kairostamp.com

https://kairostamp.com/api/v1/digest

Shares a payout wallet with 9 other endpoints — its adoption is attributed from that shared wallet's traffic, not earned exclusively.

URL digest receipt: server-side fetch of one public http/https URL, returning a time-stamped receipt with the HTTP status, final URL, content type, byte length, SHA-256 of the response body, redirect chain, receipt id and tamper-evident hash-chain entry. Single GET query parameter (url). One call performs one fetch; there is no monitoring and no retry.

57
reliability

Reliability & health

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

7 days 30 days

Uptime

98.0% avg
0% 50% 100% Sun 11 AMTue 6 AMWed 4 PMFri 12 AM

Response time

p50 486ms · p95 1001ms
0ms 750ms 1500ms Sun 11 AMTue 6 AMWed 4 PMFri 12 AM
Data table
Reliability history per time bucket over the last 7 days (hourly).
Bucket Uptime Probes Response time
8/23/2026, 11:00:00 AM 0% 1 —
8/24/2026, 11:00:00 AM 100% 1 333ms
8/24/2026, 12:00:00 PM 100% 1 781ms
8/24/2026, 2:00:00 PM 100% 1 764ms
8/24/2026, 3:00:00 PM 100% 1 577ms
8/24/2026, 4:00:00 PM 100% 1 847ms
8/24/2026, 5:00:00 PM 100% 1 558ms
8/24/2026, 6:00:00 PM 100% 1 345ms
8/24/2026, 7:00:00 PM 100% 1 548ms
8/24/2026, 9:00:00 PM 100% 1 334ms
8/24/2026, 10:00:00 PM 100% 1 899ms
8/24/2026, 11:00:00 PM 100% 1 890ms
8/25/2026, 12:00:00 AM 100% 1 451ms
8/25/2026, 1:00:00 AM 100% 1 693ms
8/25/2026, 2:00:00 AM 100% 1 443ms
8/25/2026, 4:00:00 AM 100% 1 1497ms
8/25/2026, 5:00:00 AM 100% 1 661ms
8/25/2026, 6:00:00 AM 100% 1 884ms
8/25/2026, 7:00:00 AM 100% 1 463ms
8/25/2026, 8:00:00 AM 100% 1 438ms
8/25/2026, 9:00:00 AM 100% 1 1132ms
8/25/2026, 11:00:00 AM 100% 1 478ms
8/25/2026, 12:00:00 PM 100% 1 445ms
8/25/2026, 1:00:00 PM 100% 1 485ms
8/25/2026, 4:00:00 PM 100% 1 451ms
8/25/2026, 7:00:00 PM 100% 1 449ms
8/25/2026, 9:00:00 PM 100% 1 445ms
8/26/2026, 12:00:00 AM 100% 1 669ms
8/26/2026, 2:00:00 AM 100% 1 691ms
8/26/2026, 5:00:00 AM 100% 1 671ms
8/26/2026, 8:00:00 AM 100% 1 1085ms
8/26/2026, 10:00:00 AM 100% 1 455ms
8/26/2026, 1:00:00 PM 100% 1 559ms
8/26/2026, 4:00:00 PM 100% 1 455ms
8/26/2026, 6:00:00 PM 100% 1 437ms
8/26/2026, 9:00:00 PM 100% 1 450ms
8/26/2026, 11:00:00 PM 100% 1 446ms
8/27/2026, 2:00:00 AM 100% 1 512ms
8/27/2026, 5:00:00 AM 100% 1 434ms
8/27/2026, 7:00:00 AM 100% 1 875ms
8/27/2026, 10:00:00 AM 100% 1 892ms
8/27/2026, 1:00:00 PM 100% 1 430ms
8/27/2026, 3:00:00 PM 100% 1 441ms
8/27/2026, 4:00:00 PM 100% 1 674ms
8/27/2026, 5:00:00 PM 100% 1 449ms
8/27/2026, 6:00:00 PM 100% 1 450ms
8/27/2026, 7:00:00 PM 100% 1 486ms
8/27/2026, 9:00:00 PM 100% 1 449ms
8/27/2026, 10:00:00 PM 100% 1 676ms
8/27/2026, 11:00:00 PM 100% 1 876ms
8/28/2026, 12:00:00 AM 100% 1 454ms
57
Composite reliability — the weighted average of the dimensions below, on a 0–100 scale.
Availability
98

How often it was reachable when we probed it (weight 35%).

Latency
93

How quickly it answers when it is up — fast scores high (weight 20%).

Security
100

Whether it serves over working TLS / https (weight 15%).

Transparency
67

Whether the operator disclosed what it does — description, schema, identity (weight 15%).

Activity
1

Observed on-chain payments to this endpoint's wallet — transactions, volume, and distinct paying wallets over the last month (weight 15%; not yet measured when we have not seen its wallet settle).

Confidence 100% — 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
unknown

Operator

Company
inferred — unknown
Jurisdiction
—
Registrar
Porkbun LLC
Domain registered
2026-08-21
Hosting network
DET-FRA-CUSTOMERS
Hosting country
EU

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)

11
payments (30d)
0.04
USD volume (30d)
2
paying wallets (30d)

Payments per day

last payment 8/23/2026
0 10 20 Aug 23
Data table
Settled payments per day.
Day Payments Volume (USD) Paying wallets
8/23/2026 11 0.04 2

This payout wallet is shared: figures cover all 10 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.

https://kairostamp.com/api/v1/robots-check x402 endpoint https://kairostamp.com/api/v1/sitemap x402 endpoint https://kairostamp.com/api/v1/text-extract x402 endpoint https://kairostamp.com/api/v1/headers x402 endpoint https://kairostamp.com/api/v1/link-map x402 endpoint https://kairostamp.com/api/v1/redirect-audit x402 endpoint https://kairostamp.com/api/v1/verify x402 endpoint
Response schema 
{
  "properties": {
    "chain_hash": {
      "description": "SHA-256 hash-chain value of this receipt.",
      "type": "string"
    },
    "previous_chain_hash": {
      "description": "SHA-256 hash-chain value of the previous receipt.",
      "type": [
        "string",
        "null"
      ]
    },
    "receipt": {
      "properties": {
        "byte_length": {
          "type": "integer"
        },
        "content_type": {
          "type": [
            "string",
            "null"
          ]
        },
        "fetched_at": {
          "format": "date-time",
          "type": "string"
        },
        "redirect_chain": {
          "items": {
            "format": "uri",
            "type": "string"
          },
          "type": "array"
        },
        "sha256": {
          "description": "SHA-256 of the response body bytes.",
          "type": "string"
        },
        "status_code": {
          "type": "integer"
        },
        "text_preview": {
          "type": [
            "string",
            "null"
          ]
        },
        "url": {
          "description": "Final URL that was fetched.",
          "format": "uri",
          "type": "string"
        }
      },
      "required": [
        "url",
        "fetched_at",
        "status_code",
        "content_type",
        "byte_length",
        "sha256",
        "redirect_chain"
      ],
      "type": "object"
    },
    "receipt_id": {
      "description": "Evidence receipt identifier.",
      "format": "uuid",
      "type": "string"
    }
  },
  "required": [
    "receipt_id",
    "chain_hash",
    "receipt"
  ],
  "type": "object"
}