Phone
BlockRunAI/ClawRouter
Verify phone numbers (carrier + SIM-swap fraud signals) and place AI-powered outbound voice calls via BlockRun's gateway (Twilio + Bland.ai).
A skill your agent uses when an AI phone call agent (outbound caller or inbound voicebot) needs to recognise that the other end of the call is also an AI, switch to a compressed machine mode, and…
$ npx skills add CALLE-AI/awesome-phone-call-agents --skill dialtone-handshake -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install CALLE-AI/awesome-phone-call-agents dialtone-handshake --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/CALLE-AI/awesome-phone-call-agents.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/dialtone-handshake .claude/skills/dialtone-handshake && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "dialtone-handshake" agent skill from https://github.com/CALLE-AI/awesome-phone-call-agents/tree/main/skills/dialtone-handshake into .claude/skills/dialtone-handshake/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dialtone-handshake", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/CALLE-AI/awesome-phone-call-agents/tree/main/skills/dialtone-handshakeType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add CALLE-AI/awesome-phone-call-agents --skill dialtone-handshake -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install CALLE-AI/awesome-phone-call-agents dialtone-handshake --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CALLE-AI/awesome-phone-call-agents.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/dialtone-handshake .agents/skills/dialtone-handshake && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "dialtone-handshake" agent skill from https://github.com/CALLE-AI/awesome-phone-call-agents/tree/main/skills/dialtone-handshake into .agents/skills/dialtone-handshake/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dialtone-handshake", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add CALLE-AI/awesome-phone-call-agents --skill dialtone-handshake -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install CALLE-AI/awesome-phone-call-agents dialtone-handshake --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CALLE-AI/awesome-phone-call-agents.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/dialtone-handshake .cursor/skills/dialtone-handshake && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "dialtone-handshake" agent skill from https://github.com/CALLE-AI/awesome-phone-call-agents/tree/main/skills/dialtone-handshake into .cursor/skills/dialtone-handshake/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dialtone-handshake", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/CALLE-AI/awesome-phone-call-agents.git --path skills/dialtone-handshake--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add CALLE-AI/awesome-phone-call-agents --skill dialtone-handshake -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install CALLE-AI/awesome-phone-call-agents dialtone-handshake --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CALLE-AI/awesome-phone-call-agents.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/dialtone-handshake .gemini/skills/dialtone-handshake && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "dialtone-handshake" agent skill from https://github.com/CALLE-AI/awesome-phone-call-agents/tree/main/skills/dialtone-handshake into .gemini/skills/dialtone-handshake/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dialtone-handshake", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install CALLE-AI/awesome-phone-call-agents dialtone-handshakeInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add CALLE-AI/awesome-phone-call-agents --skill dialtone-handshake -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/CALLE-AI/awesome-phone-call-agents.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/dialtone-handshake .github/skills/dialtone-handshake && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "dialtone-handshake" agent skill from https://github.com/CALLE-AI/awesome-phone-call-agents/tree/main/skills/dialtone-handshake into .github/skills/dialtone-handshake/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dialtone-handshake", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add CALLE-AI/awesome-phone-call-agents --skill dialtone-handshake -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install CALLE-AI/awesome-phone-call-agents dialtone-handshake --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CALLE-AI/awesome-phone-call-agents.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/dialtone-handshake .opencode/skills/dialtone-handshake && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "dialtone-handshake" agent skill from https://github.com/CALLE-AI/awesome-phone-call-agents/tree/main/skills/dialtone-handshake into .opencode/skills/dialtone-handshake/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dialtone-handshake", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
dialtone-handshakeA skill your agent uses when an AI phone call agent (outbound caller or inbound voicebot) needs to recognise that the other end of the call is also an AI, switch to a compressed machine mode, and…
Dialtone Handshake is an agent skill from CALLE-AI/awesome-phone-call-agents. Use when an AI phone call agent (outbound caller or inbound voicebot) needs to recognise that the other end of the call is also an AI, switch to a compressed machine mode, and label call results by who actually attested them (human, phone system, or AI agent).
Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/examples.md` and `references/safety.md`).
