployment options available
- No code changes required—drop-in proxy architecture
- Per-tool rate limiting to prevent abuse
- Secret and PII redaction in output guards
- JSON schema validation for tool arguments
- Role-based and scope-based policy enforcement
- Compatible with all MCP-based AI tools (Claude Code, Gemini CLI, OpenClaw)
- Solon AI feature auto-suggests security policies from usage patterns
SolonGate cons
- Configuration may require technical expertise
- Cost increases with heavy tool audit usage
- Proxy layer introduces minimal latency
- Primarily focused on MCP protocol tool calls
- Not a replacement for traditional API gateways
- May require learning the OPA-WASM policy engine
- Enterprise pricing is custom-negotiated
- Limited public documentation for beginners
Frequently asked questions about SolonGate
Is SolonGate free?
SolonGate offers a free tier that includes 500 tool audits per month and one policy. This tier is suitable for solo developers exploring AI tool security. For more extensive usage, there is a Pro plan at $20/month with 5,000 audits and unlimited policies, plus custom Enterprise plans.
How much does SolonGate cost?
SolonGate has a free tier with 500 tool audits/month and one policy. The Pro plan is $20/month offering 5,000 tool audits and unlimited policies. Enterprise plans are custom-priced for organizations needing unlimited scale, dedicated support, air-gapped deployments, and custom integrations.
What platforms does SolonGate support?
SolonGate supports AI platforms that use MCP (Model Context Protocol) tool calls, including Claude Code, Gemini CLI, OpenClaw, and Claude's coding agent. It functions as a protocol-level proxy and is not vendor-specific, working with any tool server that implements MCP.
How do I install SolonGate?
SolonGate works as a drop-in security proxy with zero code changes. You can install it using a single command: npx @solongate/proxy -- your-server. This points your AI client to SolonGate instead of the real server. No configuration PhD or multi-step setup guide is required.
What attacks does SolonGate prevent?
SolonGate prevents prompt injection, path traversal, shell injection, SSRF (Server-Side Request Forgery), SQL injection, data exfiltration, wildcard abuse, command injection, and over-permissioning. The input guard runs nine threat detectors on the actual payload before execution.
Is SolonGate secure?
Yes, SolonGate provides a zero-trust security layer between AI agents and their tools. It enforces deterministic policy, validates inputs with nine threat detectors, guards against prompt injection, prevents over-permissioning, and blocks data leakage through a five-step protection pipeline. It runs fully on-premise with zero outbound dependencies for air-gapped deployments.
What is Solon AI?
Solon AI is a feature within SolonGate that analyzes your tool usage patterns. It automatically suggests security policies tailored to your workflow, helping you build better policies faster without manual configuration.
Is SolonGate a replacement for my API gateway?
No, SolonGate is not a replacement for your API gateway. Traditional API gateways handle north-south HTTP edge traffic, authentication, and rate limiting. SolonGate is a complementary layer that secures east-west tool calls your AI agents make at the MCP/tool-call layer, which API gateways cannot understand or reason about.
How is SolonGate different from LLM guardrails?
LLM guardrails filter text input/output to discourage unsafe responses but operate on language and are bypassable through rephrasing or encoding. SolonGate intercepts actual tool-call payloads at the execution layer and blocks unauthorized actions deterministically, regardless of what the prompt said. The security boundary is the action, not the sentence.
Can SolonGate work in air-gapped environments?
Yes, SolonGate supports air-gapped and on-premise deployment options where data sovereignty is non-negotiable. It runs fully on-premise with zero outbound dependencies, making it suitable for mission-critical environments that cannot egress data to external services.