DNS Record Diff
Compare two DNS zone snapshots and report what the change does. Losing the last record of a type at a name stops something resolving once caches expire, and losing one value out of several does not, so the two are separated. A value change at one name is reported as a change rather than as an unrelated removal and addition. A TTL change is reported for its own reason: the old TTL governs how long the old answer survives, so a new one does not take effect until the old has expired.
InfraLiveeip155:8453Exactvia cdp
DnsChange detectionInfrastructureDeveloper toolingRelease gate
Settlements · 30d
219↓ 38%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$25.35
Verified settled volume
256 settlements proven x402 by their on-chain EIP-3009 marker.
$0.160
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 2026-10-04 08:43Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x25e8245f07d5e4873987293dad666afbe56a9608The 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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
"amount": "160000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://api.zfinia.com/x402/v1/dns-record-diff",
"tags": [
"dns",
"change detection",
"infrastructure",
"developer tooling",
"release gate"
],
"mimeType": "application/json",
"description": "Compare two DNS zone snapshots and report what the change does. Losing the last record of a type at a name stops something resolving once caches expire, and losing one value out of several does not, so the two are separated. A value change at one name is reported as a change rather than as an unrelated removal and addition. A TTL change is reported for its own reason: the old TTL governs how long the old answer survives, so a new one does not take effect until the old has expired.",
"serviceName": "DNS Record Diff"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"zone": "example.test",
"after": [
{
"ttl": 300,
"name": "example.test",
"type": "A",
"value": "203.0.113.99"
},
{
"ttl": 3600,
"name": "example.test",
"type": "MX",
"value": "10 mx1.vendor.test"
},
{
"ttl": 3600,
"name": "status.example.test",
"type": "CNAME",
"value": "pages.vendor.test"
}
],
"before": [
{
"ttl": 3600,
"name": "example.test",
"type": "A",
"value": "203.0.113.10"
},
{
"ttl": 3600,
"name": "example.test",
"type": "MX",
"value": "10 mx1.vendor.test"
},
{
"ttl": 3600,
"name": "example.test",
"type": "MX",
"value": "20 mx2.vendor.test"
},
{
"ttl": 3600,
"name": "_dmarc.example.test",
"type": "TXT",
"value": "v=DMARC1; p=none; rua=mailto:d@example.test"
}
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"zone": "example.test",
"limits": {
"maxRecords": 2000,
"maxFindings": 500,
"maxHeaderBytes": 131072,
"maxIncludeTree": 200,
"spfLookupLimit": 10,
"maxRecordLength": 4096,
"spfVoidLookupLimit": 2
},
"passed": false,
"complete": false,
"findings": [
{
"code": "RECORD_VALUE_CHANGED",
"name": "example.test",
"type": "A",
"detail": "example.test A changed from 203.0.113.10 to 203.0.113.99."
},
{
"code": "RECORD_REMOVED_FROM_SET",
"name": "example.test",
"type": "MX",
"detail": "example.test MX lost the value 20 mx2.vendor.test, and 1 other value(s) remain."
},
{
"code": "RECORD_SET_REMOVED",
"name": "_dmarc.example.test",
"type": "TXT",
"detail": "_dmarc.example.test no longer has any TXT record. Whatever depended on it stops resolving once caches expire."
}
],
"unchanged": false,
"request_id": "example-request",
"service_id": "dns_record_diff",
"added_count": 2,
"assumptions": [
"A record is identified by its name, type and value together, so a value change at one name is reported as a change rather than as an unrelated removal and addition.",
"Losing the last record of a type at a name is separated from losing one value out of several, because only the first stops something resolving.",
"A TTL change is reported because the old TTL governs how long the old answer survives, so a TTL change made alongside a value change does not take effect until the old one expires."
],
"limitations": [
"The two snapshots supplied. Nothing resolves DNS, so what any resolver currently holds in cache is outside this.",
"unchanged is true only when the two snapshots were identical."
],
"observed_at": "2026-10-02T00:00:00.000Z",
"not_examined": [
"RECORD_SET_ADDED: status.example.test gained its first CNAME record, which breaks nothing that already resolved."
],
"finding_count": 3,
"removed_count": 3,
"service_version": "1.0.0",
"findings_by_code": {
"RECORD_SET_REMOVED": 1,
"RECORD_VALUE_CHANGED": 1,
"RECORD_REMOVED_FROM_SET": 1
},
"removed_set_count": 1,
"after_record_count": 3,
"before_record_count": 4
}
}
},
"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": [
"zone",
"before",
"after"
],
"properties": {
"zone": {
"type": "string",
"maxLength": 253
},
"after": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"type",
"value"
],
"properties": {
"ttl": {
"type": "integer",
"minimum": 0
},
"name": {
"type": "string",
"maxLength": 253
},
"type": {
"type": "string",
"maxLength": 16
},
"value": {
"type": "string",
"maxLength": 4096
}
},
"additionalProperties": false
},
"maxItems": 2000,
"minItems": 1
},
"before": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"type",
"value"
],
"properties": {
"ttl": {
"type": "integer",
"minimum": 0
},
"name": {
"type": "string",
"maxLength": 253
},
"type": {
"type": "string",
"maxLength": 16
},
"value": {
"type": "string",
"maxLength": 4096
}
},
"additionalProperties": false
},
"maxItems": 2000,
"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"
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.16USDC≈ $0.16 USD
on Base · exact scheme
Pay 0.16 USDC on Base to 0x25e8…a9608. The signed payment is good for 1 minute.
