api.zfinia.com

https://api.zfinia.com/x402/v1/mcp-required-argument-drift

Shares a payout wallet with 178 other endpoints — its adoption is attributed from that shared wallet's traffic, not earned exclusively.

See which tool arguments changed obligation between two MCP manifests. Separates tightening, where every existing call now fails, from loosening, where a tool may be invoked without something it previously demanded. A newly required argument is the single change most likely to break an agent that was working yesterday.

reliability

Reliability & health

Uptime and response time from our own unpaid probes, plus the reliability score built from them.

7 days 30 days

Uptime

100.0% avg

Response time

p50 2308ms · p95 3438ms

Data table

Reliability history per time bucket over the last 30 days (daily).
Bucket	Uptime	Probes	Response time
10/4/2026, 12:00:00 AM	100%	3	2308ms

Composite reliability — the weighted average of the dimensions below, on a 0–100 scale.

Availability: 100
Latency: 26
Security: 100
Transparency: 61
Activity: 1

Confidence 6% — how much probe evidence backs this score. A thin history is flagged, not hidden.

See the scoring methodology for exactly how each number is computed.

Payment

Currencies: USDC
Networks: base
Facilitator: unknown
SDK: x402-express

Operator

Company: inferred — unknown
Jurisdiction: —
Registrar: Dreamscape Networks International Pte Ltd
Domain registered: 2026-07-14
Hosting network: VERCEL-01
Hosting country: —

Operator context is derived from public RDAP/TLS records and unverified. Company and country are only available for endpoints that publish them (an OV/EV TLS certificate or a non-redacted domain record); most endpoints are CDN-fronted and disclose neither.

On-chain activity (base)

195

payments (30d)

23.65

USD volume (30d)

paying wallets (30d)

Payments per day

last payment 10/4/2026

Data table

Settled payments per day.
Day	Payments	Volume (USD)	Paying wallets
9/6/2026	8	0.07	1
9/9/2026	2	0	1
9/11/2026	1	0.01	1
9/14/2026	2	0.02	1
9/17/2026	2	0	2
9/19/2026	1	0	1
9/20/2026	1	0	1
9/25/2026	1	0	1
9/29/2026	4	0.09	2
9/30/2026	3	0.13	3
10/2/2026	20	0.1	3
10/3/2026	1	0.06	1
10/4/2026	149	23.16	1

This payout wallet is shared: figures cover all 179 endpoints paid at it, since payments cannot be attributed to one of them. Only payments settled on chains and facilitators we index.

Linked by wallet — likely same operator

On-chain agent identity and the x402 endpoint that shares its settlement wallet.

Response schema

{
  "additionalProperties": false,
  "properties": {
    "assumptions": {
      "items": {
        "type": "string"
      },
      "type": "array"
    },
    "complete": {
      "description": "Whether everything supplied was read. False means part of a manifest or transcript was not, which is a different problem from one that is wrong.",
      "type": "boolean"
    },
    "finding_count": {
      "description": "The true total, even when the listing is bounded.",
      "type": "integer"
    },
    "findings": {
      "items": {
        "properties": {
          "argument": {
            "type": "string"
          },
          "argument_count": {
            "description": "A count, under its own key so this field never carries two types.",
            "type": "integer"
          },
          "arguments": {
            "description": "Argument names a finding is about.",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "breaks": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "call": {
            "type": "integer"
          },
          "capability": {
            "type": "string"
          },
          "characters": {
            "type": "integer"
          },
          "code": {
            "type": "string"
          },
          "detail": {
            "type": "string"
          },
          "feature": {
            "type": "string"
          },
          "hint": {
            "type": "string"
          },
          "other_tool": {
            "type": "string"
          },
          "overlap": {
            "type": "number"
          },
          "pointer": {
            "type": "string"
          },
          "server": {
            "type": "string"
          },
          "servers": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "severity": {
            "type": "string"
          },
          "tool": {
            "type": "string"
          }
        },
        "required": [
          "code",
          "detail"
        ],
        "type": "object"
      },
      "type": "array"
    },
    "findings_by_code": {
      "type": "object"
    },
    "limitations": {
      "items": {
        "type": "string"
      },
      "type": "array"
    },
    "limits": {
      "type": "object"
    },
    "loosened_count": {
      "type": "integer"
    },
    "not_examined": {
      "items": {
        "type": "string"
      },
      "type": "array"
    },
    "observed_at": {
      "type": "string"
    },
    "request_id": {
      "description": "Delivery request identifier; also returned in x-foundry-request-id.",
      "type": "string"
    },
    "service_id": {
      "description": "Canonical service identifier.",
      "type": "string"
    },
    "service_version": {
      "description": "Version of the invoked service.",
      "type": "string"
    },
    "stable": {
      "description": "True only when both manifests were read in full and no obligation moved in either direction.",
      "type": "boolean"
    },
    "tightened_count": {
      "type": "integer"
    },
    "tools_compared": {
      "type": "integer"
    }
  },
  "required": [
    "request_id",
    "service_id",
    "service_version",
    "observed_at",
    "stable",
    "complete",
    "not_examined",
    "finding_count",
    "findings_by_code",
    "findings",
    "limits",
    "assumptions",
    "limitations",
    "tools_compared",
    "tightened_count",
    "loosened_count"
  ],
  "type": "object"
}