September 2026 releases — index of the three release notes
September 2026 shipped in three releases. This page links each one with its date range and headline changes, and lists the build 2.0.96.231 items that are documented elsewhere.
Summary
September 2026 shipped in three releases, each with its own release notes. This page is the index for the month: it says what each release covers and links to its full notes, so the details live in one place. It is not a separate release.
The three September releases
| Release notes | Dates | Headline changes |
|---|---|---|
| 1–20 September | 1 to 20 September (build 2.0.96.231 and its updates) | Failed runs explained as causes, passing runs checked for what they miss, the Project Assistant, multi-document requirements and Excel workbooks, workflows that build themselves, the Workflow Doctor, fuller Postman imports, and a performance and memory pass. |
| 21–28 September | 21 to 28 September | Performance and load testing built from your existing tests, performance targets in the traceability matrix, 18 authentication methods, file uploads and form bodies, and connection settings per test and environment. |
| 29–30 September | 29 and 30 September | Performance testing becomes a paid add-on (Starter, Team, Scale and Custom packages, included in the Trial), filling existing tests from a data set, and a server log for every load run. |
Read them newest first if you are upgrading from August: the 29–30 September notes change the licensing described in the 21–28 September notes.
Also in build 2.0.96.231
These arrived with the first September build. Each has its own documentation, so the release notes above mention them only briefly.
- JSON-RPC 2.0 and MCP testing. Import an OpenRPC document, or discover an MCP server's tools as testable endpoints, with assertions for results and errors. Trial and Enterprise. See JSON-RPC 2.0 and MCP testing.
- WebSocket-RPC testing. Connect to a gateway, choose the actions to test, and build stateful workflows on one held connection. Trial and Enterprise. See WebSocket-RPC testing.
- Streaming responses (Server-Sent Events). Event streams are parsed into events you can assert on. See SSE streaming testing.
- MCP server for AI agents. Connect Claude, Cursor or another MCP client to Shift-Left API. Professional, Trial and Enterprise. See MCP server.
- CI/CD integrations in a public repository. The GitHub Action, Azure DevOps task and Jenkins plugin are installable today; other CI systems call the REST API. See CI/CD integrations and the Public API.
- More AI providers. OpenRouter, Cerebras and Hugging Face are fully usable. See AI settings.
- Licensing on first run. A fresh installation no longer licenses itself. Register for a Free or Trial licence and activate it on first run. The Free (Citizen Developer) licence has no end date on the edition and is renewed free every six months. See License management.
Related links
Older release
Release notes — August 2026
Release notes
Newer release
Release notes — September 2026 (1–20 September)
Release notes
Related articles
- Release notes — September 2026 (29–30 September) · Release notes
- Release notes — September 2026 (21–28 September) · Release notes
- Release notes — September 2026 (1–20 September) · Release notes
Helpful links
- All release notes · Browse by month
- Platform overview · Context for new users
- Getting started · Install + first run
- Configuration fundamentals · CI-ready stability
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