- Paid to
- 0x25e8…a9608
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 160000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
"amount": "160000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"zone": "example.test",
"after": [
{
"ttl": 300,
"name": "example.test",
"type": "A",
"value": "203.0.113.99"
},
{
"ttl": 3600,
"name": "example.test",
"type": "MX",
"value": "10 mx1.vendor.test"
},
{
"ttl": 3600,
"name": "status.example.test",
"type": "CNAME",
"value": "pages.vendor.test"
}
],
"before": [
{
"ttl": 3600,
"name": "example.test",
"type": "A",
"value": "203.0.113.10"
},
{
"ttl": 3600,
"name": "example.test",
"type": "MX",
"value": "10 mx1.vendor.test"
},
{
"ttl": 3600,
"name": "example.test",
"type": "MX",
"value": "20 mx2.vendor.test"
},
{
"ttl": 3600,
"name": "_dmarc.example.test",
"type": "TXT",
"value": "v=DMARC1; p=none; rua=mailto:d@example.test"
}
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"zone": "example.test",
"limits": {
"maxRecords": 2000,
"maxFindings": 500,
"maxHeaderBytes": 131072,
"maxIncludeTree": 200,
"spfLookupLimit": 10,
"maxRecordLength": 4096,
"spfVoidLookupLimit": 2
},
"passed": false,
"complete": false,
"findings": [
{
"code": "RECORD_VALUE_CHANGED",
"name": "example.test",
"type": "A",
"detail": "example.test A changed from 203.0.113.10 to 203.0.113.99."
},
{
"code": "RECORD_REMOVED_FROM_SET",
"name": "example.test",
"type": "MX",
"detail": "example.test MX lost the value 20 mx2.vendor.test, and 1 other value(s) remain."
},
{
"code": "RECORD_SET_REMOVED",
"name": "_dmarc.example.test",
"type": "TXT",
"detail": "_dmarc.example.test no longer has any TXT record. Whatever depended on it stops resolving once caches expire."
}
],
"unchanged": false,
"request_id": "example-request",
"service_id": "dns_record_diff",
"added_count": 2,
"assumptions": [
"A record is identified by its name, type and value together, so a value change at one name is reported as a change rather than as an unrelated removal and addition.",
"Losing the last record of a type at a name is separated from losing one value out of several, because only the first stops something resolving.",
"A TTL change is reported because the old TTL governs how long the old answer survives, so a TTL change made alongside a value change does not take effect until the old one expires."
],
"limitations": [
"The two snapshots supplied. Nothing resolves DNS, so what any resolver currently holds in cache is outside this.",
"unchanged is true only when the two snapshots were identical."
],
"observed_at": "2026-10-02T00:00:00.000Z",
"not_examined": [
"RECORD_SET_ADDED: status.example.test gained its first CNAME record, which breaks nothing that already resolved."
],
"finding_count": 3,
"removed_count": 3,
"service_version": "1.0.0",
"findings_by_code": {
"RECORD_SET_REMOVED": 1,
"RECORD_VALUE_CHANGED": 1,
"RECORD_REMOVED_FROM_SET": 1
},
"removed_set_count": 1,
"after_record_count": 3,
"before_record_count": 4
}
}
},
"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": [
"zone",
"before",
"after"
],
"properties": {
"zone": {
"type": "string",
"maxLength": 253
},
"after": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"type",
"value"
],
"properties": {
"ttl": {
"type": "integer",
"minimum": 0
},
"name": {
"type": "string",
"maxLength": 253
},
"type": {
"type": "string",
"maxLength": 16
},
"value": {
"type": "string",
"maxLength": 4096
}
},
"additionalProperties": false
},
"maxItems": 2000,
"minItems": 1
},
"before": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"type",
"value"
],
"properties": {
"ttl": {
"type": "integer",
"minimum": 0
},
"name": {
"type": "string",
"maxLength": 253
},
"type": {
"type": "string",
"maxLength": 16
},
"value": {
"type": "string",
"maxLength": 4096
}
},
"additionalProperties": false
},
"maxItems": 2000,
"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"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-04 08:43Z
- Last indexed by Roundhouse
- 2026-10-05 00:20Z
- Last enriched (probe, favicon, geo)
- 2026-10-05 00:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 402
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 DNS Record Diff 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=DNS%20Record%20Diff' 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://api.zfinia.com/x402/v1/dns-record-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. 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.