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STRATEGY

How to vet a B2B prospecting data vendor in 2026

Two court dockets moved this summer in ways that reach past the search tools everyone was watching and into the contact, enrichment and intent data your outbound program runs on. The question changed from how good is this data to where exactly did it come from.

STRATEGYOUTBOUNDSEP 2026

Almost nobody buying a contact database asks where the records came from. They ask about match rates, coverage in their territory, refresh frequency and price per credit. Those are the right questions for a market where supply is stable. Supply stopped being stable this summer, and the questions have not caught up.

This is not a compliance lecture. It is a continuity problem wearing a legal costume. If a supplier three layers upstream of your sequencing tool loses access to a source, your reply rates fall in a way that looks like copy fatigue, and your team will spend a month rewriting emails that were never the issue.

Aug 10, 2026
date Google filed its amended complaint against SerpApi, on the final day of a 21 day window
Jan 2025
launch of SearchGuard, the challenge system at the center of the dispute
25,000%
Google's claimed increase in SerpApi request volume over two years, per the filing
2
separate live cases, in California and New York, testing the same supply chain

Two court cases that changed the B2B prospecting data question

In the Northern District of California, before Chief Judge Yvonne Gonzalez Rogers, Google is suing SerpApi. A July ruling knocked out the broad theory that scraping results is itself a copyright violation, which was widely read as a defeat for Google. It was, and Google came back narrower. The amended complaint filed on August 10 argues that its licensors authorized the technical access controls, which would make circumventing them a violation under Section 1201 of the Copyright Act regardless of what the scraping itself is.

The evidence Google supplied is the interesting part. It points to licensing agreements that direct Google not to let third parties extract and independently commercialize the licensed content, and says one licensor specifically asked for technical measures when it suspected unauthorized scraping. That licensor is Reddit. Google also cites its own privacy policy as authorization from the individual users whose photos and reviews appear in results. SerpApi's public response on August 11 was that it remains confident in the strength of its position, and the filing has been reported in detail.

Meanwhile in New York, Judge Paul Engelmayer allowed Reddit's own claims against SerpApi and Perplexity to proceed in late July. Reddit is in a stronger position there because it owns or licenses the content directly from its users rather than through third parties. Two courts, two theories, one supply chain.

We remain confident in the strength of SerpApi's position.

None of this is about cold email, and that is exactly why it matters. The legal argument being tested is that a contract between a platform and its licensors can convert an ordinary anti-bot measure into an access control with statutory teeth, and that the obligation travels downstream to anyone commercializing the extracted content. If that argument lands, it does not stay inside the search tool category. It describes the mechanics of every enrichment provider that reads a platform which has both anti-bot measures and licensing deals, which by 2026 is all of the large ones.

THE HONEST CAVEATThese are live cases with no final ruling, and a filing is an allegation rather than a finding. The point is not to predict an outcome. It is that your supplier's continuity now depends on litigation you are not party to and will not be told about, which is a new kind of risk to carry in a channel you forecast revenue from.

The four supply chains your data actually comes from

Every B2B prospecting data product is one of four things, or a blend that the vendor would rather describe as proprietary. Knowing which one you bought tells you almost everything about how it will behave under pressure.

MODELHOW RECORDS ARE OBTAINEDCONTINUITY RISKWHAT YOU SHOULD PAY FOR IT
LicensedPaid agreements with the source platform or publisher, with terms on downstream useLow, but the licensor can change terms at renewal and often doesThe most, and it is usually worth it for the core list
Contributed or co-opUsers of the vendor's tools share their own address books and CRM records back into a poolLow legally, variable in quality, and coverage skews to whoever the contributors sell toMid range, with heavy verification of your own segment
Public and scrapedAutomated collection from sites and platforms without a licenseHighest, and the thing both live cases are aboutLeast, and never as the only source under a revenue forecast
First party and observedYour own CRM, site, product and event data, plus signals you generateNone, and it is the only asset nobody can revokeWhatever the engineering costs, because it compounds

Most commercial datasets are a blend, and blends are where the risk hides. A vendor can accurately describe a product as licensed when the licensed portion is company firmographics and the contact records underneath are scraped. Ask about the blend by field, not by product. Coverage of job titles, direct dial numbers, personal email addresses and intent signals often come from four different places inside the same subscription.

Typical starting mix, single blended vendor90%
Typical starting mix, first party and observed signals10%
Continuity-first target, licensed or contributed primary55%
Continuity-first target, first party and observed45%

Illustrative allocation of an outbound data budget under a continuity-first policy, versus the pattern we typically find on first review. Illustrative, not measured.

The vetting questions that get real answers

Vendor questionnaires produce vendor answers. These five questions produce information, because each one is hard to answer vaguely without the vagueness itself being the answer.

