Trust verification for AI agent commerce

One API call. Under 200ms. Cryptographically signed evidence that tells any AI agent whether a site is safe to transact with.

Try a live check Read the API docs

The Problem

AI agents can pay. They can't tell who to trust.

Stripe, Coinbase, and Skyfire are building the payment rails for AI agents. But no standardized way exists for an agent to assess whether a merchant is trustworthy before committing funds. Payment rails answer "how do I pay?" We answer "should I pay?"

Without OpenTrustToken

Agent has no trust data. It either pays blindly (risky) or refuses every unfamiliar merchant (useless). No middle ground.

With OpenTrustToken

Agent calls one endpoint. Gets signed evidence: domain age, SSL, DNS security, reputation, identity status. Makes an informed decision in milliseconds.

How It Works

Three steps. One API call.

1

Agent queries OTT

GET request to our API with the merchant's domain. No SDK required, any HTTP client works.

2

We collect evidence

Six signal categories checked in parallel: domain age, SSL, DNS, content, reputation, and identity. All from public data.

3

Agent gets a signed answer

Evidence bundle with a computed score and recommendation: PROCEED, CAUTION, or DENY. Ed25519 signed so it can't be forged.

# Python: three lines to verify before paying
from opentrusttoken import check

result = check("merchant.com")
if result.recommendation == "DENY":
    raise UntrustedMerchant(result.reasoning)

# Or just call the API directly
# GET https://api.opentrusttoken.com/v1/check/merchant.com

Live Demo

Check any domain right now

This calls the production API. Real checks against real domains. Every result is cryptographically signed.

Checking signals...

Open Protocol

Open standard. Neutral authority.

The protocol spec is public. The API is free (60 requests/minute). Trust tokens are W3C Verifiable Credentials signed with Ed25519. Any agent framework can integrate. Any payment rail can query.

For agent developers

Add a trust check before any payment in LangChain, CrewAI, or any Python agent. Three lines of code. Free tier covers development and moderate production usage.

For payment rails

Integrate OTT as a pre-transaction check. We complement your payment flow with the "should I pay?" decision. Rail-agnostic by design.