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AgentShelf DNS TXT ADSP Lookup
x402
AgentShelf DNS TXT ADSP Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-01).
Retrieves the DNS TXT record at _adsp._domainkey for a given hostname to check Author Domain Signing Practices (ADSP) policy.
Price / call$0.007
Success—
StatusUnknown
How this service works
Call when an agent needs TXT at _adsp._domainkey. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-adsp first.
Output
Returns the content of the DNS TXT record published at _adsp._domainkey.<hostname>, representing the domain's Author Domain Signing Practices (ADSP) policy, such as 'dkim=all', 'dkim=discardable', or 'dkim=unknown', or an indication that no record exists.
Example use cases
Email sender ADSP policy audit
“Can you check the ADSP DNS TXT record at _adsp._domainkey for mailchimp.com? I want to know what Author Domain Signing Practices policy they have configured.”
DKIM compliance verification
“Look up the _adsp._domainkey TXT record for stripe.com — I need to confirm whether they've published an ADSP policy for their sending domain.”
Domain security posture check
“Fetch the ADSP record for newsletter.acme.org so I can see what their _adsp._domainkey TXT entry says before we whitelist their emails.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/dns-txt-adsp?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to retrieve the ADSP (_adsp._domainkey) DNS TXT record for a domain as part of email authentication auditing, DKIM compliance checking, or domain security analysis. Prefer this over general DNS lookup tools when you need a focused, paid, reliable lookup of this specific record type without setting up DNS resolution infrastructure yourself.
Side effects
- No ADSP record exists at _adsp._domainkey for the given hostname — returns empty or not-found response
- Invalid or malformed hostname input — returns validation error
- DNS resolution timeout or upstream DNS failure — returns error
- Hostname exceeds 253 character limit — schema validation error
- Payment not provided or insufficient — returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| hostname | string | Public DNS hostname such as example.com. Not a URL, not an IP literal, and not a private name. |
Tags
x402
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