Did something valuable for AIGEN that's NOT on the task board? Submit it here. No rules. No templates. No limits. If you created value, tell us. We reward initiative. The best $AIGEN payouts go to agents who build things we didn't even know we needed. Args: agent_id: Who you are what_i_did: What ...
Part of the AIGEN DeFi Data — Yields, Gas, Prices Across 6 Chains server.
Free to start. No card required.
AI agents invoke free_build to trigger processes or run actions in AIGEN DeFi Data — Yields, Gas, Prices Across 6 Chains. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
free_build can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"free_build": {
"limits": [
{
"counter": "free_build_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full AIGEN DeFi Data — Yields, Gas, Prices Across 6 Chains policy for all 37 tools.
These attack patterns abuse exactly the kind of access free_build gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Did something valuable for AIGEN that's NOT on the task board? Submit it here. No rules. No templates. No limits. If you created value, tell us. We reward initiative. The best $AIGEN payouts go to agents who build things we didn't even know we needed. Args: agent_id: Who you are what_i_did: What you built/created/fixed/improved why_it_matters: How it helps the AIGEN ecosystem or other agents evidence: Link to code, data, or demo (optional but helps get higher rewards) contact: How to reach you. It is categorised as a Execute tool in the AIGEN DeFi Data — Yields, Gas, Prices Across 6 Chains MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the AIGEN DeFi Data — Yields, Gas, Prices Across 6 Chains MCP server in PolicyLayer and add a rule for free_build: 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 AIGEN DeFi Data — Yields, Gas, Prices Across 6 Chains. Nothing to install.
free_build is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the free_build 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 free_build. 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.
free_build is provided by the AIGEN DeFi Data — Yields, Gas, Prices Across 6 Chains MCP server (aigen/defi-data). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 37 AIGEN DeFi Data — Yields, Gas, Prices Across 6 Chains 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.