OpenAPI Status Drift
See how declared response statuses changed per operation, and which operations are missing the statuses you require. Reports statuses added and removed, operations declaring no 2xx response at all, and responses with no description. Useful when a client has exhaustive error handling that a silently added status will fall through.
OtherLiveeip155:8453Exactvia cdp
OpenapiStatus codesError contractChange detectionDeveloper tooling
Settlements · 30d
219↓ 44%
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.
$0.090
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-04 07:54Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x25e8245f07d5e4873987293dad666afbe56a9608The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://api.zfinia.com/x402/v1/openapi-status-code-contract-drift",
"tags": [
"openapi",
"status codes",
"error contract",
"change detection",
"developer tooling"
],
"mimeType": "application/json",
"description": "See how declared response statuses changed per operation, and which operations are missing the statuses you require. Reports statuses added and removed, operations declaring no 2xx response at all, and responses with no description. Useful when a client has exhaustive error handling that a silently added status will fall through.",
"serviceName": "OpenAPI Status Drift"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"after": {
"info": {
"title": "Orders API",
"version": "2.0.0"
},
"paths": {
"/orders": {
"get": {
"summary": "List orders",
"responses": {
"200": {
"content": {
"application/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Order"
}
}
}
},
"description": "A page of orders"
}
},
"parameters": [
{
"in": "query",
"name": "tenant",
"schema": {
"type": "string"
},
"required": true
}
],
"operationId": "listOrdersV2"
},
"post": {
"summary": "Create an order",
"responses": {
"201": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"description": "Created"
}
},
"operationId": "createOrder",
"requestBody": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"required": true
}
},
"parameters": [
{
"in": "query",
"name": "page",
"schema": {
"type": "integer",
"minimum": 1
}
}
]
},
"/orders/{id}": {
"get": {
"summary": "Fetch one order",
"responses": {
"200": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"description": "The order"
},
"404": {
"description": "Not found"
}
},
"deprecated": true,
"parameters": [
{
"in": "path",
"name": "id",
"schema": {
"type": "string"
}
}
],
"operationId": "getOrder"
}
}
},
"openapi": "3.1.0",
"security": [
{
"apiKey": []
}
],
"components": {
"schemas": {
"Order": {
"type": "object",
"required": [
"id",
"total",
"tenant_id"
],
"properties": {
"id": {
"type": "string"
},
"total": {
"type": "number"
},
"status": {
"enum": [
"open",
"shipped",
"disputed"
],
"type": "string"
},
"tenant_id": {
"type": "string"
}
}
}
},
"securitySchemes": {
"apiKey": {
"in": "query",
"name": "api_key",
"type": "apiKey"
}
}
}
},
"before": {
"info": {
"title": "Orders API",
"version": "1.4.0"
},
"paths": {
"/orders": {
"get": {
"summary": "List orders",
"responses": {
"200": {
"content": {
"application/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Order"
}
}
}
},
"description": "A page of orders"
},
"429": {
"description": "Rate limited"
}
},
"operationId": "listOrders"
},
"post": {
"summary": "Create an order",
"responses": {
"201": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"description": "Created"
}
},
"operationId": "createOrder",
"requestBody": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
}
}
},
"parameters": [
{
"in": "query",
"name": "page",
"schema": {
"type": "integer",
"minimum": 1
}
}
]
},
"/orders/{id}": {
"get": {
"summary": "Fetch one order",
"responses": {
"200": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"description": "The order"
},
"404": {
"description": "Not found"
}
},
"parameters": [
{
"in": "path",
"name": "id",
"schema": {
"type": "string"
}
}
],
"operationId": "getOrder"
}
},
"/legacy/export": {
"get": {
"summary": "Legacy export",
"responses": {
"200": {
"description": "A CSV export"
}
},
"operationId": "legacyExport"
}
}
},
"openapi": "3.1.0",