The repository describes itself as: Portable phone-call Agent Skills, apps, examples, adapters, and scheduler recipes for AI agents. The licence is MIT.
3 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit 38d4118. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Dialtone Handshake loads about 1k tokens when it runs, and up to ~1.7k if it reads all its reference files. Until then it costs about 70 tokens; SKILL.md has 491 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from CALLE-AI/awesome-phone-call-agents at commit 38d4118, republished under its MIT licence (© CALLE-AI). 491 words, ~1,011 tokens.
.claude/skills/dialtone-handshake/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.DIALTONE v1 is a spoken handshake plus an attestation rule for phone calls where both ends may be AI agents. It has two halves:
The runnable reference implementation is apps/python/dialtone. It includes detection, the attestation gate, an honest evaluation and a demo.
task_completed: true as a commitment: bookings, cancellations, refunds, payments or reschedules.agent_asserted result is not sufficient evidence for these.1. Caller opening, after the disclosure, with a fresh 3-digit nonce per call:
Hi, I'm an AI assistant calling on behalf of Jordan Lee. Dialtone one, code four seven two.
2. Acknowledgement from a DIALTONE-aware voicebot:
Dialtone one acknowledged, code four seven two. Automated agent. Human review: no.
3. Mode. Pick one based on who answered:
| Who answered | Mode | Style |
|---|---|---|
| Acknowledged, or clearly an automated agent | MACHINE | field: value sentences; ask only for outcome, confirmation code, and human review |
| Phone menu | MENU | Navigate with keypad tones or short options |
| Otherwise, or unsure | HUMAN | Full disclosure, natural pace |
4. Attestation. Label every result by who confirmed it:
| Label | Who confirmed | Counts as task completed? |
|---|---|---|
human_attested | A person, with high detector confidence | Yes |
system_asserted | A phone system read back a record | Yes |
agent_asserted | An AI agent: information, or a commitment with a verifiable artifact | Yes |
refused | An AI agent confirmed a binding commitment with no artifact | No |
unverified | Nothing confirmed, or the counterpart is uncertain | No |
The gate never upgrades CALL-E's task_completed; it can only downgrade it.
Add to the voicebot's system prompt:
<same digits>. Automated agent. Human review: <yes or no>."With the app in apps/python/dialtone:
dialtone preview --to +14155550123 --goal "Book a table for two on Friday at 7 PM" --principal "Jordan Lee"
dialtone classify transcript.json
dialtone evaldialtone preview prints the compiled CALL-E request and dials nothing.dialtone call ... --live plus a typed confirmation.references/safety.md before placing live calls.references/examples.md for worked handshake and attestation examples.© CALLE-AI, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 2 other files (references) in skills/dialtone-handshake of CALLE-AI/awesome-phone-call-agents.
Open the folder on GitHubat commit 38d4118
Dialtone Handshake next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Dialtone Handshake this skillCALLE-AI/awesome-phone-call-agents | 107 | — | ~1k | Automated safety check: Pass | MIT | |
| PhoneBlockRunAI/ClawRouter | 6.6k | — | ~2.4k | Automated safety check: Pass | MIT | |
| Adding Inbound WebhooksPostHog/posthog | 40k | — | ~3.1k | Automated safety check: Pass | Custom licence | |
| Migrating LLM Gateway CallersPostHog/posthog | 40k | — | ~1.3k | Automated safety check: Pass | Custom licence | |
| Phone Harnessmilind-soni/OpenMausBot | 4.4k | — | ~364 | Automated safety check: Pass | Apache-2.0 | |
| Phone HarnessShawnPana/phone-harness | 3.2k | — | ~7.7k | Automated safety check: Pass | MIT |
BlockRunAI/ClawRouter
Verify phone numbers (carrier + SIM-swap fraud signals) and place AI-powered outbound voice calls via BlockRun's gateway (Twilio + Bland.ai).
PostHog/posthog
A skill your agent uses when adding a webhook endpoint for a third party that sends to PostHog, adding an inbound webhook consumer for a provider that already has an endpoint, or migrating a…
PostHog/posthog
Migrates an LLM caller from services/llm-gateway to PostHog/ai-gateway.
milind-soni/OpenMausBot
Control, inspect, test, or automate a physical Android phone connected to OpenMausBot over authorized USB debugging.
