readiness-linter.krimskrams.xyz
Useful paid APIs for AI agents. Every product accepts x402 and MPP payments.
SearchLiveeip155:8453Exactvia wellknown:readiness-linter.krimskrams.xyz
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 29 snapshots so far.
$7.07
Verified settled volume
75 settlements proven x402 by their on-chain EIP-3009 marker.
$0.100
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x276efA09388fB1578A6c415B8F90D26fdfCe0CF2The 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.
{
"help": {
"docs": "https://readiness-linter.krimskrams.xyz/llms.txt",
"client": {
"note": "We serve x402 protocol version 2. Use @x402/fetch version 2 or later. The unscoped x402-fetch 1.x is a version-1 client. It does not work here.",
"python": "pip install x402 # then x402.http.clients.wrapHttpxWithPayment",
"example": "import { wrapFetchWithPaymentFromConfig } from \"@x402/fetch\";\nimport { ExactEvmScheme } from \"@x402/evm\";\nimport { privateKeyToAccount } from \"viem/accounts\";\nconst account = privateKeyToAccount(\"0xYOURKEY\");\nconst pay = wrapFetchWithPaymentFromConfig(fetch, {\n schemes: [{ network: \"eip155:8453\", client: new ExactEvmScheme(account) }],\n});\nconst res = await pay(\"https://readiness-linter.krimskrams.xyz/v1/lint\", {\n method: \"POST\",\n headers: { \"content-type\": \"application/json\" },\n body: JSON.stringify(BODY), // see the openapi.json schema\n});",
"install": "npm i @x402/fetch @x402/evm viem",
"network": "eip155:8453"
},
"contact": "kramerhans2570@agentcard.email",
"how_to_pay": "Send the Payment-Signature header with the x402 payment payload.",
"other_rail": {
"url": "https://readiness-linter.krimskrams.xyz/mpp/v1/lint",
"name": "MPP"
},
"free_routes": [
"https://readiness-linter.krimskrams.xyz/health",
"https://readiness-linter.krimskrams.xyz/llms.txt",
"https://readiness-linter.krimskrams.xyz/openapi.json"
]
},
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x276efA09388fB1578A6c415B8F90D26fdfCe0CF2",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://readiness-linter.krimskrams.xyz/v1/lint",
"description": "Check whether an x402 or MPP OpenAPI document gives an agent enough data to find, pay for, and call each paid route. Use exactly one of openapi or openapi_url. Receive JSON with score, summary, and checks. Each check has id, severity, passed, message, and fix for payment metadata, HTTPS servers, input types and examples, response examples, descriptions, and HTTP 422 risks.",
"outputSchema": {
"type": "object",
"required": [
"score",
"checks",
"summary"
]
},
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://readiness-linter.krimskrams.xyz/v1/lint",
"mimeType": "application/json",
"description": "Check whether an x402 or MPP OpenAPI document gives an agent enough data to find, pay for, and call each paid route. Use exactly one of openapi or openapi_url. Receive JSON with score, summary, and checks. Each check has id, severity, passed, message, and fix for payment metadata, HTTPS servers, input types and examples, response examples, descriptions, and HTTP 422 risks.",
"serviceName": "x402/MPP Buyer-Readiness Linter"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"openapi": {
"info": {
"title": "Example API",
"description": "Return example data."
},
"paths": {
"/v1/example": {
"get": {
"summary": "Return example data",
"responses": {
"200": {
"content": {
"application/json": {
"example": {
"result": "ok"
}
}
}
}
},
"parameters": [
{
"in": "query",
"name": "q",
"schema": {
"type": "string"
},
"example": "hello",
"required": true,
"description": "Search text."
}
],
"description": "Return example data for a search query.",
"x-payment-info": {
"price": {
"mode": "fixed",
"amount": "0.020000",
"currency": "USD"
},
"protocols": [
{
"x402": {}
}
]
}
}
}
},
"servers": [
{
"url": "https://api.example.com"
}
]
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"score": 82,
"checks": [
{
"id": "required_params_examples_types",
"fix": "",
"passed": true,
"message": "Every required parameter and required body field has a type and an example.",
"severity": "critical"
}
],
"summary": "Score 82/100. 1 of 7 checks failed."
