Enzyme-kinetics fit
Fit supplied substrate/rate pairs by reciprocal Lineweaver-Burk OLS; report Km, Vmax and residuals. Exposes noise bias; no parameter confidence interval.
InfraLiveeip155:8453Exactvia cdp
ChemistryScienceCalculatorBounded-computationEvidence
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 20 snapshots so far.
$71.48
Verified settled volume
1,272 settlements proven x402 by their on-chain EIP-3009 marker.
$0.169
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-12 05:17Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xec84c1cd6602bbe387bc8e6f0d3c062f2762de28The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.169USDC≈ $0.169 USD
on Base · exact scheme
Pay 0.169 USDC on Base to 0xec84…2de28. The signed payment is good for 1 minute.
- Paid to
- 0xec84…2de28
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 169000 smallest units
169000units
on Arbitrum · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0xec84…2de28
- Token contract
- 0xaf88…e5831
- Payment window
- 1 minute
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xec84c1cd6602bbe387bc8e6f0d3c062f2762de28",
"amount": "169000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xec84c1cd6602bbe387bc8e6f0d3c062f2762de28",
"amount": "169000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"velocity": [
3.3333333333333335,
5,
6.666666666666667,
8
],
"dataClass": "synthetic",
"substrate": [
1,
2,
4,
8
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"result": {
"findings": {
"Km": 2,
"Vmax": 10,
"method": "Lineweaver-Burk unweighted reciprocal OLS; low-substrate noise a…",
"residuals": [
0
],
"transformedFit": {
"slope": 0.2,
"rSquared": 1,
"intercept": 0.1,
"residuals": [
-5.55111512313e-17
],
"degreesOfFreedom": 2,
"slopeStandardError": 6.54773818076e-17,
"residualStandardError": 4.38854183572e-17
},
"parameterConfidenceInterval": null
},
"limitations": [
"Public or synthetic research inputs only; no patient, personal g…"
],
"methodVersion": "maha-science50/1.0.0",
"numericPrecision": "IEEE754-double; finite outputs rounded to 12 significant digits"
},
"offerId": "chemistry-enzyme-kinetics-fit",
"version": "maha-microproducts/0.1",
"boundaries": [
"Public or synthetic inputs only. Caller labels are declarations,…"
],
"inputDigest": "sha256:8987952611c1b0692cfe27c718e5f3b3def1d1dc1fee3415fc68903c2…",
"receiptDigest": "sha256:918df90db474d104ec62803a9424b408a0cd8cc876fd887274ae8288b…",
"amountBaseUnits": "169000"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"dataClass",
"substrate",
"velocity"
],
"properties": {
"velocity": {
"type": "array",
"maxItems": 128,
"minItems": 1
},
"dataClass": {
"enum": [
"public",
"synthetic"
],
"type": "string"
},
"substrate": {
"type": "array",
"maxItems": 128,
"minItems": 1
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"version",
"offerId",
"amountBaseUnits",
"inputDigest",
"result",
"boundaries",
"receiptDigest"
],
"properties": {
"result": {
"type": "object"
},
"offerId": {
"enum": [
"chemistry-enzyme-kinetics-fit"
],
"type": "string"
},
"version": {
"enum": [
"maha-microproducts/0.1"
],
"type": "string"
},
"boundaries": {
"type": "array",
"maxItems": 128,
"minItems": 0
},
"inputDigest": {
"type": "string",
"maxLength": 71
},
"receiptDigest": {
"type": "string",
"maxLength": 71
},
"amountBaseUnits": {
"enum": [
"169000"
],
"type": "string"
}
},
"additionalProperties": false
}
}
}
}
}
},
"maha-offer": {
"asset": "USDC",
"amount": "169000",
"method": "POST",
"status": "available",
"network": "eip155:8453",
"offerId": "chemistry-enzyme-kinetics-fit",
"networks": [
"eip155:8453",
"eip155:42161"
],
"assetDecimals": 6,
"declarationUrl": "https://www.mahastrategies.com/api/discovery/x402-offers/chemistry-enzyme-kinetics-fit",
"maxRequestBytes": 32768,
"canonicalResource": "https://www.mahastrategies.com/api/v1/micro/chemistry-enzyme-kinetics-fit",
"declarationInline": "compact",
"payableInProduction": true,
"fullSourceTextStored": false,
"verbatimExcerptsRetained": false
},
"declaration-integrity": {
"metadataVersion": "2026-08-10",
"canonicalResource": "https://www.mahastrategies.com/api/v1/micro/chemistry-enzyme-kinetics-fit",
"declarationDigest": "sha256:8ae28f497260cb369c6d9c277b9317f9ae976716f733f2b631c9b00306bf6e2a"
}
}Provenance
- Seen in the source catalog
- 2026-10-12 05:17Z
- Last indexed by Roundhouse
- 2026-10-26 20:20Z
- Last enriched (probe, favicon, geo)
- 2026-10-12 06:16Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 200
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 20 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Enzyme-kinetics fit and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Enzyme-kinetics%20fit' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://www.mahastrategies.com/api/v1/micro/chemistry-enzyme-kinetics-fit, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.