> Three ways to pay: a free tier (10 verifications plus 100 requests a day), prepaid from $0.04 a call down to $0.02, or x402 on demand from $0.05 a call, no key. > > Page: https://insumermodel.com/pricing/ · API: https://api.insumermodel.com · OpenAPI: https://insumermodel.com/openapi.json · Index for agents: https://insumermodel.com/llms.txt # Simple, Transparent Pricing Three ways to pay: a free tier to get started, prepaid credits by card or crypto from any country with volume discounts, or x402 on demand, paid per call with no key. ## Choose Your Tier Each tier includes monthly credits and sets your daily rate limit. Pay with card. ### Free $0 100 requests / day - 10 verification credits - All endpoints, 37 blockchains - Attestations signed with ECDSA and post-quantum ML-DSA-65, plus Merkle proofs - Development & testing [Get Free Key](https://insumermodel.com/developers/?tier=free) Most Popular ### Pro $29/mo 1,000 verification credits / mo - All endpoints, 37 blockchains - Attestations signed with ECDSA and post-quantum ML-DSA-65, plus Merkle proofs - Production applications - Top up anytime at $0.029/credit [Subscribe: $29/mo](https://insumermodel.com/developers/?tier=pro) Renews automatically at $29 every month until you cancel. Cancel anytime with Manage Billing on your [account page](https://insumermodel.com/developers/account/); cancellation takes effect at the end of the current billing period, with no partial refund. See the [Terms of Service](https://insumermodel.com/terms-of-service/#automatic-renewal). ### Enterprise $99/mo 5,000 verification credits / mo - All endpoints, 37 blockchains - Attestations signed with ECDSA and post-quantum ML-DSA-65, plus Merkle proofs - High-volume integrations - Top up anytime at $0.02/credit [Subscribe: $99/mo](https://insumermodel.com/developers/?tier=enterprise) Renews automatically at $99 every month until you cancel. Cancel anytime with Manage Billing on your [account page](https://insumermodel.com/developers/account/); cancellation takes effect at the end of the current billing period, with no partial refund. See the [Terms of Service](https://insumermodel.com/terms-of-service/#automatic-renewal). Every request made with your key counts toward the daily limit. GET requests (reads) are **free**: credits are consumed only by the POST endpoints listed under per-call costs below. ## Buy Credits with Crypto Top up your API key directly on-chain. Larger deposits unlock lower per-call rates. Paid in USDC on Ethereum, Base, Polygon, Arbitrum, Optimism, BNB Chain, Avalanche, and Solana.* No billing country, no currency conversion: USDC top-ups work the same from anywhere. $5 – $99 $0.04/call 25 credits per $1 Best Value $100 – $499 $0.03/call 33 credits per $1 25% off $500+ $0.02/call 50 credits per $1 50% off Send USDC to the platform wallet for that chain (the address depends on the chain), then call `POST /v1/credits/buy` with your transaction hash. The first purchase on a key, or a change of paying wallet, also carries a signature from the wallet that paid (`senderSignature`). Credits are added instantly after on-chain verification. Bitcoin, Tron and USDT are not accepted for purchases. **USDC on Ethereum, Base, Polygon, Arbitrum, Optimism or Avalanche:** `0xee432065474D2C852700f74e3fD81e2Bcc16a3D4` **USDC on BNB Chain:** `0xAd982CB19aCCa2923Df8F687C0614a7700255a23` **USDC on Solana:** `8fyEGM5tRjMocKQWaVXyM2XvvnTxR3sWdrYtug2zeLX4` *Crypto sent on unsupported chains or to the wrong address cannot be recovered. All crypto credit purchases are final and non-refundable. ## No Key at All: Pay Per Call Built for agents. Send a request with no credentials and the API answers with an x402 quote. Pay in USDC on Base, Polygon, Arbitrum, Arc, or Solana, 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). POST /v1/attest $0.05/call $0.10 with Merkle proof POST /v1/trust $0.15/call $0.30 with Merkle proofs POST /v1/trust/batch $0.15/wallet $0.30 with Merkle proofs Standard [x402 protocol](https://www.x402.org/), USDC on Base, Polygon, Arbitrum, Arc, 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](https://insumermodel.com/developers/api-reference/#auth). ## What Each Endpoint Costs 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, ACP, UCP (per code with a discount) | 1* | $0.04 | $0.02 | * A code that carries a discount is paid with one credit from the **API key that owns the store** (the key that created it); a 0% result is free. A caller using another key is not charged. NFC taps cost the same, and every in-store scan costs one credit. Running a store, club or community? [Skye Meta](https://skyemeta.com/recognition/) runs recognition at the counter, online and at the door on InsumerAPI, under its own license, and its stores are covered by that license. ## One Credit Balance #### Your API Key Credits belong to your **API key**. Consumed by attestation and trust endpoints. `POST /v1/keys/create` (email signup) ships **10 free verifications plus 100 requests a 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`. #### Stores You Create A store has **no balance of its own**. A discount code (verify, ACP, UCP) or NFC tap that carries a discount uses one credit from the API key that created the store; a 0% result is free. Every in-store scan uses one credit from that key. A caller using another key is not charged; if you call with your own store's key, your key pays. Top up the same way, with `POST /v1/credits/buy`. [Get Your API Key](https://insumermodel.com/developers/?tier=free) [View API Docs](https://insumermodel.com/developers/api-reference/)