Limit your first Cursor cloud-agent task to one verifiable fix

Handing Cursor a small, reproducible bug and waiting for it to return a PR for human review is a useful first way to try a background agent. A task suitable for delegation should meet three conditions at once: the expected behavior is clear, it can be verified in the remote environment, and one person responsible for the work can understand the scope of the changes. If any condition is missing, addressing it is more useful than adding more detail to the prompt.

Cursor currently calls this product Cloud Agents; it was previously called Background Agents. It works in an isolated cloud virtual machine rather than taking over your current local working directory. For repository tasks, it makes and hands over code changes on a separate branch. The following analysis of task selection is based on the official documentation; the example has not been run.

Suppose a project has a list endpoint: a valid empty query should return an empty array, but instead triggers an exception. The team has confirmed the correct behavior, and relevant tests exist. This is more suitable for delegation than “make search better,” because the agent can investigate the cause, change the implementation, and add a regression test around an observable result. The reviewer can also determine whether the fix is correct.

The same standard applies to adding tests for known edge cases, correcting documentation examples that do not match an existing interface, and removing duplication within a clearly defined scope. Refactoring, however, also needs existing tests to protect externally observable behavior. If tests are missing, first ask for an examination of callers and additional tests, rather than also requesting large-scale structural changes.

The fix above could be delegated with requirements like these:

• Reproduce the exception when the list endpoint handles a valid empty query. First add a regression test that fails against the old implementation.
• Fix the result for this input so that it returns a successful response and an empty array. Preserve the existing handling of invalid inputs, and do not change the endpoint parameters or response structure.
• Change only the relevant implementation and tests. Do not upgrade dependencies or change authorization, the database schema, or deployment configuration. If going beyond this scope is necessary, explain why and stop first.
• Run the relevant tests and the project's existing checks. Record the commands, results, and checks that could not be run. Return a draft PR explaining the root cause, changed files, verification evidence, and remaining risks. Do not merge it.

This is an example task for analysis, not a directly executable script claiming that these files or commands exist. For an actual delegation, you also need to supply the repository, baseline commit, actual input that reproduces the problem, and the project's test commands. At acceptance, confirm that the new test really covers the original bug rather than just looking for “tests passed.” If the agent removed assertions or changed a test to make the incorrect behavior the expected result, a green check still means nothing.

Cursor's environment documentation says that hosted cloud agents run on Ubuntu and can be configured either with guidance from the agent or using a Dockerfile. Tools already installed locally, uncommitted files, and connections to private services cannot therefore be assumed to exist remotely. Before queuing the fix, verify that dependencies can be installed, tests can start, and required services are reachable.

The repository, dependency repositories, and submodules need appropriate read and write permissions. If the task relies on components available only on a developer's computer, or tests must access an internal service for which access has not yet been authorized, address the environment and permissions first. Do not describe installation failures or network timeouts as verified code. You can narrow the task to delivering a root-cause analysis and suggested changes, or use a local interactive workflow that can access the required environment.

For the first task, it is best to choose a fix that requires neither production data nor production credentials, and to use sanitized examples or test doubles. If a trustworthy verification environment cannot be established, the task is not yet suitable for unattended work toward a merge-ready state.

Cursor's documentation says that Cloud Agents have internet access by default and automatically execute terminal commands. This lets them keep running tests, but they may also be affected by prompt injection after reading malicious content. A separate branch can isolate code changes, but it cannot recall data already sent outside the environment. Treating “someone will review the PR at the end” as the security boundary for execution is insufficient.

Before starting, restrict the external destinations the agent may access, and provide only the permissions and credentials the task needs. Cursor offers Runtime Secrets, which redact values in tool output, chat logs, and commits. However, those values remain available to programs as environment variables and are still visible to users interacting with the environment through the terminal. Output redaction does not mean that credentials cannot be used, nor does it replace limits on the scope of their permissions.

For that reason, production database migrations, changes to payment or authorization rules, and major changes that depend on unresolved product decisions are poor choices for a first unattended task. This is a task-selection recommendation based on the scope of the impact, not a claim that the product cannot modify this code. Have people establish the business constraints and risks first, then split the work into small changes that can be verified independently.

The official handoff workflow involves pushing a branch and opening a PR for human review; you can also request a draft. Teams should use this to clarify responsibilities: the agent supplies changes and evidence, while the person responsible decides whether the requirements have been met, whether the risks are acceptable, and whether to merge. Do not treat the agent's completion message as authorization to merge.

During review, first check that the diff remains within the original scope, then rerun key regression tests and the necessary integration checks. Inspect error-handling paths, callers, dependency changes, and whether logs expose data. Checks that could not be run should remain documented in the PR, with a clear owner for completing them. If the changes keep spreading, failing tests are repeatedly bypassed, or new business decisions are needed, return to an interactive discussion and break down the task again.

The value of a background agent depends on the quality of its handoff. Start with a small fix that can be reproduced without production permissions, has a clear result, and can be reviewed in full. Expand the scope of delegation only after both the environment and the review process have stood up to that first round.