Prepare a SuperBlock purchase reservation. Requires API key with purchase:prepare scope. Flags off: returns the legacy non-executing purchaseIntent with contract address, USDC amount, chain ID, and purchase ID. ADA-36 flags on: also returns an HTTP 402 payment-required envelope for x402-compatibl...
Part of the PoolParty Main Stage Airtime server.
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AI agents call prepare_superblock_purchase to retrieve information from PoolParty Main Stage Airtime without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though prepare_superblock_purchase only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"prepare_superblock_purchase": {}
}
}See the full PoolParty Main Stage Airtime policy for all 71 tools.
These attack patterns abuse exactly the kind of access prepare_superblock_purchase gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Prepare a SuperBlock purchase reservation. Requires API key with purchase:prepare scope. Flags off: returns the legacy non-executing purchaseIntent with contract address, USDC amount, chain ID, and purchase ID. ADA-36 flags on: also returns an HTTP 402 payment-required envelope for x402-compatible payment negotiation, paidAction intentId, settle endpoint, and receipt endpoint. Settlement requires a direct SuperblockPurchaseRouter.purchase(...) transaction followed by canonical PoolParty receipt verification. This tool does not sign or broadcast a transaction. Reservations expire in 15 minutes.. It is categorised as a Read tool in the PoolParty Main Stage Airtime MCP Server, which means it retrieves data without modifying state.
Register the PoolParty Main Stage Airtime MCP server in PolicyLayer and add a rule for prepare_superblock_purchase: 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 PoolParty Main Stage Airtime. Nothing to install.
prepare_superblock_purchase is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the prepare_superblock_purchase 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 prepare_superblock_purchase. 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.
prepare_superblock_purchase is provided by the PoolParty Main Stage Airtime MCP server (https://www.poolparty.io/api/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 71 PoolParty Main Stage Airtime tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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