Call Tracking with Real-Time Bidding (RTB)

In-depth guide to Real-Time Bidding

Why real-time bidding beats static call routing

Most call tracking platforms route calls using static priority rules: if the caller's geo matches buyer A's territory, route to A. RTB flips the model. Every active buyer gets pinged simultaneously with the caller's data, and the platform picks the highest bidder above your minimum. The same call that pays $18 to your top static buyer might pay $35 in an open auction when buyer C has spare capacity that day. RTB lets the market price every individual call instead of locking you into rates negotiated months ago.

How CallScaler runs the auction

Here is exactly what happens between the caller entering their zip and the call connecting:

• The caller dials your tracking number and is prompted for their 5-digit zip code, with up to 3 retries on invalid entry
• CallScaler fires ping-post requests to every non-paused buyer in the RTB step in parallel
• Each buyer's endpoint receives the caller phone, zip, and a unique ref ID, then responds with accept/reject plus a bid amount
• CallScaler filters out rejections and bids below your minimum, then picks the highest remaining bid
• The call is dialed to the winning buyer's destination number, which they returned in their post response
• If no buyer accepts or every bid falls below the minimum, the call routes to your configured failover destination

AI buyer autofill: paste any spec, ship in seconds

Configuring a new buyer used to mean reading the network's API docs and hand-mapping every field. CallScaler ships an AI autofill that takes a paste of any curl command, raw HTTP request, JSON example, or excerpt from a network's help page (Ringba, MarketCall, TrackDrive, Arroyo Media, and others). Claude reads the spec and outputs a structured config: endpoint URL, request format (form versus JSON), headers, body params, and notes on anything ambiguous. Placeholder syntax like %CALLER_ID%, [tag:InboundNumber:Number], or {{phone}} gets mapped to CallScaler's standard {caller}, {zip}, {ref_id} templates automatically.

Pausing buyers without losing config

Buyers come and go. Daily caps get hit, networks pause integrations for compliance review, and rate negotiations happen mid-month. Instead of deleting a buyer's config every time, CallScaler lets you pause individual buyers in the RTB step. Paused buyers are skipped in every auction until you un-pause them. The endpoint URL, headers, and params stay intact, so flipping a buyer back on takes one click.

Failover that protects every call

RTB auctions don't always have a winner. Configure your fallback so callers are never stranded:

• Set a fallback destination, another buyer, your own answering line, or a voicemail flow
• If every buyer rejects, the auction times out, or no bid clears your minimum, the call routes to fallback
• The caller never hears 'all buyers are unavailable' or experiences dead air, they are routed to a real destination
• Track failover rate in the dashboard so you can spot when buyer coverage is thinning out

RTB pricing and how to start

Real-time bidding is a paid addon at $39 per month with a 7-day free trial. Pricing is per business, not per call or per buyer, so you can run unlimited auctions with unlimited buyers on a single subscription. To enable it, open any call flow, drop in an RTB step, paste a buyer spec into the AI autofill, and you are live. Most major networks (Ringba, MarketCall, Arroyo Media, TrackDrive) work out of the box. You can run RTB alongside static routing in the same call flow, for example, send VIP traffic to a single high-paying buyer and route everything else through the auction.

1. 01

   Caller Enters Zip

   The call flow asks the caller for their 5-digit zip. CallScaler retries up to 3 times on invalid input before falling through.

2. 02

   Ping Every Buyer in Parallel

   CallScaler fires ping-post requests to every active buyer simultaneously with the caller phone, zip, and ref ID, then waits for bids.

3. 03

   Highest Bid Wins

   Buyers respond with accept or reject and a bid amount. CallScaler picks the highest accepted bid above your minimum and dials the winner.

4. 04

   Safe Failover

   If no buyer accepts or every bid falls below your minimum, the call routes to your configured failover destination. The caller is never stranded.

Pricing as of May 2026 from public sources. CallScaler's flat $39/mo with zero per-call fees and AI buyer autofill is the lowest-cost serious RTB platform on the market.