a4sx — the problems it solves

a4sx is the substrate your agents run on. One durable event ledger, the visibility and governance to run agents, and control over their secrets. A fleet router is coming: it will add control over their reasoning, and a flywheel that makes them cheaper and better over time. This page is the map: each section leads with the value (what you get), then how it works and where to try it in the product.

v0.3: the fleet router and the features that run on it are marked as coming: they are not yet available on the hosted service. "See what your agents are actually doing" now points to user-onboarding. The vault section no longer describes how secrets are stored. The previous version is still served as v0.2.

Read it top-down for the pitch, or jump to the problem you have. Every capability is a real tab in the app and a spec you can open in Docs, except the fleet router and what runs on it, which are coming.

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Value. A service emits webhooks, but your agent has nowhere to receive them. a4sx is the durable front door: point the webhook at it and your agent consumes a clean, replayable event stream.

The problem. You want your agent to react to events from some service (GitHub, Stripe, Jira, a CI run) but there's no easy, durable place to send those events to.

📥 Give your agent an inbox for the world · Events

📒 One ledger for agents running anywhere · Events

👁 See what your agents are actually doing · Atlas, Events

🏛 Govern how your agents are built · Patterns, Fleet

🔀 A fleet router is coming — use your subs, not API keys · coming

🔐 Share the secrets your agents need · Vault

♻ Spend fewer tokens, reason better over time · coming, with the fleet router

Try it