---
title: "backend GA; @neon/sdk 5.0.0 and later take named parameters (breaking): 2026-09-18 | Harbyn"
description: "backend GA; @neon/sdk 5.0.0 and later take named parameters (breaking), announced Sep 18, 2026."
canonical: "https://harbyn.com/changes/neon/2026-09-18-neon-sdk-5-takes-named-parameters"
last-updated: 2026-10-03
---

# backend GA; @neon/sdk 5.0.0 and later take named parameters (breaking)

Markdown version of <https://harbyn.com/changes/neon/2026-09-18-neon-sdk-5-takes-named-parameters>.

Breaking change - Neon. medium severity. In effect.

Since @neon/sdk 5.0.0, resource methods take a single named-parameter object, e.g. neon.branches.get({ projectId, branchId }), instead of positional arguments; code written for 4.x breaks when upgraded. Neon announced it with the SDK at v6, together with the Neon backend becoming generally available and the neon.ts preview block being deprecated in favor of top-level aiGateway, functions and buckets keys.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [Neon](https://harbyn.com/vendors/neon.md) |
| Kind | Breaking change |
| Severity | medium |
| Status | In effect |
| Announced | Sep 18, 2026 |
| Added to Harbyn | Oct 3, 2026 |
| Lead time | No dated deadline |
| Packages | `npm: @neon/sdk <5.0.0` |
| Vendor page | <https://neon.com/docs/changelog/2026-09-18> |
| Review | Reviewed by a person, extracted by a deterministic parser |

## Find it in your code

```sh
npx harbyn scan
```

The scanner reads your repository on your machine and reports every file and line that uses the identifiers above. Nothing leaves your machine.

## Sources

Where this event comes from: the page we read, when we read it, and the hash of that snapshot.

- <https://neon.com/docs/changelog/rss.xml> (changelog, fetched 2026-09-29 02:31 UTC, sha256 `ebb1a1c7244dcc690315877d1e58c0e49066720145064dcdab9437fd3bb3bc9a`)

## Related changes

### More from Neon

- [@neon/sdk 6.0.0 returns a Trigger union from neon.triggers and drops source\_branch\_id](https://harbyn.com/changes/neon/2026-09-16-neon-sdk-6-0-0.md) (Breaking change, announced Sep 16, 2026)
- [@neon/sdk 4.0.0 drops signal from the client wait option and rejects a missing apiKey](https://harbyn.com/changes/neon/2026-09-09-neon-sdk-4-0-0.md) (Breaking change, announced Sep 9, 2026)
- [@neon/sdk 3.2.0 paginated lists return bare items when throwOnError is true](https://harbyn.com/changes/neon/2026-09-08-neon-sdk-3-2-0-paginated-lists-honour-throwonerror.md) (Breaking change, announced Sep 8, 2026)
- [@neon/sdk 7.0.0 removes snapshot slugs](https://harbyn.com/changes/neon/2026-09-29-neon-sdk-7-0-0.md) (Breaking change, announced Sep 29, 2026)

### Changes at other vendors

- [Amazon Selling Partner API: October listing attribute usage and enumeration value updates](https://harbyn.com/changes/amazon-sp-api/2026-10-14-sp-api-updates-new-listings-items-api-ivp-values-in-eu5-jp-and-ca-stores-oct-2.md) (effective Oct 26, 2026)
- [Supabase: four CBC-mode TLS 1.2 cipher suites will be removed from project HTTP APIs](https://harbyn.com/changes/supabase/2026-10-12-an-outdated-subset-of-tls-1-2-ciphers-will-be-disabled-on-project-http-apis.md) (effective Nov 10, 2026)
- [Google Workspace APIs: OAuth clients must be marked as agentic to call Google Workspace MCP servers](https://harbyn.com/changes/google-workspace/2026-10-12-oauth-clients-must-be-marked-as-agentic-to-call-google-workspace-mcp-servers.md) (effective Nov 11, 2026)
- [Bitbucket Cloud API: Git Credential Manager upgrade required for OAuth 2.0 Git authentication](https://harbyn.com/changes/bitbucket/2026-10-13-git-credential-manager-upgrade-required-for-oauth-2-0-git-authentication.md) (effective Nov 30, 2026)

[All upcoming deadlines](https://harbyn.com/deadlines.md)