Same buyer, different problem: who do you partner with first?
Paste what your company does - who you sell to, how big your list is, what you integrate with - and a shortlist of possible partners, one row each. Your browser scores what can be measured on a 1-5 scale: each partner's audience size, engagement, the reciprocity between your two audiences and the ease of working with them, and flags competitors, audiences ten times apart and missing facts. Free, before you sign in, and nothing is uploaded. Then the score lane judges the rest of the co-marketing skill's six criteria and ranks the list, and the plan lane writes the joint campaign, the agreement outline and the first email.
The companies, people and numbers in the examples are invented. Two are scorecards (the invoicing one also carries its plan, one click after the scorecard) and one is a plan; each comes with a saved model reply, so you can see the whole page without signing in or spending a credit.
What this does, and what it does not
Co-marketing goes wrong in predictable ways. A partner who sells the same thing to the same buyer is a competitor, not a partner. A partner whose audience is fifty times yours has little reason to say yes, and one a fiftieth of yours gives you little reach. A company with no partnerships team and no history of joint campaigns can take months to get anything out the door. And a vague "let's do something together" email goes unanswered. The skill's answer is a partner who shares your buyer but solves a different problem, scored on six criteria, one specific campaign idea, a short agreement that settles who owns the leads, and an outreach email with one clear ask. This page measures what can be measured from your shortlist; its 1-5 thresholds are its own scale, shown next to every score.
The paid lanes see your description (the middle is cut past 5,000 characters, and the page says so), the header and the rows of the partners being scored (up to eight per run; one for a plan) and the page's scores and flags. Your input stays in this browser unless you run a lane. Every reply is held to your input: quotes are checked word for word, the page's scores must be repeated exactly, and no audience size, rate, price, date or duration may be invented - missing ones are written as [placeholders]. It does not find new partners or fetch account overlap data; bring what you know as columns. Derived from the agent skill @coreyhaines31/co-marketing by Corey Haines (coreyhaines31/marketingskills, MIT): its partner identification framework and scoring criteria, the partnership types, the campaign formats, brainstorming with a partner, the cold outreach template, call preparation, the agreement outline and the success metrics. Sources are listed in llms.txt.