Decode raw calldata into function name and typed arguments using a provided ABI on Mezo. Pure computation — no RPC call needed. Pass the hex calldata from a transaction input or eth_call.
Part of the Boar blockchain MCP (advanced) server.
Free to start. No card required.
AI agents invoke mezo_decode_calldata to trigger processes or run actions in Boar blockchain MCP (advanced). 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.
mezo_decode_calldata 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": {
"mezo_decode_calldata": {
"limits": [
{
"counter": "mezo_decode_calldata_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full Boar blockchain MCP (advanced) policy for all 13 tools.
These attack patterns abuse exactly the kind of access mezo_decode_calldata 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.
Decode raw calldata into function name and typed arguments using a provided ABI on Mezo. Pure computation — no RPC call needed. Pass the hex calldata from a transaction input or eth_call.. It is categorised as a Execute tool in the Boar blockchain MCP (advanced) MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Boar blockchain MCP (advanced) MCP server in PolicyLayer and add a rule for mezo_decode_calldata: 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 Boar blockchain MCP (advanced). Nothing to install.
mezo_decode_calldata 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 mezo_decode_calldata 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 mezo_decode_calldata. 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.
mezo_decode_calldata is provided by the Boar blockchain MCP (advanced) MCP server (boar-network/blockchain-advanced). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 13 Boar blockchain MCP (advanced) tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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