Openclaw Phone

CallMyCall (OpenClaw Skill)

This skill helps you operate CallMyCall from chat. It is pull based (no webhook callbacks): you start a call, store the returned call ID in state, and later fetch status and results on demand.

API Key Resolution (OpenClaw best practice)

Resolve credentials in this order:

1. Environment variable: CALLMYCALL_API_KEY (preferred)
2. OpenClaw user config: ~/.openclaw/openclaw.json under skills.openclaw-phone.apiKey
3. If still missing, first ask if the user wants to save the key in ~/.openclaw/openclaw.json for future use.
   • If yes: ask for the key, then persist it.
   • If no: ask for the key for one-time use only (do not persist).

Persistence rules:

• Never store API keys in SKILL.md, examples, references, or memory/state files.
• Do not write API keys into recent_calls or any conversation-visible output. Do not tell the user “I won’t echo it back.”
• If user declines persistence, use the provided key for the current task only.

How This Skill Should Work

1. Resolve API key using the order in "API Key Resolution (OpenClaw best practice)".
2. Collect required call info using a layered gating flow (below).
3. Present a short review summary and ask for confirmation.
4. On confirmation, call POST /v1/start-call.
5. Store the returned sid in state as a recent call.

Required Auth

Send the API key in the Authorization header:

Authorization: Bearer YOUR_API_KEY

Never echo the API key back to the user or include it in logs/summaries.

Stateful Calls List (required)

Maintain a list (last 10) of recent calls in state:

• recent_calls: array of objects
  • id (call SID)
  • phone_number
  • task
  • started_at
  • status (optional, updated when you fetch)

Use this list to let the user say "end call 1" or "show results for call 2".

Layered Gating Flow (copy from web app)

Do not rely on a single validation step. Use all layers below.

Layer 1: Structured collection contract

Do not finalize a task until all required fields exist:

• phone_number
• language
• call_brief (background + goals)

Layer 2: Task gap analysis

When the user gives the initial request, analyze what is missing. Then ask only for missing info. If the user answers partially, repeat analysis and keep asking for the remaining gaps.

Layer 3: Prompt level enforcement

While missing info exists, continue gathering required fields. Do not proceed to the call until all required fields are present.

Layer 4: Runtime validation before finalizing

Before sending the call request:

• Ensure phone exists and is E.164
• Block emergency or premium numbers
• Ensure from_number is not the same as phone_number
• Normalize language; normalize voice fields (genderVoice, openaiVoice) only if provided
• If scheduling is present, parse and clamp to a valid time

Layer 5: Human review gate

Present a short review summary:

• Phone number
• Call brief (background + goals)
• Language (and voice if provided)
• Any schedule

Ask: "Confirm and place the call?" Do not proceed without explicit confirmation.

Workflows

Start a Call

1. Collect required fields using the layered gating flow.
2. If a schedule/time is requested, follow Scheduled Calls below instead of calling the API immediately.
3. Otherwise call POST /v1/start-call.
4. Store the returned sid in recent_calls.
5. Reply with confirmation and the call ID.

Scheduled Calls (OpenClaw-side)

Because the API has no scheduling field, schedule via OpenClaw:

1. Collect all required fields now.
2. Save a compact call plan in skill state (phone, brief, language/voice, any options).
3. Create a cron job at the target time that runs an agentTurn to place the call.
4. At fire time, load the stored plan, call POST /v1/start-call, store the sid, and report back with call IDs.

If the user asks to schedule a call for later, schedule it on the OpenClaw side (cron) since the API does not support scheduling. Collect all required fields now, store a compact call plan in state, and create a cron job to execute start-call at the target time. At fire time, place the call and report back with call IDs.

List Recent Calls

1. Read recent_calls from state.
2. For each call, fetch status via GET /v1/calls/:callId if needed.
3. Display a numbered list.

Retry Until Answered (important)

When the user asks to call repeatedly until answered:

1. Place one call with POST /v1/start-call.
2. Poll GET /v1/calls/:callId until terminal status.
3. Treat response as either flat (status, duration) or nested (call.status, call.duration).
4. If status is busy, no-answer, failed, or canceled, wait requested interval and place next call.
5. Stop retry loop when:
   • status is in-progress, or
   • status is completed with duration > 0.
6. Report each attempt (call ID + status) back to user.

Implementation note: keep one base URL per run (https://call-my-call-backend.fly.dev preferred) and use it consistently for both start + status endpoints.

End a Call

If the user says "end the call" without specifying which, list recent calls and ask which one.

If there is only one active call, confirm and end it.

Call:

• POST /v1/end-call with { callSid }.

Get Results

When the user asks for call results:

1. Fetch status via GET /v1/calls/:callId.
2. If available, fetch transcript via GET /v1/calls/:callId/transcripts/stream.
3. If the call was recorded, fetch recording URL via GET /v1/calls/:callSid/recording.

Return:

• Status (completed, failed, canceled)
• Short summary (1 to 3 bullets)
• Transcript excerpt (first few lines)
• Recording URL (if present)

Safety and UX

• If user input is ambiguous, ask a clarification question.
• Never expose secrets or store API keys in transcript.
• If a request fails, show the HTTP error and suggest next steps.

References

• Full API reference: references/api.md
• Examples: examples/prompts.md