"security": [
{
"apiKey": []
}
],
"components": {
"schemas": {
"Order": {
"type": "object",
"required": [
"id",
"total"
],
"properties": {
"id": {
"type": "string"
},
"total": {
"type": "number"
},
"status": {
"enum": [
"open",
"shipped"
],
"type": "string"
},
"legacy_ref": {
"type": "string"
}
}
}
},
"securitySchemes": {
"apiKey": {
"in": "header",
"name": "X-Api-Key",
"type": "apiKey"
}
}
}
},
"require_error_statuses": [
500
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"limits": {
"maxFindings": 500,
"maxOperations": 500,
"maxClientOperations": 200,
"maxRequestBodyBytes": 262144
},
"stable": false,
"complete": true,
"findings": [
{
"code": "STATUS_REMOVED",
"detail": "GET /orders: status 429 is no longer declared, so a client handling it has no contract for it.",
"status": "429",
"operation": "GET /orders"
},
{
"code": "REQUIRED_ERROR_STATUS_MISSING",
"detail": "GET /orders does not declare status 500, which was required of every operation.",
"status": "500",
"operation": "GET /orders"
},
{
"code": "REQUIRED_ERROR_STATUS_MISSING",
"detail": "POST /orders does not declare status 500, which was required of every operation.",
"status": "500",
"operation": "POST /orders"
}
],
"request_id": "example-request",
"service_id": "openapi_status_code_contract_drift",
"assumptions": [
"A required error status counts as declared when the operation declares it exactly, as a range, or through default.",
"Operations present in only one document are left to openapi_endpoint_inventory_diff rather than reported twice."
],
"limitations": [
"Declared response statuses only. What the implementation actually returns is not knowable from a document.",
"stable is true only when both documents were read in full and no operation gained, lost or under-described a status."
],
"observed_at": "2026-10-02T00:00:00.000Z",
"not_examined": [],
"finding_count": 4,
"service_version": "1.0.0",
"findings_by_code": {
"STATUS_REMOVED": 1,
"REQUIRED_ERROR_STATUS_MISSING": 3
},
"operations_compared": 3,
"operations_with_status_change": 1
}
}
},
"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": [
"before",
"after"
],
"properties": {
"after": {
"type": "object"
},
"before": {
"type": "object"
},
"require_error_statuses": {
"type": "array",
"items": {
"type": "integer",
"maximum": 599,
"minimum": 100
},
"maxItems": 20,
"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.
0.09USDC≈ $0.09 USD
on Base · exact scheme
Pay 0.09 USDC on Base to 0x25e8…a9608. The signed payment is good for 1 minute.
- Paid to
- 0x25e8…a9608
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 90000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
"amount": "90000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"after": {
"info": {
"title": "Orders API",
"version": "2.0.0"
},
"paths": {
"/orders": {
"get": {
"summary": "List orders",
"responses": {
"200": {
"content": {
"application/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Order"
}
}
}
},
"description": "A page of orders"
}
},
"parameters": [
{
"in": "query",
"name": "tenant",
"schema": {
"type": "string"
},
"required": true
}
],
"operationId": "listOrdersV2"
},
"post": {
"summary": "Create an order",
"responses": {
"201": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"description": "Created"
}
},
"operationId": "createOrder",
"requestBody": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"required": true
}
},
"parameters": [
{
"in": "query",
"name": "page",
"schema": {
"type": "integer",
"minimum": 1
}
}
]
},
"/orders/{id}": {
"get": {
"summary": "Fetch one order",
"responses": {
"200": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"description": "The order"
},
"404": {
"description": "Not found"
}
},
"deprecated": true,
"parameters": [
{
"in": "path",
"name": "id",
"schema": {
"type": "string"
}
}
],
"operationId": "getOrder"
}
}
},
"openapi": "3.1.0",
"security": [
{
"apiKey": []
}
],
"components": {
"schemas": {
"Order": {
"type": "object",
"required": [
"id",
"total",
"tenant_id"
],
"properties": {
"id": {
"type": "string"
},
"total": {
"type": "number"
},
"status": {
"enum": [
"open",
"shipped",
"disputed"
],
"type": "string"
},
