OpenGauss is a project-scoped Lean workflow orchestrator that gives coding agents a command-line interface for managing formal proof and formalization tasks. It is used with Lean projects to coordinate agents, tooling, backend sessions, and workflows supplied by lean4-skills. The catalogue add-ons operate these Gauss-native workflows.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/math-inc/opengauss/telephonynpx skills add math-inc/OpenGauss --skill telephonygit clone --depth 1 https://github.com/math-inc/OpenGaussWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/math-inc/opengauss/telephony)<a href="https://agentmods.dev/skills/math-inc/opengauss/telephony"><img src="https://agentmods.dev/badge/skills/math-inc/opengauss/telephony.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00045 | $0.03153 |
| Opus 5 | $0.00023 | $0.01577 |
| Sonnet 5 | $0.00009 | $0.00631 |
| Haiku 4.5 | $0.00005 | $0.00315 |
Grade A, and why
telephony scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
80% identical to telephony — 109 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 418 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Telephony — Numbers, Calls, and Texts without Core Tool Changes
This optional skill gives Gauss practical phone capabilities while keeping telephony out of the core tool list.
It ships with a helper script, scripts/telephony.py, that can:
- save provider credentials into
~/.gauss/.env - search for and buy a Twilio phone number
- remember that owned number for later sessions
- send SMS / MMS from the owned number
- poll inbound SMS for that number with no webhook server required
- make direct Twilio calls using TwiML
<Say>or<Play> - import the owned Twilio number into Vapi
- place outbound AI calls through Bland.ai or Vapi
What this solves
This skill is meant to cover the practical phone tasks users actually want:
- outbound calls
- texting
- owning a reusable agent number
- checking messages that arrive to that number later
- preserving that number and related IDs between sessions
- future-friendly telephony identity for inbound SMS polling and other automations
It does not turn Gauss into a real-time inbound phone gateway. Inbound SMS is handled by polling the Twilio REST API. That is enough for many workflows, including notifications and some one-time-code retrieval, without adding core webhook infrastructure.
Safety rules — mandatory
- Always confirm before placing a call or sending a text.
- Never dial emergency numbers.
- Never use telephony for harassment, spam, impersonation, or anything illegal.
- Treat third-party phone numbers as sensitive operational data:
- do not save them to Gauss memory
- do not include them in skill docs, summaries, or follow-up notes unless the user explicitly wants that
- It is fine to persist the agent-owned Twilio number because that is part of the user's configuration.
- VoIP numbers are not guaranteed to work for all third-party 2FA flows. Use with caution and set user expectations clearly.
Decision tree — which service to use?
Use this logic instead of hardcoded provider routing:
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 418 lines · 45 tokens per session scan A 17b23a3512e0
telephony is a skill published in the GitHub repository math-inc/OpenGauss (1,261 stars, last pushed 5mo ago), licensed MIT. It adds 45 tokens to every session and 3,153 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 80% identical to telephony, differing in 109 lines, and is treated as a copy.
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