This is for the crowded PR thread
The pull request has a human maintainer, CI checks, an AI reviewer, an autofix suggestion, maybe a second reviewer, and a stale-status comment because the branch moved while everyone was talking.
Some of those comments are useful. Some are noise. The maintainer still has to decide what is real, what is stale, what changed, what failed, and what needs a person.
A lane map gives that thread traffic rules. Each reviewer gets a job, a file boundary, an action boundary, and an owner. That is the operational next step after reading why AI code review bots need lanes and why BaristaLabs treats these artifacts as part of Responsible AI.
What the lane map decides
A lane map is not a list of installed tools. It is the operating agreement for one AI reviewer workflow, one AI pull request review workflow, or one class of automated code review policy.
It answers what this reviewer checks, what files it may read or change, when it may suggest a patch, when it must stop, how it marks stale work, who owns the comment thread, what goes into the final AI code review receipt, and who rolls back a bad fix.
Review lane: summary, security, quality, tests, documentation, dependency, CI, autofix, or human decision.
File boundary: allowed paths, approval-required paths, and blocked paths.
Action boundary: comment-only, patch suggestion, commit after approval, low-risk commit, or never automatic.
State rule: what happens when the branch moves, CI fails, permissions block a fix, or reviewers disagree.
Decision owner: the person or role that accepts, rejects, reruns, escalates, or merges.
Receipt: the final record of what was checked, changed, skipped, failed, and approved.
If the broader action boundary is still unclear, start with the approval policy worksheet. If the evidence trail is unclear, pair this with the agent receipt template.
Copy-paste worksheet
AI code-review lane map worksheet
Copy this for one repository, repo group, or pull request type. Fill it out before enabling a new AI reviewer, autofix permission, CI companion, or coding-agent review loop.
Repository / workflow
Name the repository, repo group, or PR type. Example: customer portal dependency updates or docs-only pull requests.
Human decision owner
Name the role that owns final merge, rerun, reject, escalation, and rollback decisions. Avoid human review without an owner.
Reviewer lane
Assign one lane to this reviewer: summary, security, quality, tests, documentation, dependency, CI, autofix, or final human decision support.
What this lane owns
State the specific checks this reviewer is responsible for. Example: secrets, auth, permissions, and customer-data handling.
What this lane does not own
State what it should not comment on so tools do not duplicate each other. Example: style comments, deployment policy, or final approval.
Allowed files / paths
List paths the reviewer may read, comment on, or suggest changes for. Keep the set narrow for the first rollout.
Approval-required files / paths
List paths that require a person before any patch or commit: application code, tests, dependencies, config, workflow files, deployment scripts, secrets handling, migrations, billing, auth, and customer-data paths.
Blocked files / paths
List files or systems the reviewer must not touch in this lane, including credentials, production secrets, generated vendor files, regulated data, or unrelated repositories.
Comment permission
Define whether the reviewer may post findings, summaries, risk notes, CI explanations, or only private/internal draft output.
Autofix permission
Define the highest allowed action: no autofix, attach patch only, open a separate commit after approval, commit low-risk fixes, or never touch certain paths.
Low-risk autofix examples
Name safe first actions if any: typo fixes, markdown formatting, generated docs, lint-only changes, or non-production cleanup.
Never-autofix examples
Name hard-stop categories: CI workflows, deployment scripts, auth, secrets, billing, migrations, production config, customer-data handling, legal, and compliance-sensitive files.
Branch / staleness behavior
Decide what happens if the branch changes mid-review or mid-fix: mark stale, pause, discard patch, attach stale suggestion, or require manual rerun.
CI / comment owner
Name who triages status comments, failing checks, bot noise, duplicate findings, and rerun requests.
Escalation rule
List conditions that send the PR to a senior reviewer, security owner, product owner, or release owner. Include reviewer disagreement, sensitive paths, missing tests, branch drift, permission failures, and unclear source evidence.
Receipt fields
Define the final PR receipt: tool/lane, commit range checked, files reviewed, findings accepted, findings ignored, fixes committed, fixes failed, stale results, unreviewed areas, human approver, and rollback link.
Rollback owner and path
Name who reverts a bad autofix, restores a workflow/config file, opens the corrective PR, notifies stakeholders, or disables the tool permission.
First-run review sample
Decide how many PRs stay under close review before permissions expand. Example: first 20 PRs, first 2 weeks, or all PRs touching sensitive paths.
Success signal
Define what proves this lane helped: fewer missed security/config issues, less duplicate review noise, faster triage, clearer receipts, safer autofix boundaries, or fewer stale comments.
