1 · open source
EvidenceBook
Your agents' actions as a book you keep. Each action is sealed when it happens, so the record's date was fixed before anyone asked for it.
Press kit
Action State, in one paragraph.
We want to give AI agents bigger responsibilities and bigger decisions, but agents make mistakes, even with the best intentions, and other parties are involved. Action State builds the evidence that lets someone else check what an agent did. EvidenceBook is open source: each agent action is sealed into a book its owner keeps. Terms Packs are the versioned files a book is judged against: EU AI Act Obligations, and Outcomes (a draft). Countersign is a second signature from someone who isn't you: Action State recomputes the checks its practice statement specifies, signs what it checked and what it found, and keeps its own transparency log. It is free while the first businesses come on board. A free witness timestamps anyone's records without seeing their contents. Checking a record is free, works offline, and keeps working without Action State.
Announcement, 22 Oct 2026: Action State Launches EvidenceBook to Make AI Agent Work Independently Checkable ↗
Coverage: Startup Action State launches tools for verifying interactions between AI agents ↗, Paul Gillin, SiliconANGLE, 22 Oct 2026.
Co-written with OPAQUE, 14 Sept 2026: Deep-dive: how the public TRACE Registry is built to be distrusted, Steven Mih and Imran Siddique (LinkedIn ↗, Field Notes ↗).
Three things, in this order
2 · a service
Countersign
A second signature from someone who isn't you. Action State recomputes the structural checks its practice statement specifies over a digests-only evidence bundle, signs what it checked and what it found, and keeps its own transparency log. Free while the first businesses come on board.
3 · free for everyone
A free witness
A public transparency log that timestamps a record's digest without seeing its contents. Witnesses are plural by design: anyone can run one.
Facts sheet
Every line links its source.
| Fact | Source |
|---|---|
| Built on two published IETF standards: the SCITT architecture (RFC 9943) and COSE Receipts (RFC 9942). | RFC 9943 · RFC 9942 |
| The record format is written up as IETF Internet-Drafts. These are individual submissions, not working-group documents. | draft-mih-scitt-agent-action-capsule draft-mih-scitt-checkpointed-local-log draft-mih-sokolov-scitt-payload-binding draft-mih-sato-agent-accountability-composition draft-mih-agent-bilateral-attestation draft-mih-scitt-agent-action-capsule-sel-disc draft-mih-agent-disclosure-envelope draft-mih-zhang-agent-disclosure-bundle draft-mih-agent-accountability-conformance draft-mih-agent-evidence-request draft-mih-agent-settlement-records |
| The open-source tooling is licensed Apache-2.0: EvidenceBook, the producer library, the verifier and the witness. | evidencebook · capsule-emit · scitt-cose · capsule-anchor |
| The specification repository follows IETF terms: BCP 78/79 for the text and the Revised BSD License for code components. | agent-action-capsule LICENSING.md |
| No patents. The related provisional patent family was expressly abandoned on July 6, 2026, and no license is required. | IETF 126 Hackathon project page · agentactioncapsule.org/ip |
| Anyone can check a record with the open verifier, in the browser or offline, without an Action State account. | verify.agentactioncapsule.org · scitt-cose |
Founder
Steven Mih
Founder and CEO, Action State Group, Inc.
Bio · one line
Steven Mih is a serial startup entrepreneur and the founder and CEO of Action State Group, which builds EvidenceBook: open, checkable records of what AI agents actually did.
Bio · short
Steven Mih is a serial startup entrepreneur and the founder and CEO of Action State Group, which builds EvidenceBook. When agents take real actions, logs aren't evidence for the agentic economy, so Action State builds open, vendor-neutral evidence that anyone can check. A three-time founder (Ahana, acquired by IBM; Across AI; Action State Group), he is also the former CEO of Aviatrix.
Bio · full
Steven Mih is a serial startup entrepreneur and the founder and CEO of Action State Group, the company behind EvidenceBook. His premise: when AI agents book, buy and commit on someone's behalf, logs aren't evidence for the agentic economy. Action State builds open, vendor-neutral infrastructure so that what an agent did can be checked by anyone, including the other party. That includes the Agent Action Capsule IETF drafts, the open-source scitt-cose verifier, and a free public witness.
Steven has spent his career moving early into technical inflection points, from open-source databases to cloud networking, data analytics and now agentic AI. He is a three-time founder: he co-founded Ahana, the managed service for open-source Presto that IBM acquired in 2023, then co-founded Across AI, and now leads Action State Group. He is the former CEO of Aviatrix, served on the governing board of the Presto Foundation at the Linux Foundation, and led worldwide sales at Couchbase.
He lives in San Francisco, where he serves on the board of the Francisco Park Conservancy.
Logos & images
All of these are in the press kit ZIP, along with this page as plain text.
Sample report
The sample report is the sealed EU AI Act example: Obligations: which EU AI Act obligations can this record even speak to? Its last section re-runs ten checks on the sealed records inside the file, in your browser, offline; one changed byte fails them.
Two more worked examples are on actionstate.ai/demos:
- Outcomes: did the agent do the job, as a buyer would ask it?
- Agentic commerce: an agent that extends credit, and what a regulator can check
Not a sealed report: what a month looks like, illustrative, simulated figures, showing the format only.
Contact