Free tier to get started. Pay per verification with card or USDC, from any country. Volume discounts for high-throughput integrations.
Each tier includes monthly credits and sets your daily rate limit. Pay with card.
GET requests (reads) use the daily limit and are free. Credits are only consumed by POST endpoints that write verifications.
Top up your API key directly on-chain. Larger deposits unlock lower per-call rates. USDC and USDT accepted on Ethereum, Base, Polygon, Arbitrum, Optimism, BNB Chain, Avalanche, and Solana. BTC accepted on Bitcoin.* No billing country, no currency conversion: stablecoin top-ups work the same from anywhere.
Send USDC, USDT, or BTC to the platform wallet on any supported chain above, then call POST /v1/credits/buy with your transaction hash. Credits are added instantly after on-chain verification. BTC is converted to USD at the market rate.
EVM: 0xAd982CB19aCCa2923Df8F687C0614a7700255a23
Solana: 6a1mLjefhvSJX1sEX8PTnionbE9DqoYjU6F6bNkT4Ydr
Bitcoin: bc1qg7qnerdhlmdn899zemtez5tcx2a2snc0dt9dt0
*Crypto sent on unsupported chains or to the wrong address cannot be recovered.
All crypto credit purchases are final and non-refundable.
Built for agents. Send a request with no credentials and the API answers with an x402 quote. Sign a USDC authorization on Base, retry, and the attestation comes back with settlement on-chain. No signup, no key, no credit balance to manage. Every condition type is on this rail, including agent standing (ERC-8004 registration and ERC-7710 delegation validity).
Standard x402 protocol, USDC on Base, Polygon, Arbitrum, or Solana, gasless for the payer. x402 moves the money; InsumerAPI checks the conditions. Prepaid credits stay cheaper at volume; pay per call is the zero-setup path. Details in the authentication reference.
Credits are consumed by POST endpoints that perform on-chain verification. Dollar amounts shown at the base rate ($0.04/credit).
| Endpoint | Credits | Base Cost | At $500+ Rate |
|---|---|---|---|
| POST /v1/attest | 1 | $0.04 | $0.02 |
| POST /v1/attest (Merkle proof) | 2 | $0.08 | $0.04 |
| POST /v1/trust | 3 | $0.12 | $0.06 |
| POST /v1/trust (Merkle proof) | 6 | $0.24 | $0.12 |
| POST /v1/trust/batch (per wallet) | 3 | $0.12 | $0.06 |
| POST /v1/verify, /v1/codes, ACP, UCP | 1* | See merchant packages below | |
* Commerce endpoints consume merchant credits (per-merchant pool), not API key credits. All other endpoints consume API credits (per-key pool).
For merchants running condition-based discounts, QR/NFC verification, and commerce protocol integrations. Buy via dashboard (card) or POST /v1/merchants/{id}/credits (USDC at $0.04/credit flat).
| Package | Credits | Price | Per Credit |
|---|---|---|---|
| Basic | 500 | $20 | $0.04 |
| Standard | 2,000 | $40 | $0.02 |
| Pro | 5,000 | $75 | $0.015 |
Belong to your API key. Consumed by attestation and trust endpoints. POST /v1/keys/create (email signup) ships 10 free verifications plus 100 reads/day. POST /v1/keys/buy (on-chain, sender wallet is the identity, no email) ships the credits you paid for. Top up via subscription tier or POST /v1/credits/buy.
Belong to each merchant account. Consumed by commerce endpoints (verify, codes, ACP, UCP). Purchased separately via POST /v1/merchants/{id}/credits.