Review date
Set the date to revisit permissions after seeing real pull request behavior.
| Field | What to write |
|---|---|
| Repository / workflow | Name the repository, repo group, or PR type. Example: customer portal dependency updates or docs-only pull requests. |
| Human decision owner | Name the role that owns final merge, rerun, reject, escalation, and rollback decisions. Avoid human review without an owner. |
| Reviewer lane | Assign one lane to this reviewer: summary, security, quality, tests, documentation, dependency, CI, autofix, or final human decision support. |
| What this lane owns | State the specific checks this reviewer is responsible for. Example: secrets, auth, permissions, and customer-data handling. |
| What this lane does not own | State what it should not comment on so tools do not duplicate each other. Example: style comments, deployment policy, or final approval. |
| Allowed files / paths | List paths the reviewer may read, comment on, or suggest changes for. Keep the set narrow for the first rollout. |
| Approval-required files / paths | List paths that require a person before any patch or commit: application code, tests, dependencies, config, workflow files, deployment scripts, secrets handling, migrations, billing, auth, and customer-data paths. |
| Blocked files / paths | List files or systems the reviewer must not touch in this lane, including credentials, production secrets, generated vendor files, regulated data, or unrelated repositories. |
| Comment permission | Define whether the reviewer may post findings, summaries, risk notes, CI explanations, or only private/internal draft output. |
| Autofix permission | Define the highest allowed action: no autofix, attach patch only, open a separate commit after approval, commit low-risk fixes, or never touch certain paths. |
| Low-risk autofix examples | Name safe first actions if any: typo fixes, markdown formatting, generated docs, lint-only changes, or non-production cleanup. |
| Never-autofix examples | Name hard-stop categories: CI workflows, deployment scripts, auth, secrets, billing, migrations, production config, customer-data handling, legal, and compliance-sensitive files. |
| Branch / staleness behavior | Decide what happens if the branch changes mid-review or mid-fix: mark stale, pause, discard patch, attach stale suggestion, or require manual rerun. |
| CI / comment owner | Name who triages status comments, failing checks, bot noise, duplicate findings, and rerun requests. |
| Escalation rule | List conditions that send the PR to a senior reviewer, security owner, product owner, or release owner. Include reviewer disagreement, sensitive paths, missing tests, branch drift, permission failures, and unclear source evidence. |
| Receipt fields | Define the final PR receipt: tool/lane, commit range checked, files reviewed, findings accepted, findings ignored, fixes committed, fixes failed, stale results, unreviewed areas, human approver, and rollback link. |
| Rollback owner and path | Name who reverts a bad autofix, restores a workflow/config file, opens the corrective PR, notifies stakeholders, or disables the tool permission. |
| First-run review sample | Decide how many PRs stay under close review before permissions expand. Example: first 20 PRs, first 2 weeks, or all PRs touching sensitive paths. |
| Success signal | Define what proves this lane helped: fewer missed security/config issues, less duplicate review noise, faster triage, clearer receipts, safer autofix boundaries, or fewer stale comments. |
| Review date | Set the date to revisit permissions after seeing real pull request behavior. |
If the full worksheet is too much, answer these seven questions
- What lane does this reviewer own?
- Which files may it read, comment on, or suggest patches for?
- Which files require human approval before any fix?
- What must it never autofix?
- What happens when the branch moves while it is reviewing or fixing?
- Who owns CI/comment triage and final merge decisions?
- What receipt proves what changed, failed, went stale, and still needed a person?
Example: dependency-update pull requests
Use this example to see the difference between a generic AI reviewer rule and a working repository boundary.
Repository / workflow
Customer portal dependency-update pull requests.
Human decision owner
Backend lead owns final merge, rerun, reject, and rollback decisions.
Reviewer lane
Dependency and security review.
What this lane owns
Dependency release notes, vulnerable packages, auth/session side effects, config changes, and missing tests around changed behavior.
What this lane does not own
Style comments, product behavior decisions, release timing, or final approval.
Allowed files / paths
package.json, lockfile, dependency changelog links, and test files related to updated packages.
Approval-required files / paths
Application code, CI workflows, deployment config, auth/session code, migrations, and production telemetry config.
Blocked files / paths
Secrets, billing config, production credentials, unrelated workspaces, and customer data exports.
Comment permission
May post findings and risk notes on the PR. Duplicate style comments should be suppressed.
Autofix permission
May attach patch suggestions for docs or lockfile cleanup. May not commit workflow, auth, migration, or deployment changes.
Branch / staleness behavior
If the branch changes during review, mark the result stale and require a manual rerun before findings are treated as current.
CI / comment owner
Backend lead triages bot comments and failing checks before assigning work.
Escalation rule
Escalate to security owner for auth, session, secret handling, dependency CVEs, or unclear source evidence. Escalate to release owner if workflow/deployment files are involved.
