Most bad agency relationships are predictable failures — the signs are there before the contract is signed. Founders who evaluate agencies on case studies and pitch quality instead of fit, process, and accountability structures pay dearly for the lesson.
Agencies that have beautiful websites, polished presentations, and compelling case studies are good at marketing — their own. The relevant question is whether they're good at marketing for companies like yours. Ask every agency in your evaluation: can I speak with 3 clients who are similar to us (stage, industry, budget) in the last 12 months? What specific metrics moved during the engagement and how do those clients attribute that movement to the agency's work? Agencies that resist reference calls or can't produce similar-stage client references are hiding underperformance.
Agencies that require 12-month minimum commitments before delivering any results are protecting themselves from being evaluated fairly. A good agency should be able to demonstrate early value within 60-90 days. Start with a 90-day trial engagement with clearly defined deliverables and performance criteria. If they won't agree to a trial period with success metrics, that's a red flag about their confidence in their own work. Long-term contracts should be earned through demonstrated results.
Retainer agreements that define deliverables (monthly reports, X blog posts, Y ads managed) but not outcomes are contracts designed to protect the agency, not produce results. Deliverables-based contracts create agencies that are technically compliant but not accountable for the metrics that matter. Negotiate outcome-based components: pipeline generated, organic traffic growth, lead volume, keyword rankings. The agency will push back — agencies that are confident in their work will eventually agree to performance-linked metrics.
Strategy agencies charge $15-30K/month to produce frameworks, playbooks, and recommendations. Execution agencies charge $5-15K/month to actually build and run campaigns. Early-stage startups without a marketing team almost always need execution first. Hiring a strategy-only agency produces excellent documents that nobody implements. If you don't have internal resources to execute strategy, either hire an execution-focused agency or ensure the strategy agency includes execution in scope.
Agencies that assign junior analysts to manage day-to-day work after selling the relationship through their senior partners are a common and frustrating failure mode. Negotiate explicit point-of-contact terms: who specifically manages your account, what their experience level is, and who escalates to if there are issues. Ask: 'Who will be in our weekly call, and what percentage of their time will be dedicated to our account?' Agency capacity and attention are finite — you need to know where you are in their priority stack.
Agency relationships fail in two directions: bad agency produces bad results, and good agency with a constrained client also produces bad results. Agencies need: timely approval of creative and copy, access to customer data and personas, introduction to the sales team for feedback loops, brand assets and guidelines, and a responsive internal point of contact. Founders who hire an agency and then become unavailable for weeks have set the agency up to fail. The agency's success requires your inputs — especially in the first 90 days.
Cactus insight: The agency evaluation question that matters most: 'Show me one client who saw a specific measurable improvement in 90 days, and connect me with them directly.' Every agency has these stories in their pitch deck. Very few can connect you to a client who'll confirm the story independently. The ones who can are the ones worth hiring.
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