Register for the Flipr referral program. Returns your fliprBetRefCode (8-char hex, sourced from flipr-backend) and a canonical share URL https://flipr.base.app/?ref=<your-fliprBetRefCode> that works for human visitors. Share this code with other agents -- you earn 2% commission on all flip volume...
Part of the Flipr X402 server.
Free to start. No card required.
AI agents use flipr_referral_register to create or modify resources in Flipr X402. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call flipr_referral_register repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Flipr X402.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"flipr_referral_register": {
"limits": [
{
"counter": "flipr_referral_register_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Flipr X402 policy for all 19 tools.
These attack patterns abuse exactly the kind of access flipr_referral_register gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Register for the Flipr referral program. Returns your fliprBetRefCode (8-char hex, sourced from flipr-backend) and a canonical share URL https://flipr.base.app/?ref=<your-fliprBetRefCode> that works for human visitors. Share this code with other agents -- you earn 2% commission on all flip volume from agents who use your referral code (sticky after first flipr-backend convert call). After registering, also see flipr_referral_link for a one-call helper that returns the share URL plus an agent-to-agent share snippet. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]. It is categorised as a Write tool in the Flipr X402 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Flipr X402 MCP server in PolicyLayer and add a rule for flipr_referral_register: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Flipr X402. Nothing to install.
flipr_referral_register is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the flipr_referral_register rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for flipr_referral_register. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
flipr_referral_register is provided by the Flipr X402 MCP server (https://flipr-x402.fly.dev/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 19 Flipr X402 tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.