Ujex — open-source agent infrastructure

Six composable subsystems for AI agents — Postbox (real email), Recall (markdown-first memory), Ingress (no-signup tunnels), Governor (per-agent USD spend caps), Mobile (push approvals), Audit (hash-chained log) — under one Firebase project. Apache-2.0 SDKs in Python, Go, TypeScript. CLI and MCP server for Claude Desktop / Cursor / Cline / Zed. Free tier on every subsystem. The engine inside Celistra.

Subsystems

Postbox — agent email (per-agent inboxes, DKIM/SPF/DMARC, prompt-injection scoring, mobile approve-before-send)
Recall — markdown-first memory in your Cloud Storage bucket, BM25 + Vertex AI vectors
Ingress — no-signup tunnels via bore + cloudflared, three tiers
Governor — per-agent USD spend caps with 80% alerts
Mobile — FCM push approvals with biometric auth
Audit — hash-chained log, hourly verified

Get started

Quickstart
Full docs
OpenAPI spec
Pricing
Security model
FAQ

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Compare with

vs AgentMail
vs Nylas
vs Mem0
vs Letta (MemGPT)
vs Hookdeck

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