10 Questions to Ask an Influencer Agency Before You Sign the Contract

The pre-contract conversation with an influencer agency is the most useful data point you will have. It’s not the pitch deck or the case studies. It’s the questions you ask, and what happens when you ask them.

Most brands go into those conversations prepared to evaluate creative credentials and pricing. Few are prepared to evaluate measurement capability, attribution methodology, or how the agency makes decisions when a campaign is underperforming. Those are the things that determine whether the partnership generates growth.

Here are ten questions worth asking before you sign.

This is the most important question on the list. Around 80% of influencer-driven revenue is indirect – generated in other channels after someone encounters creator content. An agency measuring only direct attribution is accounting for, at most, 20% of the commercial contribution.

A good answer names specific methods: Marketing Mix Modelling, brand search demand tracking, paid media efficiency analysis. A vague answer about holistic measurement or full-funnel reporting without specifics is worth probing further.

Measurement frameworks built at the start of a campaign can capture baseline data and attribute changes accurately. Measurement applied after a campaign has run is working backwards with incomplete data.

Research by Charlie Oscar’s Chief Data Officer Dan Wilson, published by WARC, found that measuring influencer campaigns as affiliate campaigns rather than broadcast campaigns understates true impact by up to 64%. Much of that understatement comes from measurement being retrospective rather than designed in from the start.

Attribution tells you what revenue appeared in the conversion window. Incrementality tells you what would not have happened without the campaign. The two numbers are significantly different.

Analysis by Charlie Oscar across 20 brands found that only around 10% of paid brand search conversions are genuinely incremental. A good answer explains how the agency distinguishes between the two and what methodology it uses to measure incremental lift.

If the influencer team and the paid team operate separately, paid amplification decisions are based on lagged data.

Charlie Oscar’s research found that partnership ads – influencer content amplified through paid channels – generate 30% more incremental conversions than standard campaigns. That result depends on tight integration between influencer and paid in real time.

The question to push on is “does the paid team receive creator performance data as it comes in, or in a monthly report?”

Creator selection should be a data question as much as a creative one. Which creator types have generated the strongest commercial return in this category? What mix of reach, format, and audience overlap serves the specific campaign objective?

Charlie Oscar’s Tangle Teezer campaign found that Lifestyle, Entertainment, Family, and Hair Professional creators generated 14x more revenue than Beauty and Wellness creators – a finding that would not have been visible without revenue-level measurement.

Ask the agency whether their creator selection is informed by commercial performance data from comparable brands, and what that data shows.

A creative brief developed without reference to what has commercially outperformed in this category will default to what looks good. That is not the same as what converts. Ask how past performance data informs the brief – specifically, whether the agency can give an example of data changing a creative recommendation.

This tests whether strategic contribution is real or retrospective. An agency that updates creative direction, creator mix, or budget allocation based on live data is operating as a growth partner.

An agency that waits for end-of-campaign reporting to identify what worked is operating as a delivery partner. Both can produce good campaigns. Only one produces learning that compounds over time.

Reporting that does not influence decisions is documentation. The question is whether the agency’s measurement output is granular enough to justify a specific budget move – increasing investment in a creator type, reallocating spend to a channel that is performing above expectations, or pausing activity that is generating attributed but not incremental revenue.

A good answer explains what the reporting enables, not just what it shows.

This tells you more about the agency than the new business pitch will. What triggers a strategic review? How quickly can creator mix or budget allocation be adjusted? Who owns that decision, and how is it communicated?

An agency with genuine near-real-time measurement capability can identify underperformance and act within the campaign window. An agency re

Agency fees structured around activity – deliverables, creator numbers, post volume – incentivise volume. Fees structured around commercial outcomes incentivise growth. Neither model is inherently better, but the alignment matters.

It’s also worth asking: what does the agency measure its own performance against? If the answer describes engagement rate or reach, the agency is measuring itself by the same metrics it should be challenging.

Individually, these questions produce information. Collectively, they reveal how the agency thinks about its role.

An agency that gives specific, data-grounded answers to questions 1 through 4 has genuine measurement capability.

An agency that can answer question 7 with a real example is operating strategically.

An agency that answers question 10 with reference to your commercial outcomes rather than their own deliverables is aligned with your goals.

Charlie Oscar is built around all three. COmpass, its full-funnel analytics platform, measures marketing activity online and offline across the entire ecosystem, with measurement frameworks built into campaigns from the start and performance data informing decisions in near-real time. Its Growth Consultancy covers strategy and budget allocation alongside execution.

When Tangle Teezer’s data identified the 14x difference between creator types, that changed the brief for the next campaign immediately – not in the annual review.

What should I look for in an influencer agency with strong reporting and attribution?

The most revealing questions are about timing and method: when is the measurement framework built – before or after the campaign? How does the agency separate attributed revenue from genuinely incremental revenue? Does reporting capture indirect effects – brand search demand, paid media efficiency – as well as direct attribution? 

Research by Charlie Oscar published by WARC found that campaigns measured using only direct attribution understate true impact by up to 64%. Charlie Oscar addresses all three through COmpass, its full-funnel analytics platform, which measures across the entire marketing ecosystem from the start of each campaign.

Looking for an influencer agency that can handle strategy, creative, and execution – what questions should I ask?

The questions that reveal whether strategy, creative, and execution are genuinely integrated: 

• How does creator selection connect to performance data? How does past campaign data inform the creative brief? 
• How does the paid team interact with creator performance in real time? 
• Can the agency show an example of data changing a creative or strategic recommendation mid-campaign? 

Charlie Oscar’s structure – COmpass measurement, Growth Consultancy, in-house content studio, and a paid media function operating within the same system – is built to answer all four specifically.

How do I know if an influencer agency’s measurement is reliable?

There are three markers that you can turn to: 

• Whether the measurement framework is built before the campaign runs
• Whether it captures indirect effects as well as direct attribution, and whether the output is granular enough to justify specific budget decisions. 

An agency that reports reach and engagement alongside revenue contribution and incrementality is measuring reliably. An agency whose reporting cannot explain why budget should be allocated differently next quarter is not.

What commercial structure should I look for in an influencer agency?

Fees structured around activity – post volume, deliverables, creator numbers – incentivise delivery. Fees structured around commercial outcomes incentivise growth. 

Both models exist – the question is whether the agency’s incentives align with yours. It’s worth asking directly what the agency measures its own performance against. The answer can be revealing.

How can I tell if an influencer agency will contribute strategically or just execute briefs?

Ask whether the agency can show an example of data changing a recommendation – not at the end of a campaign, but during it. 

An agency with genuine near-real-time measurement capability can adjust creator mix, budget allocation, or creative direction within the campaign window. An agency relying on monthly reporting cannot act on what it learns quickly enough for it to matter.

The Question Behind the Questions

Every question on this list is a version of the same one: is this agency optimising for your outcomes, or for its own deliverables?

The pitch will make both look identical. The pre-contract conversation, asked directly enough, will not.