Free to verify. Pay for proof — not vaporware.

The crypto is open source. The only thing you can buy this month is a founder-led sprint. Everything else is either free forever or still in development — and we say so.

Try it now · no account

Verify a sealed .epi before you talk to us

No other pricing page in this category lets you check the product mid-scroll. Offline verify will never require a subscription.

# install + verify a sample (offline)
pip install epi-recorder
epi verify sample.epi

PyPI Download sample.epi Browser check

Open Source

Free forever. MIT. No account required.

Verification will never cost money. That’s the point.

✓ Recorder, verifier, viewer, .epi format
✓ Ed25519 seal + offline epi verify
✓ CLI & Python SDK
✓ Annex, notarization, GitHub Action
✓ LangChain adapter & framework integrations

Unlimited offline use. Browser private check stays free. See known limitations.

pip install epi-recorder Star on GitHub

Available now · 3 slots / month

Agent Evidence Sprint

$1,500

Five days. One workflow. Signed artifacts. Findings report.

Your enterprise deals stall on “prove what your agent did.” This is the answer, in a week.

✓ Instrument one production-shaped agent path
✓ Sealed, signed .epi evidence you keep
✓ Offline verify walkthrough for your team
✓ Written findings + next-step recommendations
✓ Founder-led — not a ticket queue

Capacity is real solo capacity: three sprints a month. If we’re full, we’ll say so.

Email to book a sprint

Evidence Control Plane

Design partners

No monthly price. Product is still in development.

✓ Org key management
✓ Hosted receipts & retention
✓ Shared infrastructure for scale
✓ Founding pricing + roadmap influence
✓ Pilots from $5K

We’re taking 3–5 design partners — not selling a SaaS tier that doesn’t exist yet. When it ships, pricing will reflect what partners actually paid.

Design partner inquiry

Straight answers

Why is verification free forever?

Cryptographic evidence only works if it’s trustless. If you had to pay EPI Labs to verify your own files, it wouldn’t be trustless. The CLI is MIT-licensed. That’s the spine of the company.

What do I get in a $1,500 sprint?

Five focused days with the founder: one agent workflow instrumented end-to-end, sealed .epi artifacts your team can re-verify offline, and a short findings report. It is priced against unblocking enterprise “prove the agent” deals — not against billable hours.

Where is Hosted / Pro monthly pricing?

Removed from this page on purpose. We will not post a monthly number for infrastructure that is not ready to back a promise. Free offline verify stays free. Optional shared hosted checks may still appear on Account for existing free-tier usage — they are not the product we sell as a paid SKU today.

What is a design partner?

Someone who needs org keys, hosted receipts, or retention before the control plane is generally available. You get founding pricing, direct roadmap input, and a pilot from $5K. Capacity: a handful of partners, not a self-serve plan grid.

Prefer the long enterprise path? Enterprise page · mohdibrahim@epilabs.org