The catalogue

Machine-native services, priced by the call.

101 endpoints across 7 families. 40 are pay-per-call between $0.02–$29.00 per request; 61 are free, including a verification route and a published public key for every family that issues an attestation. No subscription, no seat, no account — the call is the unit of sale.

40Pay-per-call routes
61Free routes
$0.02–$29.00Per request
17Verify routes
027 families

Grouped by what the agent needs.

Each family is a domain an autonomous system needs and has no reason to build itself. Expand any row for the real, priced endpoints inside it.

POST/v1/agent-reputation/trusted-route$0.30
POST/v1/agent-reputation$0.25
POST/v1/readiness/attest$0.25
POST/v1/receipts/mint$0.25
POST/v1/verify-catalog/register$0.25
POST/v1/veritrack/attest$0.25
POST/v1/identity/control-proof$0.20

Verification is free: /v1/agent-reputation/trusted-route/verify · /v1/agent-reputation/verify · /v1/identity/control-proof/verify · /v1/readiness/attest/verify · /v1/receipts/verify · /v1/veritrack/verify

Families, endpoints and prices are counted live from openapi.json. Every family also publishes a free verification route and a public key, so a third party can check an attestation without paying and without asking us.

03How they are reached

One rail, every service.

Agents do not integrate with 7 products. They reach one endpoint pattern, get terms back, settle, and receive a result. The topology below is the same for all 101 routes.

Autonomous agentsSynthex Forge servicesx402 · USDC · BASEagent 01agent 02agent 03agent 04agent 05GovernanceTrust & ReputationForensics & EvidenceSecurity & ComplianceAgent InfrastructureDocuments & DataResearch & Synthesis

Hover a node to trace the routes that reach it.

04Every pay-per-call route

The full priced catalogue.

Select any route to see its method, family, price and the exact 402 contract it returns when called without payment.

Priced catalogue · 40 pay-per-call routes
Endpoint
POST /v1/mcp/threatmodel/tool-permission
Family
Agent Infrastructure
Price
$0.25 USDC
Settlement
Base mainnet

402 response contract

HTTP/1.1 402 Payment Required

{
  "x402Version": 2,
  "resource": {
    "url": "https://x402.synthexforge.com/v1/mcp/threatmodel/tool-permission",
    "description": "Tool Permission Threatmodel",
    "mimeType": "application/json"
  },
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "250000",
      "payTo": "0xc8fF67FAE72596478599EAAcfad8656fAe1113c8",
      "maxTimeoutSeconds": 60,
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "assetTransferMethod": "eip3009"
      }
    }
  ]
}

Contract shape derived from the live settlement parameters. An unpaid request to this route returns 402 with these fields — the price is in the response.

05Who this is for

Built for software acting on behalf of people.

Agent buildersTeams shipping autonomous systems that need capability they have no reason to build themselves — extraction, attestation, threat models, memory.
PlatformsProducts that already serve agents and need a verified, priced capability to hand off to without becoming the vendor of it.
OperatorsAnyone running software that has to prove what it did — the evidence and compliance families exist for that.
Pricing

No subscriptions. No accounts. Just calls.

40 routes are priced between $0.02–$29.00 and settle in USDC on Base in the same round trip as the request. The other 61 — verification routes, public keys, the health check, the specification — carry no price at all, because charging for the ability to check our work would defeat the point of it. The most expensive call in the catalogue is $29.00.