Add idea: credential-less agent processes

ideas/credential-less-agent-processes.md

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+---
+title: Credential-less agent processes
+author: Rashid Rashidov (@rrashidov)
+date: 2026-07-08
+tags: [identity, sandboxing-isolation]
+---
+
+## The idea
+
+Credentials handed to an agent process — API keys, OAuth tokens, bound service
+credentials — are one prompt injection away from exposure. The process that can call the
+model is also the process that can be told to print its environment.
+
+CF should let a developer **bind a provider without the credential ever entering the
+process**. The developer declares the binding in the manifest (e.g. `bindings: [anthropic]`);
+at runtime the app calls a `localhost` sidecar that proxies the request to the real
+provider using a credential it holds but the app cannot read. From the app's perspective
+it speaks the standard provider API; it just never sees the key. Revoking or rotating
+the credential is an operator action, not a redeployment.
+
+How the credential is stored, how the sidecar is provisioned, and how per-user
+multi-tenant bindings work is open for the platform experts to propose.
+
+## Related
+
+- The `localhost` sidecar is a natural fit for the egress proxy in
+  [[localhost-only-egress-for-agents]].
+- The process boundary assumed here is strengthened by
+  [[stronger-workload-isolation-for-agents]].