16 tools. 10 can modify or destroy data without limits.
2 destructive tools with no built-in limits. Policy required.
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Financial operations (transfer_apt, transfer_coin) can move real money. An agent caught in a loop could drain accounts before anyone notices.
Write operations (create_account, create_managed_coin, fund_account) modify state. Without rate limits, an agent can make hundreds of changes in seconds — faster than any human can review or revert.
Execute tools (deploy_coin, deploy_fungible_asset, deploy_token_factory) trigger processes with side effects. Builds, notifications, workflows — all fired without throttling.
Intercept sits between your agent and Aptos Blockchain Server. Every tool call checked against your policy before it executes — so your agent can do its job without breaking things.
npx -y @policylayer/intercept scan -- npx -y @cuongpo/aptos-mcp transfer_apt:
rules:
- action: deny Financial tools should be explicitly enabled per use case, not open by default.
create_account:
rules:
- rate_limit: 30/hour Prevents bulk unintended modifications from agents caught in loops.
get_account_info:
rules:
- rate_limit: 60/minute Controls API costs and prevents retry loops from exhausting upstream rate limits.
Yes. The Aptos Blockchain Server server exposes 2 financial tools including transfer_apt, transfer_coin. Without a policy, an autonomous agent can call these with no spend caps, no rate limits, and no approval flow. Intercept lets you block financial tools by default or set per-tool rate limits.
The Aptos Blockchain Server server has 4 write tools including create_account, create_managed_coin, fund_account. Set rate limits in your policy file -- for example, rate_limit: 10/hour prevents an agent from making more than 10 modifications per hour. Intercept enforces this at the transport layer.
16 tools across 4 categories: Execute, Financial, Read, Write. 6 are read-only. 10 can modify, create, or delete data.
One line change. Instead of running the Aptos Blockchain Server server directly, prefix it with Intercept: intercept -c cuongpo-aptos-mcp.yaml -- npx -y @cuongpo/aptos-mcp. Download a pre-built policy from policylayer.com/policies/cuongpo-aptos-mcp and adjust the limits to match your use case.
Starter policies available for each. Same risk classification, same one-command setup.
Set budgets, approvals, and hard limits across MCP servers.
npx -y @policylayer/intercept init