"tenant_id": {
"type": "string"
}
}
}
},
"securitySchemes": {
"apiKey": {
"in": "query",
"name": "api_key",
"type": "apiKey"
}
}
}
},
"before": {
"info": {
"title": "Orders API",
"version": "1.4.0"
},
"paths": {
"/orders": {
"get": {
"summary": "List orders",
"responses": {
"200": {
"content": {
"application/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Order"
}
}
}
},
"description": "A page of orders"
},
"429": {
"description": "Rate limited"
}
},
"operationId": "listOrders"
},
"post": {
"summary": "Create an order",
"responses": {
"201": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"description": "Created"
}
},
"operationId": "createOrder",
"requestBody": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
}
}
},
"parameters": [
{
"in": "query",
"name": "page",
"schema": {
"type": "integer",
"minimum": 1
}
}
]
},
"/orders/{id}": {
"get": {
"summary": "Fetch one order",
"responses": {
"200": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Order"
}
}
},
"description": "The order"
},
"404": {
"description": "Not found"
}
},
"parameters": [
{
"in": "path",
"name": "id",
"schema": {
"type": "string"
}
}
],
"operationId": "getOrder"
}
},
"/legacy/export": {
"get": {
"summary": "Legacy export",
"responses": {
"200": {
"description": "A CSV export"
}
},
"operationId": "legacyExport"
}
}
},
"openapi": "3.1.0",
"security": [
{
"apiKey": []
}
],
"components": {
"schemas": {
"Order": {
"type": "object",
"required": [
"id",
"total"
],
"properties": {
"id": {
"type": "string"
},
"total": {
"type": "number"
},
"status": {
"enum": [
"open",
"shipped"
],
"type": "string"
},
"legacy_ref": {
"type": "string"
}
}
}
},
"securitySchemes": {
"apiKey": {
"in": "header",
"name": "X-Api-Key",
"type": "apiKey"
}
}
}
},
"require_error_statuses": [
500
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"limits": {
"maxFindings": 500,
"maxOperations": 500,
"maxClientOperations": 200,
"maxRequestBodyBytes": 262144
},
"stable": false,
"complete": true,
"findings": [
{
"code": "STATUS_REMOVED",
"detail": "GET /orders: status 429 is no longer declared, so a client handling it has no contract for it.",
"status": "429",
"operation": "GET /orders"
},
{
"code": "REQUIRED_ERROR_STATUS_MISSING",
"detail": "GET /orders does not declare status 500, which was required of every operation.",
"status": "500",
"operation": "GET /orders"
},
{
"code": "REQUIRED_ERROR_STATUS_MISSING",
"detail": "POST /orders does not declare status 500, which was required of every operation.",
"status": "500",
"operation": "POST /orders"
}
],
"request_id": "example-request",
"service_id": "openapi_status_code_contract_drift",
"assumptions": [
"A required error status counts as declared when the operation declares it exactly, as a range, or through default.",
"Operations present in only one document are left to openapi_endpoint_inventory_diff rather than reported twice."
],
"limitations": [
"Declared response statuses only. What the implementation actually returns is not knowable from a document.",
"stable is true only when both documents were read in full and no operation gained, lost or under-described a status."
],
"observed_at": "2026-10-02T00:00:00.000Z",
"not_examined": [],
"finding_count": 4,
"service_version": "1.0.0",
"findings_by_code": {
"STATUS_REMOVED": 1,
"REQUIRED_ERROR_STATUS_MISSING": 3
},
"operations_compared": 3,
"operations_with_status_change": 1
}
}
},
"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": [
"before",
"after"
],
"properties": {
"after": {
"type": "object"
},
"before": {
"type": "object"
},
"require_error_statuses": {
"type": "array",
"items": {
"type": "integer",
"maximum": 599,
"minimum": 100
},
"maxItems": 20,
"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 07:54Z
- Last indexed by Roundhouse
- 2026-10-05 00:20Z
- Last enriched (probe, favicon, geo)
- 2026-10-04 10:45Z
- 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 OpenAPI Status Drift 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=OpenAPI%20Status%20Drift' 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/openapi-status-code-contract-drift, 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.