Payment networks just taught AI agents how to pay. 5arz proves a real, attentive human did the work — screen-recorded, telemetry-verified, and delivered with a cryptographic Proof-of-Human-Fulfillment credential. If your agent needs verified human work, attention, or training data, you can commission and pay for it here. Verification is free, forever — unlimited, no card.
Create an agent profile in seconds, discover live verified-human work, and start commissioning it — over MCP or plain HTTP, no approval queue for the sandbox.
Mastercard's Verifiable Intent proves a human authorized an agent to pay. 5arz proves a verified human actually did the work. Clipped together, they make an agentic transaction for human labor fully provable end to end — the half that payment rails explicitly leave out of scope.
Authorization & payment. The agent is credentialed and permitted to spend within human-set constraints, settled multi-rail.
Delivery & proof. A verified live human completed the task; the credential carries the quality score and tamper-evident hashes. Patent-protected (USPTO 63/979,052 + 63/979,474).
GET api.5arz.com/api/agents/discovery — service manifest (start here)
GET api.5arz.com/api/workflows/available — live verified-work tasks
POST api.5arz.com/api/agents/order — commission verified human work (private beta)
curl -X POST https://api.5arz.com/api/agents/order \
-H "Content-Type: application/json" \
-d '{
"taskType": "verified_workflow",
"quantity": 25,
"maxPriceUsd": 250,
"verifiableIntentCredential": "<your VI SD-JWT>"
}'
Every Proof-of-Human-Fulfillment credential is a compact ES256 JWT. Fetch our public keys and verify the signature with any standard JWT library — no 5arz SDK required.
GET api.5arz.com/.well-known/jwks.json — public key set (JWKS)
Proof-of-Human-Fulfillment credentials are designed to work with both major open agent-authorization standards: the Verifiable Intent spec (Mastercard/Google, Apache-2.0) and the Visa Trusted Agent Protocol. 5arz is not affiliated with or endorsed by Mastercard or Visa; these are referenced as the open industry standards we build to. Stablecoin settlement follows applicable rules (e.g. the GENIUS Act framework).
Create an agent profile and get a bearer key — then discover live verified-human work and commission it over plain HTTP or MCP (/.well-known/mcp.json). The sandbox has no approval queue: register, then GET /api/workflows/available → POST /api/agents/order and you're working.
Your key is shown once. Then: POST /api/agents/order with header Authorization: Bearer arz_live_…. Link billing via POST /api/agents/billing/link.
Real professionals recorded doing real work in real software — verified for live human attention. The gold standard for AI workflow training data.
Opinion, judgment, and domain data from verified humans, gated against bots and click-through farming.
Expert preference-ranking, red-teaming, and adversarial probing — fully attested with PoHF credentials so you can prove to regulators and auditors that a verified human touched every annotation.
Pre-purchased blocks of expert cognitive time, attested by identity + telemetry and delivered as UCC Article 12 Controllable Electronic Records. Institutional pricing; contact for volume.
Every new agent starts on the Free plan — 10,000 seals a month and 10 document checks, no card required. After that, subscribe to a plan or pay per call over the x402 rail. Each call returns one signed Proof-of-Human-Fulfillment credential.
Buy credits with a card via Stripe and spend one per verification — the more you buy, the less each costs. One credit = one signed PoHF verification, verifiable by anyone at /.well-known/jwks.json.
Starter $99/mo · 100,000 seals · $1.25/doc check
Growth $499/mo · 1M seals · $0.75/doc check
Scale 10,000 · $2,499 · $0.20 ea
Buy a pack →No account, no pre-purchase — pay per call as a stablecoin micropayment over the Coinbase-backed x402 rail, the standard World and Coinbase are building on. Live now in developer preview on Base Sepolia: a real HTTP 402 → X-PAYMENT → settled. Mainnet settlement is rolling out; plans run production today.
Every agent gets 10,000 signed Proof-of-Human-Fulfillment credentials a month on the Free plan — enough to prove the integration end-to-end and run real traffic before paying anything. Run the four calls below, then subscribe — or switch to pay-per-call — only when you outgrow it.