}
}
},
"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",
"title": "LintRequest",
"properties": {
"openapi": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"title": "Openapi",
"default": null
},
"openapi_url": {
"anyOf": [
{
"type": "string",
"maxLength": 2048
},
{
"type": "null"
}
],
"title": "Openapi Url",
"default": null
}
},
"description": "Caller-provided OpenAPI source. Send exactly one of the two fields."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"title": "LintResponse",
"properties": {
"score": {
"type": "integer",
"title": "Score",
"maximum": 100,
"minimum": 0
},
"checks": {
"type": "array",
"items": {
"type": "object",
"title": "CheckResult",
"properties": {
"id": {
"type": "string",
"title": "Id"
},
"fix": {
"type": "string",
"title": "Fix"
},
"passed": {
"type": "boolean",
"title": "Passed"
},
"message": {
"type": "string",
"title": "Message"
},
"severity": {
"enum": [
"critical",
"high",
"medium",
"low"
],
"type": "string",
"title": "Severity"
}
},
"description": "One buyer-readiness rule and its outcome."
},
"title": "Checks"
},
"summary": {
"type": "string",
"title": "Summary"
}
},
"description": "The full buyer-readiness report for one OpenAPI document."
}
}
}
}
}
}
},
"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.
0.1USDC≈ $0.1 USD
on Base · exact scheme
Pay 0.1 USDC on Base to 0x276e…e0CF2. The signed payment is good for 5 minutes.
- Paid to
- 0x276e…e0CF2
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 100000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x276efA09388fB1578A6c415B8F90D26fdfCe0CF2",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"type": "object",
"required": [
"score",
"checks",
"summary"
]
},
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"openapi": {
"info": {
"title": "Example API",
"description": "Return example data."
},
"paths": {
"/v1/example": {
"get": {
"summary": "Return example data",
"responses": {
"200": {
"content": {
"application/json": {
"example": {
"result": "ok"
}
}
}
}
},
"parameters": [
{
"in": "query",
"name": "q",
"schema": {
"type": "string"
},
"example": "hello",
"required": true,
"description": "Search text."
}
],
"description": "Return example data for a search query.",
"x-payment-info": {
"price": {
"mode": "fixed",
"amount": "0.020000",
"currency": "USD"
},
"protocols": [
{
"x402": {}
}
]
}
}
}
},
"servers": [
{
"url": "https://api.example.com"
}
]
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"score": 82,
"checks": [
{
"id": "required_params_examples_types",
"fix": "",
"passed": true,
"message": "Every required parameter and required body field has a type and an example.",
"severity": "critical"
}
],
"summary": "Score 82/100. 1 of 7 checks failed."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"title": "LintRequest",
"properties": {
"openapi": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"title": "Openapi",
"default": null
},
"openapi_url": {
"anyOf": [
{
"type": "string",
"maxLength": 2048
},
{
"type": "null"
}
],
"title": "Openapi Url",
"default": null
}
},
"description": "Caller-provided OpenAPI source. Send exactly one of the two fields."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"title": "LintResponse",
"properties": {
"score": {
"type": "integer",
"title": "Score",
"maximum": 100,
"minimum": 0
},
"checks": {
"type": "array",
"items": {
"type": "object",
"title": "CheckResult",
"properties": {
"id": {
"type": "string",
"title": "Id"
},
"fix": {
"type": "string",
"title": "Fix"
},
"passed": {
"type": "boolean",
"title": "Passed"
},
"message": {
"type": "string",
"title": "Message"
},
"severity": {
"enum": [
"critical",
"high",
"medium",
"low"
],
"type": "string",
"title": "Severity"
}
},
"description": "One buyer-readiness rule and its outcome."
},
"title": "Checks"
},
"summary": {
"type": "string",
"title": "Summary"
}
},
"description": "The full buyer-readiness report for one OpenAPI document."
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- —
- Last indexed by Roundhouse
- 2026-09-20 19:15Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 19:45Z
- x402 version
- 2
- Max timeout
- 300s
- 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. 29 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 readiness-linter.krimskrams.xyz 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=readiness-linter.krimskrams.xyz' 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://readiness-linter.krimskrams.xyz/v1/lint, 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.