Error Budget Audit
Measure an error budget against real counts, with exact decimal arithmetic rather than floating point. Reports the budget exhausted or mostly consumed, the objective not met, and a burn rate per interval above the sustainable one. A budget that rounds to fewer than one event is reported as carrying no information, since any failure is then a breach. Intervals are sorted by start, so the order supplied does not change the answer.
SearchLiveeip155:8453Exactvia cdp
Service level objectivesError budgetReliabilityExact arithmeticDeveloper tooling
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.
$25.35
Verified settled volume
256 settlements proven x402 by their on-chain EIP-3009 marker.
$0.220
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 08:31Z
—
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": "220000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://api.zfinia.com/x402/v1/error-budget-audit",
"tags": [
"service level objectives",
"error budget",
"reliability",
"exact arithmetic",
"developer tooling"
],
"mimeType": "application/json",
"description": "Measure an error budget against real counts, with exact decimal arithmetic rather than floating point. Reports the budget exhausted or mostly consumed, the objective not met, and a burn rate per interval above the sustainable one. A budget that rounds to fewer than one event is reported as carrying no information, since any failure is then a breach. Intervals are sorted by start, so the order supplied does not change the answer.",
"serviceName": "Error Budget Audit"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"intervals": [
{
"good": 7000,
"start": "2026-09-07T00:00:00Z",
"total": 7000
},
{
"good": 6965,
"start": "2026-09-14T00:00:00Z",
"total": 7000
},
{
"good": 6997,
"start": "2026-09-21T00:00:00Z",
"total": 7000
},
{
"good": 6998,
"start": "2026-09-28T00:00:00Z",
"total": 7000
}
],
"objective": "99.9",
"window_days": 28
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"limits": {
"maxLines": 20000,
"maxSpans": 10000,
"maxFields": 500,
"maxSamples": 20000,
"maxFindings": 500,
"maxJsonBytes": 2097152
},
"passed": false,
"complete": true,
"findings": [
{
"code": "BUDGET_EXHAUSTED",
"detail": "40 failed events against a budget of 28, which is 142.857% of it. The objective is already breached for this window."
},
{
"code": "OBJECTIVE_NOT_MET",
"detail": "The measured success rate is 99.857142% against an objective of 99.900000%."
},
{
"code": "SEVERE_BURN_INTERVAL",
"detail": "The interval starting 2026-09-14T00:00:00.000Z burns budget at 20.00 times the sustainable rate. At that rate the whole window budget is gone in 33.60 hours."
}
],
"intervals": [
{
"bad": 0,
"good": 7000,
"start": "2026-09-07T00:00:00.000Z",
"total": 7000,
"burn_rate": "0.000",
"success_rate": "1.000000"
},
{
"bad": 35,
"good": 6965,
"start": "2026-09-14T00:00:00.000Z",
"total": 7000,
"burn_rate": "20.000",
"success_rate": "0.995000"
},
{
"bad": 3,
"good": 6997,
"start": "2026-09-21T00:00:00.000Z",
"total": 7000,
"burn_rate": "1.714",
"success_rate": "0.999571"
}
],
"bad_events": 40,
"request_id": "example-request",
"service_id": "error_budget_audit",
"assumptions": [
"Every figure is exact decimal arithmetic over integers. A success rate of 99.95% against an objective of 99.9% is a difference in the fourth decimal place, and comparing those as floating point is how...",
"Intervals are sorted by their start, so the order supplied does not change the answer, and a timestamp with no UTC offset is reported because the ordering would then rest on a guess.",
"A burn rate is the budget consumed in an interval relative to the share of the window that interval represents, so a rate above one means the budget runs out before the window does."
],
"good_events": 27960,
"limitations": [
"The counts supplied. Whether good and total were measured correctly, and whether the indicator reflects user experience, are outside this.",
"within_budget is true only when the objective is met, the budget is not mostly consumed and every interval was readable. It is not a prediction about the rest of the window."
],
"observed_at": "2026-10-02T00:00:00.000Z",
"window_days": 28,
"not_examined": [],
"total_events": 28000,
"budget_events": 28,
"finding_count": 3,
"within_budget": false,
"interval_count": 4,
"service_version": "1.0.0",
"achieved_percent": "99.857142",
"findings_by_code": {
"BUDGET_EXHAUSTED": 1,
"OBJECTIVE_NOT_MET": 1,
"SEVERE_BURN_INTERVAL": 1
},
"objective_percent": "99.900000",
"budget_consumed_fraction": "1.428571"
}
}
},
"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": [
"objective",
"window_days",
"intervals"
],
"properties": {
"intervals": {
"type": "array",
"items": {
"type": "object",
"required": [
"start",
"good",
"total"
],
"properties": {
"good": {
"type": "integer",
"minimum": 0
},
"start": {
"type": [
"string",
"number"
]
},
"total": {
"type": "integer",
"minimum": 0
}
},
"additionalProperties": false
},
"maxItems": 10000,
"minItems": 1
},
"objective": {
"type": [
"string",
"number"
]
},
"window_days": {
"type": "integer",
"maximum": 365,
"minimum": 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.
