Build plugins for Claude

UpdateSep 25, 20263 days agoUnverifiedAdded Sep 28, 2026

Developers can now submit plugins to the Claude directory via a new portal. The portal includes features to track submissions through review and view usage analytics.

Topics: Developer tools, MCP

Anthropic's release notes

More Claude Platform releases

Every Claude Platform release

Date	Release	Type
Sep 244 days ago	We're expanding which refusals are billed to include refusals that arrive before any output when unverified Update	Update
Sep 244 days ago	We're resuming billing for refusals that arrive before any output when stop_details.category is "bio" unverified Pricing	Pricing
Sep 244 days ago	The Compliance API local session endpoints are out of beta for Claude for Microsoft 365 sessions in Excel unverified Beta	Beta
Sep 244 days ago	The Compliance API Activity Feed no longer returns file names, project document names, or artifact titles unverified Update	Update
Sep 235 days ago	Cache diagnostics is out of beta on the Claude API and no longer requires the cache-diagnosis-2026-04-07 beta unverified Beta	Beta
Sep 226 days ago	Claude Opus 5.5 launches with a 1M token context window and 128k output GA	GA
Sep 226 days ago	Claude Opus 5.5 breaking changes: thinking can't be disabled, forced tool_choice removed Update	Update
Sep 226 days ago	Fast mode research preview available for Claude Opus 5.5 on the Claude API Preview	Preview

Also shipped on Sep 25, 2026

Anthropic in September 2026

Date	Company	Release	Product	Type
Sep 253 days ago	Databricks	Tags for dashboards, notebooks, Databricks apps, and Genie Agents are now generally available unverified DatabricksDatabricks AppsGA	Databricks Apps	GA
Sep 253 days ago	GitHub	Default Enablement of Copilot Features for Copilot Business and Enterprise unverified GitHubGitHub CopilotGA	GitHub Copilot	GA
Sep 253 days ago	Gradium	2026.09.15 unverified GradiumPreview	Gradium	Preview
Sep 253 days ago	CodeRabbit	CLI v0.8.1 \| CLI unverified CodeRabbitPreview	CodeRabbit	Preview
Sep 253 days ago	Railway	Free VMs without an account, tracing, OpenCode on Cloud Agents unverified RailwayPreview	Railway	Preview
Sep 253 days ago	Microsoft	[In preview] Public Preview: Azure HorizonDB supports PostgreSQL 18 unverified MicrosoftAzure databases and analyticsPreview	Azure databases and analytics	Preview

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