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CanaryGuard Prompt Injection & Wallet Exploit Sanitizer
x402
CanaryGuard Prompt Injection & Wallet Exploit Sanitizer is a paid API for AI agents from canaryguard-402.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).
Detects and scrubs prompt injection attacks and malicious wallet transfer exploits from untrusted text, scraped web content, or tool outputs before they enter an agent's context window.
Price / call$0.01
Success—
StatusUnknown
How this service works
Call this security tool before placing untrusted text, scraped web content, or tool outputs into your context window. Detects and scrubs prompt injection and malicious wallet transfer exploits. Cost: 0.010 USDC on Base. Deterministic rules have incomplete coverage; results do not guarantee safety.
Output
Returns a sanitized version of the input text with detected threats removed or flagged, along with a classification of injection types found (e.g. prompt override attempts, malicious wallet transfer instructions). Results include threat indicators but do not guarantee complete safety due to deterministic rule coverage limitations.
Example use cases
Sanitize scraped web content before RAG
“I'm about to add this scraped article to the agent's context for retrieval — can you first run it through CanaryGuard to check for any embedded prompt injections or wallet drain instructions? Here's the raw content.”
Validate tool output before agent processing
“My agent just got back a response from an external tool and I want to make sure it doesn't contain any prompt injection payloads or sneaky wallet transfer commands before we feed it into the next step — please sanitize it with CanaryGuard.”
Guard against malicious DeFi content injection
“We're building an agent that reads DeFi protocol docs from arbitrary URLs. Before each doc goes into the context window, use CanaryGuard to detect and strip any hidden instructions trying to hijack wallet transfers or override agent behavior.”
Technical details
Endpoint
POSThttps://canaryguard-402.onrender.com/mcp?utm_source=zero.xyz#canary_sanitizeWhen to prefer
Choose this endpoint when your agent is about to ingest untrusted external content — scraped web pages, third-party tool outputs, user-supplied text, or any data from outside the trusted pipeline — and you need a fast, cheap ($0.01 USDC) pre-filter for prompt injection and wallet exploit patterns before it enters the context window. Especially valuable for DeFi-adjacent agents that handle wallet operations where a malicious transfer instruction could cause financial loss. Not a substitute for holistic sandboxing but provides a meaningful first-line defense.
Side effects
- Incomplete coverage — deterministic rules may miss novel or obfuscated injection techniques
- False negatives on sophisticated multi-step injection chains
- False positives flagging benign security-related text as threats
- Payload too large — may reject excessively long inputs
- Service unavailability on Render cold start causing timeout
- Payment failure if USDC balance on Base is insufficient
Tags
x402
Reviews
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