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Developers/Agent Developer Kit
Free test credits to ship trusted AI agents

The T3N sandbox gives developers everything to build agents with verifiable identity, programmable authorization, and secure payments. Claim 20,000 test credits and start shipping.

  • 20,000 test credits — enough for 25 agents and ~5,000 protected actions.
  • Full SDK access — npm, MCP server, plus a Stripe-backed test merchant.
  • One signup, every protocol — A2A, ERC-8004, Entra Agent ID, MCP, Web Bot Auth.
Drop in beside your agent.
Ship trusted actions.

The T3 ADK wraps every outbound action your agent takes — verifying identity, substituting sensitive references inside a TEE, and writing an audit row to the ledger — before it ever reaches the destination system. Learn more

One SDK, every protocol (A2A · ERC-8004 · MCP)
Browse on GitHub
Everything you need to build, in one signup.

The T3N sandbox is the full stack — same SDK, same enclaves, same protocol coverage as production. We're just covering your gas.

20,000T3N

Test credits, instantly

Enough to register up to 25 agents and run roughly 5,000 protected actions.

25did:t3n

Verifiable agent identities

Cryptographically signed, W3C-compliant decentralized identifiers. Resolve to A2A cards, ERC-8004, Entra Agent ID — register once.

Stripetest mode

Agent Connect payments

Real placeholder-resolution flow inside the TEE. Run end-to-end payment intents with test cards — no PCI scope on your side.

FullSDK + MCP

Every integration surface

npm package, MCP server, CLI, REST/SDK, sample apps.

From signup to first protected action
in 5 minutes
1
Authenticate and claim

Sign in with Google and enter an optional campaign code. We’ll instantly provision your T3 decentralized ID (DID) and queue up your test credits.

2
Receive your credits and DID

Copy your API key directly from the success screen. Your test credits and DID will be assigned automatically to that API key. Note: During the test phase, you will not be able to retrieve your API key after this page, so please make sure to store them somewhere safe before you move on.

3
Install the SDK and build

npm install, initialize the client, and provide your API key. Set to sandbox — your app can open an authenticated TEE session and deploy your contract in 5 minutes.

import {
  T3nClient, loadWasmComponent, setEnvironment,
  createEthAuthInput, eth_get_address, metamask_sign,
} from "@terminal3/t3n-sdk";

setEnvironment("sandbox");

// your API key
const key = process.env.T3N_API_KEY!;
const address = eth_get_address(key);

const client = new T3nClient({
  // all crypto runs inside WASM
  wasmComponent: await loadWasmComponent(),
  // signs your login challenge
  handlers: { EthSign: metamask_sign(address, undefined, key) },
});

// open an encrypted session in the TEE
await client.handshake();
// prove your wallet → your did:t3n:…
await client.authenticate(createEthAuthInput(address));

// your token balance
const { balance } = await client.getUsage();
console.log(`Credits available: ${balance.available}`);
Real-world use cases. One SDK.

These are the reference agents included with the T3N sandbox. Review the contract and sample call — then start building. You're 30 minutes from a working demo.

Flagship demo · Super AI Week 2026

An agent that reads HR data and triggers bank transfers — without ever holding raw account numbers. The flagship demo for Super AI Week.

Stripe-backed checkout flow with an agent that picks vendors, places orders, and reconciles invoices on a real merchant account.

Agent reads applicant identity from a verifiable credential, fills government forms, and submits without exposing passport numbers in the prompt context.

Flight + hotel agent that books on the operator's card with a scoped, time-bound spending limit — single-hop delegation via A2A.

No — the campaign code is entirely optional. It exists for hackathon partners, conferences, and ecosystem programs that might be granting bonus credits. Sign up without one and you still receive the full 20,000 T3N starter allocation.
Sandbox credits will be generated alongside your DID and assigned to your API key once you signed up. Your API key will be immediately visible for saving once you signed up. There will be a rate-limit to one signup per email.
T3N sandbox has no monetary value and is scoped to non-production environments. Your did:t3n identities, audit ledger entries, and TEE contracts are persistent through sandbox and migrate seamlessly to production at GA — you don't have to rebuild.
Yes — Agent Connect on the T3N sandbox is wired to Stripe test mode. You can run the full placeholder-resolution → TEE-execution → audit-row flow end to end against the Stripe test API, with test card numbers. No PCI scope on your side.
The SDK and MCP server are framework-agnostic. The MCP server works with anything that speaks the Model Context Protocol — Claude Desktop, Cursor, custom hosts.
We're shipping the dev kit through 2026, with a phased production rollout aligned to APAC regulatory milestones (IMDA, HKMA, MAS). Sandbox builders get pre-GA pricing locked in. Subscribe to product updates and we'll send the GA date directly.
Signup data is stored under T3's APAC data residency (SOC 2 controls). Sensitive runtime data — what your agents actually process — never leaves the TEE. We never train models on customer data. Full details in our privacy policy.