Autonomous cross-channel ad buyer
A buyer that never sleeps, a ledger that never forgets.
Plumbmark is an autonomous cross-channel ad buyer: it watches Google, Meta, and TikTok on a 15-minute cadence, scores marginal ROAS at the campaign level, and moves spend within the guardrails your team sets. Every move is written to a reversible ledger — so finance, brand, and compliance can audit what the agent did and roll back the ones that crossed a line.
Three pieces, one buy
An agent, a policy file, and a ledger.
Autonomous buyers move money you cannot watch in real time. Plumbmark is built so your team can read every move after the fact — the same way you would read a junior buyer's ledger at the end of the day, except the junior is always on.
Plumbmark watches Google, Meta, and TikTok on a continuous 15-minute cadence — every account, every campaign. It scores marginal ROAS at the campaign level (not the blended average, which hides the signal you actually want), then shifts spend toward the highest-returning initiative within the guardrails you set. No surprise spikes — just a steady, auditable background loop.
Every cycle runs against a policy file your team writes once and the agent enforces every time. Floor ROAS caps a return ratio per channel — anything below it is paused, not negotiated. Max-daily-change caps the percent of budget any one move can shift in a single window. The allowed-channel set names where the agent can spend and where it cannot. Blackout hours freeze the buyer through finance close, retailer maintenance windows, and after-hours brand review. These are hard constraints: if a reallocation would breach one, the agent does not take it and logs the declined decision.
For the seeded team, that means floor ROAS sits at 2.0×, max-daily-change caps moves at 20%, blackout hours run 22:00 – 06:00, and the allowed-channel set is Google, Meta, TikTok. Your team's file replaces those values the moment your account goes live.
Every reallocation and pause lands in two places. The reversible /audit ledger records the timestamp, channel, inputs, the threshold breached, the reasoning, and a one-click rollback handle — one row per move, built for a reviewer to act on in isolation. The previous-day cover sheet — reallocations, pauses, and remaining budget — ships to /digest first thing the next morning. The /audit CSV export turns the ledger into a financial-grade artifact your accountant can open without a Plumbmark account; /digest ships the cover sheet finance reads before standup.
Read the receipts
See the plans. See how Plumbmark compares.
Plumbmark ships with one policy file and one ledger — Solo for a single operator, Team for multi-account roll-out. The comparison page walks the differences between Plumbmark and other autonomous buyers, sourced from the same ledger your team would audit.