Create a new inter-agent contract in draft status. Requires exactly 2 parties (one principal, one executor). Conditions can include budget_cap, time_limit, approval_gate, or custom.
Risk signalsHigh parameter count (16 properties)
Part of the AgentBond server.
Free to start. No card required.
AI agents use agentbond_create_contract to create or modify resources in AgentBond. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call agentbond_create_contract repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach AgentBond.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"agentbond_create_contract": {
"limits": [
{
"counter": "agentbond_create_contract_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full AgentBond policy for all 17 tools.
These attack patterns abuse exactly the kind of access agentbond_create_contract gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Create a new inter-agent contract in draft status. Requires exactly 2 parties (one principal, one executor). Conditions can include budget_cap, time_limit, approval_gate, or custom.. It is categorised as a Write tool in the AgentBond MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the AgentBond MCP server in PolicyLayer and add a rule for agentbond_create_contract: 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 AgentBond. Nothing to install.
agentbond_create_contract is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the agentbond_create_contract 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 agentbond_create_contract. 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.
agentbond_create_contract is provided by the AgentBond MCP server (agentbond/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 17 AgentBond tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.