Create a fulfillment for an order, optionally specifying line items and tracking info. Side effect: creates a Fulfillment record and marks specified line_items as fulfilled.
AI agents use create_fulfillment to create or update resources in Sapo — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Sapo environment.
The tool creates and modifies fulfillment records within the e-commerce system (marking items as fulfilled), which represents reversible data changes typical of Write operations. While it updates order state, it does not delete data, execute arbitrary code, move financial assets, or perform irreversible destructive actions.
From the tool's definition Creates a Fulfillment record and marks specified line_items as fulfilled, explicitly stating it has side effects that modify order data
Documented attack patterns abuse exactly the kind of access create_fulfillment gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Sapo, and nothing reaches the server without passing your rules. This is the rule we recommend for create_fulfillment:
{
"version": "1",
"default": "deny",
"tools": {
"create_fulfillment": {
"limits": [
{
"counter": "create_fulfillment_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_fulfillment stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Create a fulfillment for an order, optionally specifying line items and tracking info. Side effect: creates a Fulfillment record and marks specified line_items as fulfilled. It is categorised as a Write tool in the Sapo MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Sapo MCP server in PolicyLayer and add a rule for create_fulfillment: 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 Sapo. Nothing to install.
create_fulfillment 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 create_fulfillment 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 create_fulfillment. 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.
create_fulfillment is provided by the Sapo MCP server (nguyennguyenit/sapo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Sapo, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
93 Sapo tools catalogued and risk-classified — across an index of 43,000+ MCP servers.