The autonomous intelligence layer that lives between you and everything — reading, reasoning, negotiating, acting across every tool you use.
Penumbra is the autonomous intelligence layer that lives between you and everything. It reads, reasons, negotiates, and acts — across every tool you use — so your real attention is reserved for the decisions only you can make.
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“The first AI that genuinely replaces a chief of staff.”
Plays nicely with
The average knowledge worker now spends 76% of their weekon tasks a capable operator could handle: context-switching, drafting, chasing, scheduling, researching, reconciling. The remaining 24% is where the real work lives — and it's slipping.
We built Penumbra because the answer isn't another dashboard, another inbox, another copilot watching from the sidelines. The answer is an intelligence that quietly does the work — and only surfaces when you are the only one who can decide.
“Automation was a tool. Copilots were a suggestion. Penumbra is the first thing that feels like a colleague— one who has read everything, remembers everything, and knows exactly when to hand me back the wheel.”
Penumbra isn't a single model. It's a coordinated fleet of specialist agents, each with memory, tools, and the judgment to know when to escalate.
Penumbra reads your stack end-to-end — Slack, docs, Drive, inbox, the open web — and returns a ranked recommendation with sources, counter-arguments, and a next-best-action.
“Should we consolidate the EU data warehouse or keep regional splits?”
Auto-blocks, auto-reschedules, and negotiates with other assistants.
Patterns across calls, docs, and spend — pre-digested.
No prompt-crafting, no context-reloading, no morning catch-up. Penumbra is the first AI that compounds on its own memory.
Penumbra ingests email, docs, calendars, code, finance, and the open web. Every artifact becomes a typed memory you can inspect, scope, or revoke.
Define goals, guardrails, and escalation policies in plain language. Penumbra plans, self-critiques, and routes work across specialist agents.
Agents run 24/7 in a zero-retention enclave. You receive a single daily brief: what was done, what needs you, what's been saved.
Penumbra connects through auditable OAuth and signed MCP bridges. No scraping, no screen-reading, no middleware lock-in. Revoke any surface in one click.
14 days free. No credit card. If Penumbra doesn't reclaim at least 6 hours in your first week, we'll refund every cent — double.
For the founder, the IC, the polymath. One mind, fully amplified.
For teams of 3–50 who want a shared brain, shared memory, and shared wins.
For regulated industries. Your cloud, your keys, your compliance posture.
“I haven't opened Gmail in 11 days. My response time has never been better.”
“It caught a $14k billing error Ramp missed. Paid for itself in a single afternoon.”
“Penumbra quietly drafted the board memo, cited six sources, and asked me three sharp questions I had been avoiding.”
“It negotiated our Datadog renewal down 31%. My CFO keeps asking how.”
“The first AI that respects my calendar instead of bulldozing it.”
“It feels less like a tool and more like a junior partner I never have to manage.”
Copilots wait for prompts. Penumbra operates against standing goals. It plans, executes, and escalates — you review, you don't drive.
Only what you authorize, via audited OAuth and signed MCP bridges. Every action is logged, reversible, and scoped with a retention of zero.
It drafts in your voice and, on surfaces you explicitly allow, sends on your behalf with a visible signature. You can require approval on any class of action.
In a zero-retention enclave, regionally pinned. On Enclave plans you bring your own cloud and KMS — we never hold the keys.
Every agent step is an immutable, replayable trace. One click to revert, one click to critique, and Penumbra learns — bounded to your memory, never the public model.
If you love your inbox, your 37 browser tabs, and the exact feel of a Wednesday at 4pm — Penumbra will be deeply upsetting.
We're admitting 200 operators per week. Join 3,402 on the waitlist — most are off within 48 hours.