Upgrade Your AWS Deploy Orb to Get Deploy Markers
Bump your AWS deploy orb version to unlock automatic deploy markers, deployment timeline visibility, auto-rollback, version comparison, and OIDC — no extra setup beyond a version bump.
CircleCI Blog
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Posts by CircleCI Blog
5 takeaways from the State of Software Delivery Q2 Pulse report
The velocity gap is widening. See what 20M+ workflows reveal about merge efficiency, delivery costs, and the teams pulling ahead in the Q2 Pulse report.
Rebuilding the CircleCI CLI from scratch
We rebuilt the CircleCI CLI from the ground up in Go: human-first output, --json everywhere, browser OAuth login, a built-in debugging TUI, and an MCP server for your coding agent.
ACP vs MCP: What's the difference for agentic coding?
ACP vs MCP: one connects your editor to a coding agent, the other connects agents to tools. Learn how they differ and when to use each.
What is mutation testing?
Mutation testing finds gaps that code coverage misses by changing your code and checking if tests catch it. Learn how it works and fits into CI/CD.
Why you should use Language Server Protocol (LSP) with Claude Code
Claude Code now has built-in LSP support. Learn how the Language Server Protocol gives agents compiler-accurate code navigation, plus benchmarks vs. grep.
Cut your environment setup time in half with Chunk sidecar snapshots
Build a faster agentic workflow. Create cached, shareable environments with Chunk sidecars to test and validate AI agent changes in the inner dev loop.
How to set up blue-green deployments with CircleCI
Set up blue-green deployments on Kubernetes with CircleCI. Automate parallel environments, validate behind an approval gate, and roll back in seconds.
Agentic validation needs different infrastructure
Validating agent code is expensive and slow. Here's how Chunk sidecars make it 10x cheaper and 3x more efficient.
Patterns of validation
Prompting agents to validate their work isn't enough. Here's what actually works.
Stop pushing broken code to CI: Wire Chunk sidecars into agent hooks
Give your AI coding agent a self-correcting loop. Chunk sidecar hooks catch failures while the agent still has context, so it fixes its own mistakes before code reaches CI.
Run your first microbuild in 5 minutes
Set up Chunk sidecars and run your first microbuild in five minutes. Wire a fast validation loop into your AI coding agent with CircleCI.
Getting started with Codex and CircleCI
Learn how to set up OpenAI's Codex, use it on a real codebase, and extend it with the CircleCI plugin to validate builds, fix failures, and automate maintenance.