Arcjet blog

Introducing Arcjet for coding agents: security policies for Claude Code, Codex, Cursor, Muse Code, and Copilot

Introducing Arcjet for coding agents: security policies for Claude Code, Codex, Cursor, Muse Code, and Copilot

Discover every coding agent on developer endpoints and apply one set of security policies across Claude Code, Codex, Cursor, Muse Code, and Copilot.

David Mytton

Oct 8, 2026

Read post 4 min read

More recent

Introducing Agent Runtime Security: Observe, Enforce, Audit

Introducing Agent Runtime Security: Observe, Enforce, Audit

David Mytton

Sep 17, 2026

Read post 6 min read

The two speeds of AI agent runtime security

The two speeds of AI agent runtime security

David Mytton

Jul 29, 2026

Read post 11 min read

SDK releases, security briefing improvements, new activity view

SDK releases, security briefing improvements, new activity view

David Mytton

Jul 3, 2026

Read post 3 min read

Recent posts

Older notes and announcements from the Arcjet team.

July 1, 2026Engineering Running PII detection locally with the Rampart NER model
June 12, 2026Changelog SDK performance releases and proxy detection
June 11, 2026Engineering Making Arcjet's Wasm bot detector smaller and faster
June 3, 2026Company News Announcing advanced bot signals to detect automation without CAPTCHAs
June 2, 2026Engineering Designing a CLI for AI agents
May 22, 2026Changelog Unified skills, Python docs, email management
May 20, 2026Engineering Serving AI models with Open Inference Protocol APIs
May 15, 2026Changelog Arcjet CLI and team management
May 13, 2026Engineering How we defend MCP tool outputs from prompt injection
April 30, 2026Company News Introducing Arcjet Guards: security inside the agent loop
April 28, 2026Engineering Building a production MCP server in Go
April 24, 2026Changelog Advanced client signals, request filtering, build with agents
April 22, 2026Engineering From devcontainers to VMs: parallel dev environments for AI agents
April 17, 2026Changelog Arcjet MCP server, coding agent plugins, weekly security briefing
April 16, 2026Security Developers can finally own security
April 14, 2026BlogHow to Roll Out Application Layer Security Without Breaking Production