spraay_batch_estimate
Estimate gas cost for a batch payment before executing. Returns estimated gas in wei and USD equivalent. Costs $0.001 USDC.
This record as markdown: /tools/io-github-plagtech-spraay-x402-mcp/spraay-batch-estimate.md
What spraay_batch_estimate does on Spraay X402 Mcp
AI agents call spraay_batch_estimate to retrieve information from Spraay X402 Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why spraay_batch_estimate is rated Low
This tool queries blockchain state to calculate gas prices but does not execute any transactions, modify data, or commit financial obligations. The small fee ($0.001 USDC) is a normal service charge for the query itself, not a financial movement tool. The primary function is information retrieval about potential costs, making it a Read category tool with low severity.
From the tool's definition Tool provides estimation/calculation of gas costs without executing transactions. Description states 'Estimate gas cost' and 'Returns estimated gas in wei and USD equivalent'—these are read-only operations that retrieve cost information without side effects.
Attacks that exploit this kind of access
The rule that runs spraay_batch_estimate safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Spraay X402 Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For spraay_batch_estimate, this is the rule to start with:
spraay_batch_estimate is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Spraay X402 Mcp, apply this rule, and every spraay_batch_estimate call is checked against it from then on.
Questions about spraay_batch_estimate
Estimate gas cost for a batch payment before executing. Returns estimated gas in wei and USD equivalent. Costs $0.001 USDC. It is categorised as a Read tool in the Spraay X402 Mcp MCP Server, which means it retrieves data without modifying state.
Register the Spraay X402 MCP server in PolicyLayer and add a rule for spraay_batch_estimate: 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 Spraay X402 Mcp. Nothing to install.
spraay_batch_estimate 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 spraay_batch_estimate 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 spraay_batch_estimate. 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.
spraay_batch_estimate is provided by the Spraay X402 MCP server (spraay-x402-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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