Skip to main content

Choose your path

There are five common reasons people land here. Pick the one that matches what you are building, read the track in order, and skip the rest. Every track is a real reading path, not a table of contents.

~10 minReplace passwords in my app

Passwordless login, backed by a signature instead of a shared secret.

~7 minGive my AI agents real authority

Scoped, revocable, provable agent identity instead of a stored API key.

~6 minMove money on Litecoin

Signed intent that settles on a public ledger you can verify yourself.

~8 minEvaluate the security model

For a CTO or security reviewer deciding whether this holds up.

~12 minRun this in production

Scaling, failure behaviour, monitoring, and who owns which failure.

Replace passwords in my app​

For you if: you own a login screen and you are tired of resets, OTP delivery, and credential-stuffing traffic.

  1. Identity & Authentication — what replaces the password, at a glance.
  2. Authentication Flow — the canonical challenge, signature, and verification sequence.
  3. Passwordless SaaS Login — the same flow applied to a real session-issuing login.
  4. Step-Up Authentication — re-verify before the actions that actually matter.
  5. API Reference: Authentication — the calls you write to make it work.

Read time: about 10 minutes.

Give my AI agents real authority​

For you if: you have agents that need to do things, and a static key in an environment variable is the only thing standing between them and your production data.

  1. Why AI Systems Are Insecure Today — the problem, stated precisely.
  2. PTERI for AI Authority — agents as principals with scoped, revocable identity.
  3. PTERI Intelligence & MCP — the tools an agent gets over the Model Context Protocol.
  4. AI Agents & Autonomous Workflows — what a bounded agent workflow looks like end to end.
  5. Machine-to-Machine Services — the same model when the caller is a service, not an agent.

Read time: about 7 minutes.

Move money on Litecoin​

For you if: you are building payouts, settlement, or any flow where a transaction has to be provably authorized.

  1. Blockchain-as-a-Service — node access, indexing, and broadcasting, without custody.
  2. UTXO Model — why there is no hidden account balance to reconcile.
  3. Identity-Bound Intent — one signature that proves who, what, and approved.
  4. Verifiable Settlement — how anyone confirms a payment without trusting us.
  5. Payments & Payouts — the assembled flow.

Read time: about 6 minutes.

Evaluate the security model​

For you if: you are a CTO or security reviewer and you need to know what this actually removes, and what it does not.

  1. Where Things Live — the trust boundary, drawn explicitly.
  2. Key Custody & Biometrics — what never leaves the device.
  3. Threat Model Overview — the assumptions the model is built on.
  4. Threats Eliminated by Design — attack classes that fail structurally, not by mitigation.
  5. Threats Explicitly Out of Scope — read this one before you decide. It is the honest half.
  6. Cryptographic Foundations — the primitives underneath the claims.

Read time: about 8 minutes.

Run this in production​

For you if: the decision is made and now you have to operate it, scale it, and explain it to whoever carries the pager.

  1. Stateless by Design — why there is no session state to lose.
  2. Horizontal Scaling — adding instances behind a standard load balancer.
  3. Failure Modes & Degradation — what happens when verification is unavailable.
  4. Observability & Monitoring — what to watch, and what is never logged.
  5. Operational Responsibility Model — who owns wallets, signing, verification, settlement, and your business logic.
  6. Pricing Plans — which tier your workload needs.

Read time: about 12 minutes.

Still not sure?​

Start by making one call work. The concepts land faster once something has verified.

Do it firstQuickstart

Get a key and make your first verified call.

Common questionsFAQs

The questions most people ask before they commit.