Prove a real, unique human performed an action; mint a signed, verifiable Proof-of-Human credential.
| Endpoint | https://mcp.5arz.com (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 9 tools · grade A (98) · pin ts_3a76df5f5a051afdf453522edf204c10 · protocol 2025-06-18 |
| First / last listed | 2026-10-27 01:52 UTC / 2026-10-27 01:52 UTC |
| Grade over time | 2026-10-27: A (98), 9 tools |
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Tools: register_agent verify_human check_credential get_vhh_index subscribe get_balance list_verified_human_tasks purchase_verified_human_task get_attestation_receipt
register_agent | Create a 5arz API key so your agent can request proof-of-human credentials. Every new key starts on the Free plan — 1,000 credential seals a month and 10 document checks, no card. Pass mode:"test" for an unlimited free sandbox key (arz_test_…) whose credentials are marked test:true — never treat test credentials as production proof. The key is shown once; store it. params: name*, contactEmail*, mode |
verify_human | Mint a signed Proof-of-Human-Fulfillment (PoHF) credential attesting a real, ID-verified, live human performed an action. Provide sessionId to attest work fulfillment, or memberId to attest that an ID-verified human is behind an account (optionally wallet-bound). This does not establish that the person holds only one account — read sybil_checked in the returned claims before gating one-per-person params: sessionId, memberId, wallet, walletSig, walletNonce, apiKey |
check_credential | Independently verify a 5arz PoHF JWT: checks the ES256 signature against the live public JWKS and validates expiry/not-before, then returns valid/invalid plus the decoded claims. No API key needed — this is pure cryptographic verification you could also do with any standard JWT library. Accepts either the legacy pohf_jwt / pop_jwt or the standards-conformant sd_jwt_vc (IETF SD-JWT VC, typ dc+sd-jw params: pohf_jwt* |
get_vhh_index | Return the current Verified-Human-Hour (VHH) index — the benchmark price of one hour of verified human work/attention, in USD. Free, no API key. Useful for pricing verified-human data and as a citable benchmark. params: none |
subscribe | Get a Stripe checkout link for a 5arz plan. Free (1,000 seals/mo, 10 document checks), Starter ($99/mo, 100k seals, $1.25/document check), Growth ($499/mo, 1M seals, $0.75/check), Scale ($2,499/mo, unlimited seals, $0.50/check). SEALS are credential signatures and are effectively free; DOCUMENT CHECKS are the vendor identity verification and are what you are really paying for. Human verification i params: plan*, apiKey |
get_balance | Return the current plan, seals and document checks used this month, and what remains. Requires an API key. params: apiKey |
list_verified_human_tasks | List currently-buyable verified human work tasks. Each task includes its USD price, remaining slots, supported settlement chains, and the kind of Proof-of-Human-Fulfillment receipt issued on completion. Free, no API key. params: limit |
purchase_verified_human_task | Buy one slot of a verified human task. Called without payment it returns an HTTP 402 / x402 challenge with settlement instructions; settle USDC on the offered chain and call again with x_payment and purchase_id to receive an attestation_id — a verifiable Proof-of-Human-Fulfillment receipt. No API key required; the payment is the authentication. params: task_id*, x_payment, purchase_id, agent_key_thumb |
get_attestation_receipt | Fetch a Proof-of-Human-Fulfillment receipt by attestation id. Returns the signed packet, verifier identifier, JWKS URL, and a how-to-verify hint. Free, no API key — pair it with check_credential to verify the signature yourself. params: attestation_id* |
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