34 tools. 8 can modify or destroy data without limits.
3 destructive tools with no built-in limits. Policy required.
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Financial operations (transfer_agent) can move real money. An agent caught in a loop could drain accounts before anyone notices.
Destructive tools (a2a_cancel_task, revoke_feedback) permanently delete resources. There is no undo. An agent calling these in a retry loop causes irreversible damage.
Write operations (a2a_send_message, a2a_task_message, configure_wallet) modify state. Without rate limits, an agent can make hundreds of changes in seconds — faster than any human can review or revert.
Intercept sits between your agent and Agent0. 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 @rickydata/agent0-mcp transfer_agent:
rules:
- action: deny Financial tools should be explicitly enabled per use case, not open by default.
a2a_cancel_task:
rules:
- action: deny Destructive tools should never be available to autonomous agents without human approval.
a2a_send_message:
rules:
- rate_limit: 30/hour Prevents bulk unintended modifications from agents caught in loops.
a2a_get_task:
rules:
- rate_limit: 60/minute Controls API costs and prevents retry loops from exhausting upstream rate limits.
Yes. The Agent0 server exposes 1 financial tools including transfer_agent. 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.
Yes. The Agent0 server exposes 2 destructive tools including a2a_cancel_task, revoke_feedback. These permanently remove resources with no undo. Intercept blocks destructive tools by default so they never reach the upstream server.
The Agent0 server has 5 write tools including a2a_send_message, a2a_task_message, configure_wallet. 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.
34 tools across 4 categories: Destructive, Financial, Read, Write. 26 are read-only. 8 can modify, create, or delete data.
One line change. Instead of running the Agent0 server directly, prefix it with Intercept: intercept -c agent0.yaml -- npx -y @@rickydata/agent0-mcp. Download a pre-built policy from policylayer.com/policies/agent0 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