# dns-sshfp-via-dnssb

> dns-sshfp-via-dnssb is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Retrieves SSHFP DNS records for a domain using DNS.SB as the DoH resolver, returning records, TTL, response code, DNSSEC validation status, and answer latency.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/sshfp/via/dnssb?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-sshfp-via-dnssb-dc0cc806
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dX-RGTcp3YOIZPszwt-Qb

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability dns-sshfp-via-dnssb-dc0cc806
```

Example prompt: Look up the SSHFP records for example.com using the DNS.SB resolver and tell me the response code, TTL, whether DNSSEC was validated, and how long the resolver took to answer.

## When to prefer this

Use this endpoint when you specifically need to see how the DNS.SB resolver answers SSHFP queries — particularly useful for multi-resolver comparison to detect propagation lag, split-horizon DNS, or resolver-specific filtering. Prefer this over generic SSHFP lookups when DNS.SB's perspective is the variable being tested alongside sibling endpoints (e.g. Google, Cloudflare, OpenDNS variants).

## Known failure modes

- Domain does not exist — returns NXDOMAIN response code with no records
- DNS.SB resolver fails to answer — returns SERVFAIL response code
- Domain has no SSHFP records published — returns NOERROR with empty answer section
- Network timeout reaching DNS.SB DoH endpoint — request may error out
- DNSSEC validation failure — resolver may return SERVFAIL with AD flag unset

## How this service works

SSHFP records for a domain as answered by DNS.SB (DNS over HTTPS): the records, TTL, response code (NOERROR/NXDOMAIN/SERVFAIL), whether the resolver validated DNSSEC, and the resolver's answer time. Compare resolvers to spot propagation lag, filtering or split-horizon answers. $0.01 per lookup.

## Output

Returns the SSHFP DNS records for the queried domain as answered by DNS.SB, including the record data (algorithm, fingerprint type, fingerprint), TTL, DNS response code (NOERROR, NXDOMAIN, or SERVFAIL), a flag indicating whether DNSSEC was validated by the resolver, and the resolver's answer latency in milliseconds.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dns-sshfp-via-dnssb-dc0cc806/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dns.intel.rallylive.ca](https://www.zero.xyz/host/dns.intel.rallylive.ca/llms.txt)