Receipt fields
Tool lane, commit range, packages checked, files reviewed, findings accepted/ignored, stale results, fixes committed, fixes blocked, human approver, rollback PR or revert link.
Rollback owner and path
Backend lead opens a revert PR or disables the dependency update, then records the rollback link in the receipt.
First-run review sample
Review the first 20 dependency PRs before allowing any automatic low-risk commits.
Success signal
Fewer missed dependency/config issues, less duplicate comment noise, and a usable receipt on every dependency PR.
| Field | Example |
|---|---|
| Repository / workflow | Customer portal dependency-update pull requests. |
| Human decision owner | Backend lead owns final merge, rerun, reject, and rollback decisions. |
| Reviewer lane | Dependency and security review. |
| What this lane owns | Dependency release notes, vulnerable packages, auth/session side effects, config changes, and missing tests around changed behavior. |
| What this lane does not own | Style comments, product behavior decisions, release timing, or final approval. |
| Allowed files / paths | package.json, lockfile, dependency changelog links, and test files related to updated packages. |
| Approval-required files / paths | Application code, CI workflows, deployment config, auth/session code, migrations, and production telemetry config. |
| Blocked files / paths | Secrets, billing config, production credentials, unrelated workspaces, and customer data exports. |
| Comment permission | May post findings and risk notes on the PR. Duplicate style comments should be suppressed. |
| Autofix permission | May attach patch suggestions for docs or lockfile cleanup. May not commit workflow, auth, migration, or deployment changes. |
| Branch / staleness behavior | If the branch changes during review, mark the result stale and require a manual rerun before findings are treated as current. |
| CI / comment owner | Backend lead triages bot comments and failing checks before assigning work. |
| Escalation rule | Escalate to security owner for auth, session, secret handling, dependency CVEs, or unclear source evidence. Escalate to release owner if workflow/deployment files are involved. |
| Receipt fields | Tool lane, commit range, packages checked, files reviewed, findings accepted/ignored, stale results, fixes committed, fixes blocked, human approver, rollback PR or revert link. |
| Rollback owner and path | Backend lead opens a revert PR or disables the dependency update, then records the rollback link in the receipt. |
| First-run review sample | Review the first 20 dependency PRs before allowing any automatic low-risk commits. |
| Success signal | Fewer missed dependency/config issues, less duplicate comment noise, and a usable receipt on every dependency PR. |
Pair the lane map with the approval policy and receipt
The lane map is the code-review-specific control. It should sit between the broader approval policy and the final receipt.
The approval policy says what an AI workflow may read, suggest, change, escalate, log, and roll back. The lane map translates that into repository rules. The receipt proves what each reviewer actually checked after a pull request runs through the process.
- Use the approval policy worksheet before expanding write permission.
- Use the agent receipt template to keep the final pull request record reconstructable.
- Read how agent receipts log customer work when the workflow reaches other systems.
- Review how GitHub Copilot app agents are moving into branches, checks, review comments, and merge conditions.
FAQ
What is an AI code-review lane map?
An AI code-review lane map is a short operating worksheet that says what each reviewer owns, which files it may touch, what it may autofix, what happens when the branch changes, who owns the final decision, and what receipt the PR should leave behind.
Is this only for CodeRabbit, Copilot, or Amazon Q Developer?
No. The worksheet is tool-agnostic. Use it for any automated reviewer, coding agent, CI companion, autofix tool, or bot that comments on pull requests or proposes changes.
Does every AI reviewer need a separate lane?
Every reviewer should have a clear job. Some teams may use one tool for several lanes, but the rule still helps: summary, security, quality, test coverage, CI, autofix, and human decision ownership should not blur together in the same comment pile.
Should AI reviewers be allowed to autofix code?
Not by default. Start with comment-only or patch-only behavior, then allow low-risk fixes only after the team has evidence. CI workflows, deployment scripts, auth, secrets, billing, migrations, production config, and customer-data handling should require human approval by default.
What happens if the branch changes during review?
The lane map should define the default behavior before launch. For most teams, stale results should be marked stale, paused, discarded, or rerun manually instead of posted as if they still apply to the latest commit.
How does this relate to agent receipts?
The lane map defines the review rules before the PR runs. The receipt records what happened after the review: what each tool checked, which commit range it reviewed, what changed, what failed, what went stale, what remained unreviewed, who approved, and how to roll back.
Bring the lane map to a 20-minute workflow review
If your team is adding an AI reviewer, autofix tool, CI companion, or coding agent, fill out the lane map before expanding permissions. BaristaLabs can help pressure-test which reviewer owns which lane, which files stay manual, when a branch-stale result is ignored, what the final receipt records, and who owns rollback.
Best fit for teams adding AI reviewers, autofix tools, coding agents, or CI companions to repositories that already have human review.