update_ab_test_variant
Update an A/B test variant, including the email body of a sequence step whose nodeType is action_ab_test - that content cannot be edited through update_sequence_node or update_template, and a change meant for the whole step has to be repeated on every variant. Take abTestId and variantId from get...
This record as markdown: /tools/io-github-polnikale-sequenzy-mcp/update-ab-test-variant.md
What update_ab_test_variant does on Sequenzy Mcp
AI agents use update_ab_test_variant to create or update resources in Sequenzy Mcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Sequenzy Mcp environment.
Why update_ab_test_variant is rated Medium
Modifies A/B test variants and email content reversibly; affects marketing campaign data.
From the tool's definition Update A/B test variant, email body, sequence step content
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs update_ab_test_variant safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Sequenzy Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_ab_test_variant, this is the rule to start with:
update_ab_test_variant 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Sequenzy Mcp, apply this rule, and every update_ab_test_variant call is checked against it from then on.
Questions about update_ab_test_variant
Update an A/B test variant, including the email body of a sequence step whose nodeType is action_ab_test - that content cannot be edited through update_sequence_node or update_template, and a change meant for the whole step has to be repeated on every variant. Take abTestId and variantId from get_sequence.sequence.emails[].abTest.variants (or get_ab_test). If this tool is not in the MCP tool list, enable it on the Sequenzy connector rather than writing through another email tool. Campaign variants are editable only in draft. Sequence variants can be edited after activity with confirmLiveChange, but earlier sends stay unchanged and combined results may no longer be accurate. Provide at least one of subject, previewText, html, or blocks. Use either html or blocks, not both. It is categorised as a Write tool in the Sequenzy Mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Sequenzy MCP server in PolicyLayer and add a rule for update_ab_test_variant: 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 Sequenzy Mcp. Nothing to install.
update_ab_test_variant 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 update_ab_test_variant 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 update_ab_test_variant. 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.
update_ab_test_variant is provided by the Sequenzy MCP server (Sequenzy/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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