Submit payment proof after sending stablecoins to a FactorGuide wallet address. For x402: provide tx_hash and chain. For MPP: use in-band Authorization header instead — no separate submission needed.
Part of the FactorGuide server.
Free to start. No card required.
AI agents use factorguide_submit_payment to create or modify resources in FactorGuide. 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 factorguide_submit_payment 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 FactorGuide.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"factorguide_submit_payment": {
"limits": [
{
"counter": "factorguide_submit_payment_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full FactorGuide policy for all 7 tools.
These attack patterns abuse exactly the kind of access factorguide_submit_payment 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.
Submit payment proof after sending stablecoins to a FactorGuide wallet address. For x402: provide tx_hash and chain. For MPP: use in-band Authorization header instead — no separate submission needed.. It is categorised as a Write tool in the FactorGuide MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the FactorGuide MCP server in PolicyLayer and add a rule for factorguide_submit_payment: 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 FactorGuide. Nothing to install.
factorguide_submit_payment 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 factorguide_submit_payment 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 factorguide_submit_payment. 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.
factorguide_submit_payment is provided by the FactorGuide MCP server (https://factorguide.io/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 FactorGuide tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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4,600+ MCP servers and 31,000+ tools scanned and risk-classified.