ShawnPana/phone-harness
Control the user's phone - an iPhone through the Mac's iPhone Mirroring window, an Android over adb, a rented cloud Android, or a cloud iPhone over HTTPS: open apps, tap, type, swipe, read the screen.
aaron-he-zhu/aaron-marketing-skills
A skill your agent uses when the user asks to "build a B2B cold-outbound sequence", "design reply-triage branching", "plan a domain warmup / sending throttle", or "make my outbound CAN-SPAM / opt-in…
CALLE-AI/awesome-phone-call-agents
Demonstrates advisory accessibility-planning checks with offline fixtures and a proposed bounded CALL-E workflow; use for exploring unknown or qualified venue claims without making calls.
CALLE-AI/awesome-phone-call-agents
A skill your agent uses when an agent holds some evidence for a physical-world claim but the evidence is broader, narrower, or older than the exact question asked, and it must first decide whether a…
CALLE-AI/awesome-phone-call-agents
Call a venue and ask the accessibility questions that matter to one specific person — step-free entry, hearing loop, guide dogs, quiet hours, changing places — then return a per-need verdict backed…
CALLE-AI/awesome-phone-call-agents
Turns a pre-written, building-level location config into a CALL-E outbound phone-call task that guides a delivery driver through the last few hundred metres to a specific building using landmarks…
CALLE-AI/awesome-phone-call-agents
Turn cited business research into a bounded, approval-gated phone-call plan that asks only unresolved factual questions, then reconcile CALL-E-compatible results without treating voicemail, refusal…
CALLE-AI/awesome-phone-call-agents
Place a goal-driven CALL-E call that collects specific structured answers, score those answers against a deterministic rubric you supply, and conditionally trigger a follow-up action — all runnable…
A skill your agent uses when an AI phone call agent (outbound caller or inbound voicebot) needs to recognise that the other end of the call is also an AI, switch to a compressed machine mode, and…. Dialtone Handshake is an agent skill from CALLE-AI/awesome-phone-call-agents. Use when an AI phone call agent (outbound caller or inbound voicebot) needs to recognise that the other end of the call is also an AI, switch to a compressed machine mode, and label call results by who actually attested them (human, phone system, or AI agent).
Dialtone Handshake fits situations like: an AI phone call agent (outbound caller; inbound voicebot) needs to recognise that the other end of the call is also an AI; switch to a compressed machine mode; label call results by who actually attested them (human.
Run `npx skills add CALLE-AI/awesome-phone-call-agents --skill dialtone-handshake -a claude-code`. Or copy the skill folder (skills/dialtone-handshake in CALLE-AI/awesome-phone-call-agents) into .claude/skills/dialtone-handshake in your project. Claude Code loads it when a task matches its description.
Run `npx skills add CALLE-AI/awesome-phone-call-agents --skill dialtone-handshake -a codex`. Or copy the skill folder (skills/dialtone-handshake in CALLE-AI/awesome-phone-call-agents) into .agents/skills/dialtone-handshake in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add CALLE-AI/awesome-phone-call-agents --skill dialtone-handshake -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/dialtone-handshake, .gemini/skills/dialtone-handshake, .github/skills/dialtone-handshake and .opencode/skills/dialtone-handshake in your project.
SKILL.md names no scripts, command-line tools or credentials: Dialtone Handshake is instructions for the agent only.
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Dialtone Handshake is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1k tokens (SKILL.md is roughly 4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 725 tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Dialtone Handshake: Phone (BlockRunAI/ClawRouter, 6.6k stars), Adding Inbound Webhooks (PostHog/posthog, 40k stars), Migrating LLM Gateway Callers (PostHog/posthog, 40k stars) and Phone Harness (milind-soni/OpenMausBot, 4.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
CALLE-AI (a GitHub organization) maintains it in CALLE-AI/awesome-phone-call-agents, which has 107 GitHub stars. The repository holds 101 skills in this directory. The repository was last updated on October 10, 2026.
Source: CALLE-AI/awesome-phone-call-agents on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.