Signed attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of on-chain w
Signed attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of on-chain wallet conditions across 37 chains: token balance, NFT ownership, EAS, Farcaster, view calls, ratio rules, and agent standing (ERC-8004 registration, ERC-7710 delegation validity with revocation proof). A verifiable boolean, never raw balances. Up to 10 conditions per pay-per-call request. Pay in USDC on Base, Polygon, Arbitrum, Arc, or Solana.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
697 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.insumermodel.com/v1/attest
| Category | Market data |
|---|---|
| Provider host | api.insumermodel.com |
| Networks | eip155:137, eip155:42161, eip155:5042, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 19 from 6 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.05 | 697 ms |
Example input (from the provider)
{
"body": {
"conditions": [
{
"chainId": 8453,
"contractAddress": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"threshold": "1",
"type": "token_balance"
}
],
"wallet": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"body": {
"properties": {
"conditions": {
"items": {
"properties": {
"chainId": {
"description": "Numeric EVM chain id, or 'solana' | 'xrpl' | 'bitcoin' | 'tron' | 'stellar' | 'sui'"
},
"contractAddress": {
"type": "string"
},
"threshold": {
"description": "Decimal string in token/display units, not base units: \"1000\" means 1000 USDC",
"type": "string"
},
"type": {
"enum": [
"token_balance",
"nft_ownership",
"eas_attestation",
"farcaster_id",
"evm_view_call",
"ratio_to_amount",
"ratio_to_supply",
"erc8004_agent",
"erc7710_delegation"
],
"type": "string"
}
},
"required": [
"type",
"chainId"
],
"type": "object"
},
"maxItems": 10,
"minItems": 1,
"type": "array"
},
"format": {
"description": "Optional ES256 JWT attestation format",
"enum": [
"jwt"
],
"type": "string"
},
"proof": {
"description": "Optional EIP-1186 storage proof; doubles the price",
"enum": [
"merkle"
],
"type": "string"
},
"wallet": {
"description": "EVM address (0x\u2026); non-EVM wallets via solanaWallet/xrplWallet/bitcoinWallet/tronWallet/stellarWallet/suiWallet",
"type": "string"
}
},
"required": [
"wallet",
"conditions"
],
"type": "object"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}