PUT /apps/{appId}/recordings/{testSetId}/mocks/{mockId} — Replace one mock's stored data — Updates the mock identified by {mockId} in the path. The body carries the full replacement. Two shapes — pick ONE: - mock_yaml (PREFERRED) — canonical mock YAML envelope. See createMock for the field-loss r...
Part of the Keploy server.
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AI agents use updateMock to create or modify resources in Keploy. 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 updateMock 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 Keploy.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"updateMock": {
"limits": [
{
"counter": "updatemock_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Keploy policy for all 103 tools.
These attack patterns abuse exactly the kind of access updateMock 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.
PUT /apps/{appId}/recordings/{testSetId}/mocks/{mockId} — Replace one mock's stored data — Updates the mock identified by {mockId} in the path. The body carries the full replacement. Two shapes — pick ONE: - mock_yaml (PREFERRED) — canonical mock YAML envelope. See createMock for the field-loss rationale. - mock — typed OSS Mock JSON. Brittle for lowercase keys. When both are sent, mock_yaml wins. Branch-aware via the optional branch_id body field — same semantics as createMock. Accepts both the mock's UUID _id and its human-readable Name as mockId — the server resolves names within the test set, so UI callers (which don't have access to the mock's _id) can pass the Name directly. Requires scope: write.. It is categorised as a Write tool in the Keploy MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Keploy MCP server in PolicyLayer and add a rule for updateMock: 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 Keploy. Nothing to install.
updateMock 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 updateMock 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 updateMock. 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.
updateMock is provided by the Keploy MCP server (https://api.keploy.io/client/v1/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 103 Keploy tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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