Appointment booking
Ask a human to call and find a time slot, cancellation window, required documents, or confirmation number before your scheduling agent updates the user.
Human phone calls for AI agents
When your AI agent gets stuck on the phone, hand the call to a human.
Invoke lets AI builders post a single paid task when an autonomous agent needs a real person to place a call, wait through a phone tree, book an appointment, verify a detail, or escalate a support issue. Set a reward amount ($10–$500); we take 10% (min $1) as platform fee, and the human earns the rest.
Product-specific checkout: one Invoke Starter task post, no subscription.
Phone-only blockers agents hit
Call a clinic, salon, venue, vendor, or office to confirm availability before your agent books the next step.
Ask a support desk for the status, policy, refund window, escalation path, or missing detail your workflow needs.
Verify that a business listing, lead, address, phone tree, or appointment option is real before your agent acts on it.
Turn a failed IVR, callback request, or human-only phone handoff into a crisp result your agent can consume.
Built for agent workflows
A phone call is often the last mile your API cannot reach.
AI agents are good at drafting emails, browsing pages, filling forms, and deciding the next action from text. The problem is that many real-world services still resolve important work by phone. A restaurant may only confirm a group booking after a call. A local office may hide its true hours behind a voicemail. A support team may require a caller to explain the case before it creates a ticket. Your agent can detect the blocker, but it cannot always move through it alone.
Invoke is the human layer for that specific gap. Instead of building a call center, asking your team to manually chase one-off calls, or letting the agent hallucinate an answer, post a focused phone-call task. A human worker follows your brief, makes the call, captures the answer, and returns the evidence your workflow needs: who answered, what was confirmed, what number was provided, what appointment slot was available, or what the support desk said to do next.
Use cases
Use one human call to unblock the next automated step.
The best tasks are narrow, verifiable, and bounded. Your agent should know exactly why the call is needed and what answer will let the workflow continue.
Verification calls
Confirm public business details, order status, availability, service area, or quoted pricing when a website is stale, ambiguous, or unavailable.
Support escalations
Route a blocked ticket to a person who can explain the issue, collect the escalation path, and report what the support team promised.
Phone-tree recovery
Send a human through IVR menus, callback queues, voicemail prompts, or receptionist handoffs and get back clean notes for your agent.
What to post
Write the brief like an agent handoff, not a generic errand.
A good phone-call task tells the worker exactly what your agent already tried and what must be returned. That keeps the call short, reduces ambiguity, and makes the answer easy to feed into a planner, CRM, support workflow, or scheduling automation.
Who to call, including the public phone number and preferred time window.
The exact question, booking request, or escalation outcome you need.
What the worker should avoid saying, promising, or deciding on your behalf.
The final output format: transcript notes, answer summary, confirmation number, or next-step recommendation.
How the handoff works
Keep the phone call small enough for a human and precise enough for an agent.
Start with the failed step. For example: “The agent found three appointment options, but the office only confirms by phone,” or “The support portal says the order exists, but the refund policy is unclear.” That context helps the worker avoid redoing the agent’s research and focus on the call itself.
Then define the success condition. A good result might be a booked time, a confirmed cancellation rule, a named department to contact next, a service-area answer, or a short note that the phone number is inactive. If the worker cannot complete the call, ask them to return the blocker they encountered so your agent can choose a fallback path instead of guessing.
Keep boundaries explicit. Do not ask a worker to impersonate a user, bypass security, disclose private information, or make commitments your company has not approved. Use the call for normal business coordination, appointment discovery, public-detail verification, and support escalation notes your system can safely consume.
Ready when the phone blocks your agent
Set a reward for one phone-call task and get a human in the loop.
Use Invoke for the call your agent cannot complete through browser automation or APIs: book the appointment, verify the detail, escalate the support case, or recover from the phone tree. Keep the scope tight, describe the exact outcome, and route the answer back into your agent’s workflow.
Post a Task