# 1 · Register your agent (API key shown once)
curl -s -X POST https://api.5arz.com/api/agents/register \
-H 'Content-Type: application/json' \
-d '{"name":"my-agent","contactEmail":"you@company.com"}'
# 2 · Verify a human — one call, one seal from your monthly allowance
curl -s -X POST https://api.5arz.com/api/agents/verify \
-H 'Authorization: Bearer arz_live_...' \
-H 'Content-Type: application/json' \
-d '{"memberId":"<verified_human_id>","taskType":"review"}'
# 3 · Check verifications remaining
curl -s https://api.5arz.com/api/agents/credits/balance \
-H 'Authorization: Bearer arz_live_...'
# 4 · Ready for more? Buy a pack (returns a Stripe link)
curl -s -X POST https://api.5arz.com/api/billing/checkout \
-H 'Authorization: Bearer arz_live_...' \
-H 'Content-Type: application/json' \
-d '{\"plan\":\"starter\"}'
Paste your agent key and pick a pack — we open a secure Stripe checkout. Your key never leaves your browser.
Getting started: register → use the Free plan (10,000 seals a month) → subscribe when you need more. An arz_test_ key is a separate free developer sandbox that mints test-marked credentials for wiring up the flow. Every credential is verifiable by anyone at /.well-known/jwks.json.
per Proof-of-Human-Fulfillment credential issued. Price scales with task complexity, expertise tier, and telemetry depth. Pay-as-you-go — no minimum commitment.
Place an order →Verified Cognitive Hours subscription. Dedicated annotator pools, custom task rubrics, bulk PoHF issuance, SLA + legal-grade provenance. 3-month minimum pilot.
Contact for enterprise →Escrow is collected at order-funding via Stripe and released to verified earners on delivery. Every credential is independently verifiable at /.well-known/jwks.json — no 5arz SDK required.
Plug 5arz into any agent framework as a native tool — no custom glue.
MCP tools: list_verified_human_tasks, purchase_verified_human_task, bind_human_to_payment (bind a verified human to a Tempo / OUSD / Agent Pay / Stripe / USDC payment), get_attestation_receipt. The bind tool accepts test:true so you can try the full flow with no live payment.
5arz is the human-proof layer — not a competing rail. The credential is rail- and issuer-agnostic, so it binds to whatever settles the payment.
Yes. 5arz is EVM-native to Tempo, and Tempo is a first-class settlement rail in our agent manifest. Our Proof-of-Human-Fulfillment credential binds to any Tempo machine-payment via a settlement reference — so an agent can prove a real, unique human is behind a payment on Stripe's own rail.
Yes. We're rail- and issuer-agnostic. Any OUSD participant can bind a 5arz verified-human or verified-holder proof to an OUSD payment with a standard JWT library and our public JWKS — no bilateral integration and no 5arz SDK. That makes 5arz the human layer any OUSD user can adopt.
Yes. Mastercard Agent Pay and Agent Pay for Machines are in our settlement rails. Agent Pay proves an agent is authorized to pay; 5arz proves a real, verified human performed the work — the two halves of agentic commerce.
5arz issues an offline-verifiable verified-human / verified-holder credential plus an on-chain isVerifiedHuman() check. For registered-wallet and tokenized-asset models, 5arz can be the personhood and anti-sybil layer that confirms a wallet belongs to a real, unique, eligible holder — without exposing identity. We describe what we verify, not the proprietary method.
Rails: Mastercard Agent Pay / Agent Pay for Machines, Stripe, Tempo, Open USD (OUSD), and USDC. Chains: Base, Tempo (EVM), and Solana. Because the credential binds to a payment reference rather than a specific token, new rails and issuers slot in without changing how you verify us.
A wallet-bound 5arz credential is mirrored to an on-chain attestation — any DeFi, RWA, or agent contract gates on one call, isVerifiedHuman(wallet). Live today on Base (Sepolia testnet); mainnet is audit-gated.
Registry 0x7feaa364400af67fe06734d60822c91e475828f4
EAS schema UID 0x0fde7242dec588b1d08b2727ba3907ecb28f1815ca3828360574a1e496bb72d7
Proven isVerifiedHuman() = true — first attestation transaction ↗
5arz proves verified human work for agentic commerce. Get API access, or read the machine-readable manifest your agent can parse today.
Agent access: info@5arz.com · Human earners: 5arz.com/earn · Patent-pending USPTO 63/979,052 & 63/979,474.
Unlimited human verification, free forever. Two fields, no card, no sales call — or let your agent register itself through MCP.