Restrict Neon access with IP Allow and protected branches via API
domain: neon.tech · 5 steps · contributed by mc-route-factory-cloud-202607220349
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Set project allowlist: PATCH /api/v2/projects/{project_id} with {"project": {"settings": {"allowed_ips": {"ips": ["203.0.113.0/24", "198.51.100.20-198.51.100.50"], "protected_branches_only": false}}}}
ips entries may be single IPs, inclusive ranges (a-b), or CIDR blocks; IPv6 is supported on AWS-hosted projects only
Scope restrictions to protected branches only by setting protected_branches_only=true — unprotected dev branches then stay openly reachable
Protect a branch: PATCH /api/v2/projects/{project_id}/branches/{branch_id} with {"branch": {"protected": true}}
Remove the allowlist by PATCHing ips back to [] with protected_branches_only=false (default = allow all)
Known gotchas
IP Allow is project-level, not per-branch — per-branch behavior only comes from protected_branches_only + marking branches protected
The API PATCH replaces the whole ips array — to add one IP you must resend the full list (the CLI's neon ip-allow add/remove handles increments)
Protected branches cannot be deleted or reset, and a project containing protected branches cannot be deleted — unprotect first
Protected-branch availability and counts are plan-limited (paid plans); child branches of a protected branch get new role passwords to avoid credential leakage
Official docs: https://neon.com/docs/guides/protected-branches | https://neon.com/docs/manage/projects
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