MCP Usage Coverage
Find out which tools and arguments your agent actually uses. From a transcript of recorded calls, reports which declared tools were never called, which declared arguments were never sent, which arguments always carry the same value, and any call to a tool the manifest does not declare. Nothing is executed.
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 0.12 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
- 120000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
"amount": "120000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"calls": [
{
"name": "list_orders",
"arguments": {
"tenant_id": "acme"
}
},
{
"name": "list_orders",
"arguments": {
"page": 2,
"tenant_id": "acme"
}
},
{
"name": "list_orders",
"arguments": {
"page": 3,
"tenant_id": "acme"
}
},
{
"name": "get_order",
"arguments": {
"order_id": "o-1"
}
},
{
"method": "tools/call",
"params": {
"name": "get_order",
"arguments": {
"order_id": "o-2"
}
}
},
{
"name": "get_order",
"arguments": {
"id": "o-3"
}
},
{
"name": "archive_order",
"arguments": {
"order_id": "o-4"
}
}
],
"toolset": {
"tools": [
{
"name": "list_orders",
"annotations": {
"readOnlyHint": true,
"idempotentHint": true
},
"description": "List orders for a tenant, newest first, with optional paging. Returns only orders the caller is entitled to see.",
"inputSchema": {
"type": "object",
"required": [
"tenant_id"
],
"properties": {
"page": {
"type": "integer",
"minimum": 1,
"description": "Page number, starting at 1."
},
"status": {
"enum": [
"open",
"shipped"
],
"type": "string",
"description": "Restrict to one status."
},
"tenant_id": {
"type": "string",
"description": "The tenant whose orders to list."
}
}
},
"outputSchema": {
"type": "object",
"required": [
"items"
],
"properties": {
"items": {
"type": "array"
},
"next_page": {
"type": [
"integer",
"null"
]
}
}
}
},
{
"name": "get_order",
"annotations": {
"readOnlyHint": true
},
"description": "Fetch one order by its identifier, including line items and the current fulfilment state.",
"inputSchema": {
"type": "object",
"required": [
"order_id"
],
"properties": {
"order_id": {
"type": "string",
"description": "The order identifier."
}
}
},
"outputSchema": {
"type": "object",
"required": [
"id"
],
"properties": {
"id": {
"type": "string"
},
"total": {
"type": "number"
}
}
}
},
{
"name": "cancel_order",
"annotations": {
"idempotentHint": false,
"destructiveHint": true
},
"description": "Cancel an order that has not yet shipped. This cannot be undone and will issue a refund where one is due.",
"inputSchema": {
"type": "object",
"required": [
"order_id"
],
"properties": {
"reason": {
"type": "string",
"description": "Why it is being cancelled."
},
"order_id": {
"type": "string",
"description": "The order to cancel."
}
}
}
}
],
"serverInfo": {
"name": "orders-mcp",
"version": "1.3.0"
},
"capabilities": {
"tools": {
"listChanged": true
},
"resources": {
"subscribe": true
}
}
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"limits": {
"maxCalls": 1000,
"maxTools": 400,
"maxServers": 20,
"maxFindings": 500,
"confusableOverlap": 0.6
},
"passed": false,
"complete": true,
"coverage": [
{
"tool": "get_order",
"calls": 3,
"constant_arguments": [
"id"
],
"used_argument_count": 2,
"never_used_arguments": [],
"declared_argument_count": 1,
"undeclared_arguments_used": [
"id"
]
},
{
"tool": "list_orders",
"calls": 3,
"constant_arguments": [
"tenant_id"
],
"used_argument_count": 2,
"never_used_arguments": [
"status"
],
"declared_argument_count": 3,
"undeclared_arguments_used": []
},
{
"tool": "cancel_order",
"calls": 0,
"constant_arguments": [],
"used_argument_count": 0,
"never_used_arguments": [
"order_id",
"reason"
],
"declared_argument_count": 2,
"undeclared_arguments_used": []
}
],
"findings": [
{
"code": "CALL_TO_UNDECLARED_TOOL",
"tool": "archive_order",
"detail": "archive_order is called in the transcript but is not in the toolset, so either the manifest is stale or the call is wrong."
},
{
"code": "ARGUMENT_NEVER_USED",
"tool": "list_orders",
"detail": "list_orders: status is declared and never sent across 3 call(s).",
"argument": "status"
},
{
"code": "UNDECLARED_ARGUMENT_SENT",
"tool": "get_order",
"detail": "get_order: calls send id, which the tool does not declare.",
"argument": "id"
}
],
"request_id": "example-request",
"service_id": "mcp_tool_input_coverage_audit",
"assumptions": [
"The transcript supplied stands in for real usage. A tool unused here may still be used elsewhere, which is why the finding says it was never called in this transcript rather than that it is dead.",
"An argument with one distinct value across more than two calls is reported as constant, which usually means it is not really a parameter."
],
"limitations": [
"Observed usage over the calls supplied. Nothing is executed and no server is contacted.",
"passed is true only when every call was read, every called tool was declared, and every declared argument was exercised."
],
"observed_at": "2026-10-02T00:00:00.000Z",
"not_examined": [],
"tools_called": 2,
"finding_count": 4,
"read_call_count": 7,
"service_version": "1.0.0",
"findings_by_code": {
"TOOL_NEVER_CALLED": 1,
"ARGUMENT_NEVER_USED": 1,
"CALL_TO_UNDECLARED_TOOL": 1,
"UNDECLARED_ARGUMENT_SENT": 1
},
"tools_never_called": 1,
"declared_tool_count": 3,
"supplied_call_count": 7,
"calls_to_undeclared_tools": 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": [
"toolset",
"calls"
],
"properties": {
"calls": {
"type": "array",
"items": {
"type": "object"
},
"maxItems": 1000,
"minItems": 1
},
"toolset": {}
},
"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 07:57Z
- Last indexed by Roundhouse
- 2026-10-05 12:40Z
- Last enriched (probe, favicon, geo)
- 2026-10-04 10:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 0
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.
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Using Roundhouse, look up the x402 service MCP Usage Coverage 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=MCP%20Usage%20Coverage' 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/mcp-tool-input-coverage-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.