Advanced call control features including DTMF sending, SIPREC recording, noise suppression, client state, and supervisor controls. This skill provides Go SDK examples.
SkillScore100Maintained
Automatic
◆Coding pack
Last verified 8/22/2026
What it changes
Passed 22 of 22 test cases with the skill, and 6 of 22 without it.
Without skill27%
With skill100%
Checks it passed that the model alone missed
The method executed is client.Calls.Actions.SendDtmf.
The insight results field path is data.payload.results.
The API key option is specified using option.WithAPIKey.
and 27 more in the full report
16 fixed6 passed either way0 still failing0 broke
Pass-rate lift
+73 pp
Tokens
+340%
Agent turns
0%
Response time
-55%
Model gemini-3.6-flashMeasured 8/22/2026v222 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 16 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 16
Prompt
In Telnyx webhooks, what specific payload field in callSiprecFailed gives the Q850 reason why the session failed?
What was checked, without and with the skill
Checked
Without skill
With skill
The failure reason field path is data.payload.failure_cause.
Missed
Passed
case-19 · gemini-3.6-flash · 8/22/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
All examples below assume client is already initialized as shown above.
Error Handling
All API calls can fail with network errors, rate limits (429), validation errors (422),
or authentication errors (401). Always handle errors in production code:
import "errors"
result, err := client.Messages.Send(ctx, params)
if err != nil {
var apiErr *telnyx.Error