402utils.com
Row-level diff of two CSVs (a→b) — reconcile two exports. With `key` (a column name, or a column index when header:false), rows pair by key → added / removed / changed (per-field old→new). Without a key, a whole-row multiset diff gives added/removed only. Delimiter auto-detected (, ; tab |); tolerant RFC-4180 parsing. First row is the header unless header:false. Max 5 MB per input; reported buckets cap at 10000.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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.
Pay 0.003 USDC on Base to 0xc55A…9C291. The signed payment is good for 1 minute.
- Paid to
- 0xc55A…9C291
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 3000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc55A2D530b53CBaD1001e4AfD4720B7E71f9C291",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"a": "id,qty\n1,10\n2,5\n",
"b": "id,qty\n1,12\n3,7\n",
"key": "id"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"key": "id",
"added": [
{
"id": "3",
"qty": "7"
}
],
"keyed": true,
"changed": [
{
"key": "1",
"fields": {
"qty": {
"a": "10",
"b": "12"
}
}
}
],
"headers": {
"a": [
"id",
"qty"
],
"b": [
"id",
"qty"
]
},
"removed": [
{
"id": "2",
"qty": "5"
}
],
"summary": {
"added": 1,
"changed": 1,
"removed": 1,
"unchanged": 0
},
"delimiter": {
"a": ",",
"b": ","
}
}
}
},
"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": [
"a",
"b"
],
"properties": {
"a": {
"type": "string",
"description": "Original CSV (max 5 MB UTF-8)."
},
"b": {
"type": "string",
"description": "New CSV (max 5 MB UTF-8)."
},
"key": {
"type": "string",
"description": "Column name (header mode) or column index like \"0\" (header:false) to pair rows by. Omit for a keyless whole-row diff."
},
"header": {
"type": "boolean",
"default": true,
"description": "Treat the first row as a header. When false, rows are arrays and key is an index."
}
},
"description": "Two CSV strings and an optional key column."
},
"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": [
"keyed",
"key",
"delimiter",
"headers",
"added",
"removed",
"changed",
"summary"
],
"properties": {
"key": {
"type": [
"string",
"null"
],
"description": "The key column used, or null."
},
"added": {
"type": "array",
"description": "Rows present in b but not a (objects in header mode, arrays otherwise)."
},
"keyed": {
"type": "boolean",
"description": "True when rows were paired by a key."
},
"changed": {
"type": "array",
"items": {
"type": "object"
},
"description": "Keyed mode only: rows whose fields differ. Each: {key, fields:{col:{a,b}}}."
},
"headers": {
"type": "object",
"description": "Header names for each input (null in header:false mode)."
},
"removed": {
"type": "array",
"description": "Rows present in a but not b."
},
"summary": {
"type": "object",
"description": "Counts: {added, removed, changed, unchanged?, duplicateKeys?}."
},
"delimiter": {
"type": "object",
"description": "Detected delimiter for each input ({a, b})."
},
"truncated": {
"type": "boolean",
"description": "True when any bucket was capped at 10000 entries."
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-07-06 16:28Z
- Last indexed by Roundhouse
- 2026-07-06 18:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-14 02:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 404
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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service 402utils.com 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=402utils.com' 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://402utils.com/v1/csv-diff, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.