MCPDriftVerdict
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SearchLiveeip155:8453Exactvia cdp
McpTools-listSchema-driftBreaking-changeAgent-compatibility
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
$2.60
Verified settled volume
24 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-07-21 20:01Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x4aa55988fA032FBbB8DDEf496b0f194FEc62D614The 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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.02USDC≈ $0.02 USD
on Base · exact scheme
Pay 0.02 USDC on Base to 0x4aa5…2D614. The signed payment is good for 5 minutes.
- Paid to
- 0x4aa5…2D614
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 20000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4aa55988fA032FBbB8DDEf496b0f194FEc62D614",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"current": {
"tools": [
{
"name": "lookup_task",
"annotations": {
"readOnlyHint": true,
"openWorldHint": false,
"idempotentHint": true,
"destructiveHint": false
},
"description": "Look up one task.",
"inputSchema": {
"type": "object",
"required": [
"task_id"
],
"properties": {
"units": {
"enum": [
"metric",
"imperial"
],
"type": "string"
},
"task_id": {
"type": "string",
"minLength": 1
}
},
"additionalProperties": false
},
"outputSchema": {
"type": "object",
"required": [
"status"
],
"properties": {
"status": {
"enum": [
"open",
"closed"
],
"type": "string"
}
},
"additionalProperties": false
}
}
],
"complete": true,
"protocol_version": "2025-11-25"
},
"subject": {
"server_id": "acme/tasks@production"
},
"baseline": {
"tools": [
{
"name": "lookup_task",
"annotations": {
"readOnlyHint": true,
"openWorldHint": false,
"idempotentHint": true,
"destructiveHint": false
},
"description": "Look up one task.",
"inputSchema": {
"type": "object",
"required": [
"task_id"
],
"properties": {
"task_id": {
"type": "string",
"minLength": 1
}
},
"additionalProperties": false
},
"outputSchema": {
"type": "object",
"required": [
"status"
],
"properties": {
"status": {
"enum": [
"open",
"closed"
],
"type": "string"
}
},
"additionalProperties": false
}
}
],
"complete": true,
"protocol_version": "2025-11-25"
},
"contract_version": "mcp-drift/1",
"annotation_source_trust": "untrusted"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"action": "ACCEPT_CURRENT",
"hashes": {
"current_contract": "sha256:4f89f9c01a44ad6e96663d51bd957470acd36b27c524d9d15e2525ee94e127cc",
"current_snapshot": "sha256:fc3ad219f6b9bb68b3d9e96ab5920a90eb7c0d90be99a2aa509e69c7fad66820",
"baseline_contract": "sha256:e029e97109ad519fd93e6a30e07e5bb3f3a223803bf14147dac3ee539c2220bc",
"baseline_snapshot": "sha256:b536998673d7f19804f5717d8df56676da32dfc1689e81c44068412d794e51b9"
},
"service": "MCPDriftVerdict",
"verdict": "SAFE_ADDITIVE",
"service_reuse": "Call MCPDriftVerdict after every notifications/tools/list_changed, at agent startup when the current tools/list snapshot hash differs from the pinned baseline, and before accepting an MCP server upgrade. Reuse only for the exact baseline_snapshot hash, current_snapshot hash, and ruleset_version tuple.",
"ruleset_version": "2026-07-20.1",
"contract_version": "mcp-drift/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": [
"contract_version",
"subject",
"annotation_source_trust",
"baseline",
"current"
],
"properties": {
"current": {
"type": "object",
"required": [
"protocol_version",
"complete",
"tools"
],
"properties": {
"tools": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"inputSchema"
],
"properties": {
"name": {
"type": "string",
"pattern": "^[A-Za-z0-9_.-]{1,128}$"
},
"inputSchema": {
"type": "object",
"additionalProperties": true
}
},
"additionalProperties": true
},
"maxItems": 128
},
"complete": {
"type": "boolean",
"const": true
},
"protocol_version": {
"type": "string",
"const": "2025-11-25"
}
},
"additionalProperties": false
},
"subject": {
"type": "object",
"required": [
"server_id"
],
"properties": {
"server_id": {
"type": "string"
}
},
"additionalProperties": false
},
"baseline": {
"type": "object",
"required": [
"protocol_version",
"complete",
"tools"
],
"properties": {
"tools": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"inputSchema"
],
"properties": {
"name": {
"type": "string",
"pattern": "^[A-Za-z0-9_.-]{1,128}$"
},
"inputSchema": {
"type": "object",
"additionalProperties": true
}
},
"additionalProperties": true
},
"maxItems": 128
},
"complete": {
"type": "boolean",
"const": true
},
"protocol_version": {
"type": "string",
"const": "2025-11-25"
}
},
"additionalProperties": false
},
"contract_version": {
"type": "string",
"const": "mcp-drift/1"
},
"annotation_source_trust": {
"enum": [
"trusted",
"untrusted"
],
"type": "string"
}
},
"additionalProperties": false
},
"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",
"required": [
"service",
"contract_version",
"ruleset_version",
"verdict",
"action",
"hashes",
"service_reuse"
],
"properties": {
"action": {
"enum": [
"ACCEPT_CURRENT",
"REVIEW_CURRENT",
"HOLD_BASELINE",
"BLOCK_CURRENT"
],
"type": "string"
},
"hashes": {
"type": "object",
"required": [
"baseline_snapshot",
"current_snapshot",
"baseline_contract",
"current_contract"
],
"properties": {
"current_contract": {
"type": "string",
"pattern": "^sha256:[a-f0-9]{64}$"
},
"current_snapshot": {
"type": "string",
"pattern": "^sha256:[a-f0-9]{64}$"
},
"baseline_contract": {
"type": "string",
"pattern": "^sha256:[a-f0-9]{64}$"
},
"baseline_snapshot": {
"type": "string",
"pattern": "^sha256:[a-f0-9]{64}$"
}
},
"additionalProperties": false
},
"service": {
"type": "string",
"const": "MCPDriftVerdict"
},
"verdict": {
"enum": [
"UNCHANGED",
"SAFE_ADDITIVE",
"REVIEW",
"INCONCLUSIVE",
"BREAKING",
"SECURITY_REGRESSION"
],
"type": "string"
},
"service_reuse": {
"type": "string",
"const": "Call MCPDriftVerdict after every notifications/tools/list_changed, at agent startup when the current tools/list snapshot hash differs from the pinned baseline, and before accepting an MCP server upgrade. Reuse only for the exact baseline_snapshot hash, current_snapshot hash, and ruleset_version tuple."
},
"ruleset_version": {
"type": "string"
},
"contract_version": {
"type": "string",
"const": "mcp-drift/1"
}
},
"additionalProperties": true
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-07-21 20:01Z
- Last indexed by Roundhouse
- 2026-08-02 12:40Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 14:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
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
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service MCPDriftVerdict 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=MCPDriftVerdict' 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://bountyverdict-agent-production.mimirslab.workers.dev/api/mcp-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. 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.