Jazz blogEssays from building Jazz: approvals that travel, context under pressure, and measuring agents on everyday work.https://jazz-cli.vercel.appenHow Jazz makes a write safe: the two-phase approval modelhttps://jazz-cli.vercel.app/blog/how-jazz-makes-a-write-safehttps://jazz-cli.vercel.app/blog/how-jazz-makes-a-write-safeA deep dive into the one mechanism that lets a Jazz agent mutate your filesystem and still run unattended: tools that propose, hidden twins that execute, and a gate that is the same path for a human and a policy.Mon, 31 Aug 2026 00:00:00 GMTThe missing door in agent-to-agenthttps://jazz-cli.vercel.app/blog/the-missing-doorhttps://jazz-cli.vercel.app/blog/the-missing-doorA2A gives agents a wire to talk over. The hard part was never the wire. It is deciding what a stranger's software may learn about you, and answering with access instead of an answer.Mon, 31 Aug 2026 00:00:00 GMTWire up your first peer in five minuteshttps://jazz-cli.vercel.app/blog/wire-up-your-first-peerhttps://jazz-cli.vercel.app/blog/wire-up-your-first-peerTwo agents, one machine, one bounded question. A copy-paste walkthrough of Jazz's agent-to-agent links: serve, invite with a link, accept, ask, and watch a tier refuse to over-share.Mon, 31 Aug 2026 00:00:00 GMTYour agent has friends now, and here's what that unlockshttps://jazz-cli.vercel.app/blog/your-agent-has-friendshttps://jazz-cli.vercel.app/blog/your-agent-has-friendsJazz 0.15.13 lets your agent talk to other agents, other people's and other frameworks'. No shared passwords, no merged data. A tour of what becomes possible when agents can ask each other one bounded question at a time.Mon, 31 Aug 2026 00:00:00 GMTJazz vs the alternatives: which agent runtime fits wherehttps://jazz-cli.vercel.app/blog/jazz-vs-the-alternativeshttps://jazz-cli.vercel.app/blog/jazz-vs-the-alternativesA factual comparison of Jazz against chat CLIs, hosted agent platforms, and plain cron plus scripts — what each does well, and where an open-source, self-hosted agent harness wins.Wed, 26 Aug 2026 00:00:00 GMTThe harness is the producthttps://jazz-cli.vercel.app/blog/the-harness-is-the-producthttps://jazz-cli.vercel.app/blog/the-harness-is-the-productWhat an agent harness actually is — from the first tool call to the guards that keep a run alive for a hundred iterations unattended. A tour of the Jazz harness, with the real numbers.Sun, 23 Aug 2026 00:00:00 GMT