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Build guide

How to Build a CI Failure Fix Agent

By The Learn Cursor Editorial TeamUpdated

Build a CI failure fix agent by passing the failing job, logs, changed files and allowed commands into a narrow repair loop. The agent should explain the suspected cause, propose a patch and rerun the failed check before handoff.

Cover image for How to Build a CI Failure Fix Agent

How do you build CI failure fix agent?

  1. 1Define the trigger: issue, PR, failed CI job, docs change or support ticket.
  2. 2Limit tool access to the files and systems the agent needs.
  3. 3Add a plan step before writes.
  4. 4Run checks and produce a short reviewer handoff.
  5. 5Log the prompt, changed files, commands and result.
Minimal agent job shape
type AgentJob = {
  task: string;
  context: string[];
  allowedTools: string[];
  checks: string[];
  handoff: "diff" | "comment" | "pull_request";
};
Build path

Interactive diagram. Use Tab to move through hotspots or use the step controls when shown.

TriggerContextToolsPatchHandoff▲ GATE
1/5
Trigger: Start from a PR, issue or CI failure.
Agent run trace

Interactive diagram. Use Tab to move through hotspots or use the step controls when shown.

A useful build keeps trigger, context, tools, patch and handoff visible.

What can go wrong?

Too much scope

The agent touches files outside the task.

Weak checks

The handoff says done without test or review proof.

Tool risk

The agent gets broad access when narrow access would work.

Frequently asked questions

Who is How to Build a CI Failure Fix Agent for?

Platform teams and AI engineers automating repeated CI failures.

What makes this page credible?

The tutorial shows trigger, log context, patch boundary and verification.

What should I do next?

Start with one real repo task, capture the prompt and review the result before scaling the workflow.

Sources & last verified

Cursor ships frequently. Facts verified against primary sources on June 23, 2026.

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