Build on CERTEN

Proof-gated cross-chain execution on Accumulate. One API key, one hierarchy of authorities, and cryptographic evidence your counterparty can check without trusting you.

What this is

CERTEN is a control plane, not a chain you connect a wallet to. You call an API; it coordinates identity, multi-party authorization, proof generation, and execution across Accumulate and 13 target chains. There is no node to run and no IP address to point at — the surface is https://gateway.kompendium.co and a client library.

Five minutes, start to finish

1. Get an API key — sign in at gateway.kompendium.co/portal. Self-service, no ticket.
2. Install the client — npm install -g @certen.io/cli or npm install @certen.io/sdk
3. Make a signing key — certen keys generate --name dev. It never leaves your machine.
4. Create an identity you control — certen identity create --name my-org --sign-with dev

npm install -g @certen.io/cli
certen keys generate --name dev
certen auth login --api-key ck_live_...
certen identity create --name my-org --sign-with dev
certen identity get <id>        # wait for status=active AND can_sign=true

Drive it from an AI agent

There is a Model Context Protocol server, so an agent can read and act on CERTEN through the same API. It is read-only by default — write tools are not registered at all unless you set CERTEN_MCP_ALLOW_WRITES=1 — and it never holds a signing key.

npm install -g @certen.io/mcp
CERTEN_API_KEY=ck_live_... certen-mcp        # 8 read tools
CERTEN_MCP_ALLOW_WRITES=1 certen-mcp         # adds the write tools, deliberately

Your key never reaches us

Identities are controlled by an Ed25519 key you generate and hold. The SDK takes a sign callback; the CLI keeps an encrypted keystore in ~/.certen/keys. Both send signatures, never private keys — which is why nobody here can act on your behalf.

Verify without trusting us

Every execution produces a proof. Deployed contract addresses are published at GET /v1/chains (public, no key), and a proof holder can mint a revocable share link so a counterparty with no CERTEN account can fetch and check the evidence themselves.

Start here

Guides

Reference