0.22USDC≈ $0.22 USD
on Base · exact scheme
Pay 0.22 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
- 220000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
"amount": "220000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"intervals": [
{
"good": 7000,
"start": "2026-09-07T00:00:00Z",
"total": 7000
},
{
"good": 6965,
"start": "2026-09-14T00:00:00Z",
"total": 7000
},
{
"good": 6997,
"start": "2026-09-21T00:00:00Z",
"total": 7000
},
{
"good": 6998,
"start": "2026-09-28T00:00:00Z",
"total": 7000
}
],
"objective": "99.9",
"window_days": 28
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"limits": {
"maxLines": 20000,
"maxSpans": 10000,
"maxFields": 500,
"maxSamples": 20000,
"maxFindings": 500,
"maxJsonBytes": 2097152
},
"passed": false,
"complete": true,
"findings": [
{
"code": "BUDGET_EXHAUSTED",
"detail": "40 failed events against a budget of 28, which is 142.857% of it. The objective is already breached for this window."
},
{
"code": "OBJECTIVE_NOT_MET",
"detail": "The measured success rate is 99.857142% against an objective of 99.900000%."
},
{
"code": "SEVERE_BURN_INTERVAL",
"detail": "The interval starting 2026-09-14T00:00:00.000Z burns budget at 20.00 times the sustainable rate. At that rate the whole window budget is gone in 33.60 hours."
}
],
"intervals": [
{
"bad": 0,
"good": 7000,
"start": "2026-09-07T00:00:00.000Z",
"total": 7000,
"burn_rate": "0.000",
"success_rate": "1.000000"
},
{
"bad": 35,
"good": 6965,
"start": "2026-09-14T00:00:00.000Z",
"total": 7000,
"burn_rate": "20.000",
"success_rate": "0.995000"
},
{
"bad": 3,
"good": 6997,
"start": "2026-09-21T00:00:00.000Z",
"total": 7000,
"burn_rate": "1.714",
"success_rate": "0.999571"
}
],
"bad_events": 40,
"request_id": "example-request",
"service_id": "error_budget_audit",
"assumptions": [
"Every figure is exact decimal arithmetic over integers. A success rate of 99.95% against an objective of 99.9% is a difference in the fourth decimal place, and comparing those as floating point is how...",
"Intervals are sorted by their start, so the order supplied does not change the answer, and a timestamp with no UTC offset is reported because the ordering would then rest on a guess.",
"A burn rate is the budget consumed in an interval relative to the share of the window that interval represents, so a rate above one means the budget runs out before the window does."
],
"good_events": 27960,
"limitations": [
"The counts supplied. Whether good and total were measured correctly, and whether the indicator reflects user experience, are outside this.",
"within_budget is true only when the objective is met, the budget is not mostly consumed and every interval was readable. It is not a prediction about the rest of the window."
],
"observed_at": "2026-10-02T00:00:00.000Z",
"window_days": 28,
"not_examined": [],
"total_events": 28000,
"budget_events": 28,
"finding_count": 3,
"within_budget": false,
"interval_count": 4,
"service_version": "1.0.0",
"achieved_percent": "99.857142",
"findings_by_code": {
"BUDGET_EXHAUSTED": 1,
"OBJECTIVE_NOT_MET": 1,
"SEVERE_BURN_INTERVAL": 1
},
"objective_percent": "99.900000",
"budget_consumed_fraction": "1.428571"
}
}
},
"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": [
"objective",
"window_days",
"intervals"
],
"properties": {
"intervals": {
"type": "array",
"items": {
"type": "object",
"required": [
"start",
"good",
"total"
],
"properties": {
"good": {
"type": "integer",
"minimum": 0
},
"start": {
"type": [
"string",
"number"
]
},
"total": {
"type": "integer",
"minimum": 0
}
},
"additionalProperties": false
},
"maxItems": 10000,
"minItems": 1
},
"objective": {
"type": [
"string",
"number"
]
},
"window_days": {
"type": "integer",
"maximum": 365,
"minimum": 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 08:32Z
- Last indexed by Roundhouse
- 2026-10-05 18:40Z
- Last enriched (probe, favicon, geo)
- 2026-10-05 09:45Z
- 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
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 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 Error Budget Audit 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=Error%20Budget%20Audit' 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/error-budget-audit, 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.