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agentshelf.syntexa.ch SIP Federation TLS SRV Lookup
x402
agentshelf.syntexa.ch SIP Federation TLS SRV Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-22).
Resolves _sipfederationtls._tcp DNS SRV records for a given registrable domain to support SIP federation over TLS
Price / call$0.004
Success—
StatusUnknown
How this service works
Call when an agent needs SRV records at _sipfederationtls._tcp.{hostname} for SIP federation TLS. The caller sends the registrable domain, not the underscored name. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-sipfederationtls first.
Output
Returns the SRV record set found at _sipfederationtls._tcp.{hostname}, including priority, weight, port, and target hostname for each record, enabling the caller to determine how to establish a federated SIP TLS connection.
Example use cases
Verify SIP federation reachability
“Check if example-corp.com has SIP federation TLS SRV records configured — I want to know the target host and port before trying to set up a SIP federation link with them.”
Diagnose SIP federation failure
“We're having trouble federating SIP calls with partner-telecom.net — can you pull their _sipfederationtls._tcp SRV records so I can see if the DNS config is correct?”
Audit SIP infrastructure for a domain
“Pull the SIP federation TLS SRV records for mycompany.org so I can confirm our DNS is publishing the right priority and weight values for our SIP federation setup.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/dns-srv-sipfederationtls?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to discover SIP federation TLS endpoints for a domain via DNS SRV, specifically targeting the _sipfederationtls._tcp record type used by Microsoft Lync/Skype for Business and compatible SIP federation systems. Prefer the free sandbox endpoint (/v1/sandbox/dns-srv-sipfederationtls) for testing. Choose this over generic DNS lookup tools when the caller specifically needs SIP federation TLS SRV records and wants a structured, purpose-specific response.
Side effects
- Domain has no _sipfederationtls._tcp SRV records published — returns empty result or NXDOMAIN
- Invalid or malformed hostname input — returns validation error
- DNS resolution timeout or upstream resolver failure — returns error
- Hostname exceeds 253-character limit — returns schema validation error
- Payment failure (x402) — request rejected before DNS lookup is performed
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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