01Which fields in this record came from a licensed source, and which did notAsk for it field by field on a real sample record, not as a policy statement. A vendor with clean provenance can produce this quickly because they track it internally for their own risk reasons. A vendor who cannot will offer a paragraph about industry standard practices, which is the answer.
02Name every upstream supplier you resell or blendMost mid market data products are resale with a user interface on top. You want the chain, because your continuity depends on the weakest link in it rather than on the company that invoices you. Expect resistance framed as confidentiality, and expect a mutual non-disclosure agreement to resolve it if the chain is defensible.
03What happened to your coverage during the last platform access changeThere have been several this year, including Google's shift to routing result links through a passthrough address, which we covered in the piece on how rank tracking data accuracy degraded overnight. A vendor with real infrastructure will tell you what broke and how long the repair took. A vendor with a thin pipeline will say they were unaffected, which is rarely true and easy to test against your own historical match rates.
04What is your notification commitment when a source is lostNot whether they will notify you. How many days, through which channel, and to whom. Most contracts are silent on this, which means the first signal you receive is a metric moving in a dashboard six weeks later.
05Show me the deletion and suppression workflow, end to endRun one real opt out request through it while you are still in the sales process. The gap between the documented process and the operating one is where regulatory exposure lives, and it takes an afternoon to measure. This connects directly to the jurisdiction rules we mapped in the cold email compliance decision table.

What breaks first when a supplier loses access

The failure is never announced and it never looks like a data problem from inside the sequencing tool. It looks like performance decay, and performance decay gets assigned to the copywriter.

Match rate falls before volume doesEnrichment starts returning fewer complete records, and the pipeline fills the gaps with older cached values. Nothing errors. The list is the same size. It is just quietly staler, and staleness in a contact record shows up as a bounce three weeks later.
Bounce rate climbs into your sender reputationThis is the expensive part. Bad addresses damage the domain and mailbox reputation you spent months building, and reputation recovers far more slowly than it degrades. A data supply problem becomes a deliverability problem, and deliverability problems are the ones that actually cost pipeline.
Targeting drifts without anyone deciding to change itWhen coverage thins in a segment, the tooling silently shifts weight toward segments where coverage is still good. Your campaigns start reaching a different audience than the one in the plan, and the reporting shows it as a mix change rather than a supply failure.
Personalization quality drops last and hurts mostThe signals that make a first line specific, a recent role change, a funding event, a technology in use, come from the most fragile part of the supply chain. Generic outreach lands on a market that has learned to spot it, which undoes the credibility work described in why sender credibility now travels through AI search.

The instrument that catches all four early is boring and almost nobody runs it. Hold out a fixed sample of 500 accounts, re-enrich them monthly with the same vendor, and track completeness by field over time. It costs a rounding error in credits and it converts an invisible decay into a dated line on a chart. When the line steps down, you know it is supply, and you know when.

Writing B2B prospecting data terms into the contract

Procurement will happily add clauses if someone tells them which ones. Four are worth the negotiation.

First, a source change notification clause with a number of days in it. Second, a provenance warranty covering the specific fields you depend on, rather than a general statement of lawful collection. Third, an audit right on a sample of records, exercised annually, because the right to ask is what keeps the answer honest. Fourth, an exit provision that lets you take the records you have already paid for out in a usable form, with the enrichment history attached.

Expect the notification clause to be the one that gets pushed back on hardest, and hold the line on it, because it is the only one of the four that helps you before the damage rather than after. Thirty days is a reasonable ask. Fifteen is achievable at renewal if you are willing to trade something on term length. What you are buying is the chance to run a parallel source for a month rather than discovering the change through a bounce report, and that difference is worth more than most of the discount your procurement team will spend the same meeting chasing.

Then reduce the dependency itself, because contract terms are compensation for a risk rather than a removal of it. Every outbound program should be moving budget toward data nobody can revoke: your own CRM history, site and product behavior, event and community participation, and the accounts that engaged and did not convert last year. That set is smaller than a purchased database and converts several times better, and its supply chain is a conversation with your own engineering team. It is the first thing we rebuild in a cold email engagement, and in most B2B programs it turns out that the highest performing segment was already sitting in the CRM being ignored in favor of a fresher list.

DO THIS NEXTOpen your data vendor contract and search it for the word notification. If the only notifications covered are billing and service downtime, you have no continuity commitment on the thing your pipeline actually runs on. Put the five vetting questions in an email to your account manager this week, set the 500 account holdout re-enrichment running, and bring the source change clause to the next renewal. The clause costs nothing at renewal and is close to unobtainable in a crisis.

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Tyler TruffiMANAGING PARTNER, SOMETHING INC.

Tyler leads work at the intersection of SEO and generative engines at Something Inc., helping B2B brands get ranked and cited across every major AI engine.

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