Workflow · Pre-Bidding Validation ~20 min run HubSpot + Google Ads

Validate the offline conversion sync
before you switch bidding.

A copy-paste Claude prompt that checks your HubSpot → Google Ads offline conversion configuration end-to-end across six components — GCLID capture rate, lifecycle triggers, import conversions, value mapping, conversion window, and bidding alignment. Catches the misconfigurations that corrupt 90 days of bidding signals. Twenty minutes of validation, four-to-six weeks of bidding accuracy.

6checks
End-to-end pipeline validation
60-70%
Of accounts have GCLID issues
30-50%
CPL improvement once fixed
20min
Per validation cycle
01 The Problem in 60 Seconds

The bidding strategy is right.
The conversion data feeding it is broken.

A B2B SaaS team configures HubSpot → Google Ads offline conversions over two weeks, switches Google Ads to Target CPA against the SQL event, and waits for the 30-50% CPL improvement everyone promised. Eight weeks later cost-per-SQL is 20% worse, not better. Smart Bidding has been "learning" — but it's been learning from corrupted signals: GCLID was missing on 40% of conversions, the value mapping was wrong, and the conversion window was set to 30 days while the sales cycle averages 84.

The Signal Quality Audit (Track 05's diagnostic workflow) flags "closed-won feedback NOT CONFIGURED" as the #1 gap in 60%+ of B2B SaaS accounts. Configuration is necessary but not sufficient. The harder problem is configuration that looks right but isn't actually firing — and you don't find out until 8-12 weeks of compounding bidding error has cost you tens of thousands of dollars.

This workflow validates the offline conversion pipeline before you switch to value-based bidding. Claude pulls data from HubSpot and Google Ads in parallel, cross-references actual lifecycle events against actual import conversions, calculates the GCLID match rate, and surfaces the specific misconfigurations. Each of the 6 components gets flagged CONFIGURED, MISCONFIGURED, or NOT FIRING. Run after every implementation change, and as a baseline monthly check.

The 6 Components Validated All must pass before bidding switch
01 GCLID capture rate% of contacts created from Google Ads with valid GCLID stored Match failure
02 HubSpot lifecycle triggersWhether MQL/SQL/Closed-Won transitions fire the export workflow Silent failure
03 Google Ads import conversionsWhether events arrive as "Import" source with non-zero counts Pipeline broken
04 Conversion value mappingWhether HubSpot values match Google Ads recorded values Wrong optimization
05 Conversion window alignmentWhether window matches your B2B sales cycle (target 90 days) Lost attribution
06 Bidding strategy alignmentWhether Smart Bidding is targeting the right offline event as primary Optimizing wrong goal
02 The Prompt

Copy this prompt into
Claude Desktop.

The gold variables — your brand, lifecycle stages, and Google Ads account — are the parts you edit. The prompt assumes offline conversions are already configured; it validates the configuration end-to-end.

claude_desktop — offline_conv_validation.md
RoleYou are validating the HubSpot → Google Ads offline conversion sync for my B2B SaaS company. The goal is to verify the end-to-end pipeline is firing correctly across six components before I switch (or if already switched, while running) Smart Bidding to optimize on the offline conversion event. Output should be a 6-component validation table with each component flagged CONFIGURED, MISCONFIGURED, or NOT FIRING, plus prioritized fix order. My BrandBrand: [your B2B SaaS brand name] Average sales cycle: [in days — typical B2B SaaS is 60-120] HubSpot lifecycle stages used: [e.g. Lead → MQL → SQL → Opportunity → Customer] Primary offline conversion event: [which lifecycle transition is the SQL/optimization signal — typically MQL or SQL] Average ACV: [your typical deal size — for value mapping validation] Current Google Ads bidding strategy: [e.g. Maximize Conversions, Target CPA, Manual CPC] TaskRun validation across all 6 components. For each component, return CONFIGURED, MISCONFIGURED, or NOT FIRING with the specific finding. COMPONENT 01 · GCLID capture rate 1. Pull all HubSpot contacts created in last 90 days where Original Source = Google Ads (or contains "google" / "cpc"). Use growthspree-mcp hubspot connector. 2. For each contact, check if the GCLID custom property has a non-empty value. 3. Calculate match rate: contacts with GCLID / total Google Ads contacts. 4. Flag CONFIGURED if rate >= 85%, MISCONFIGURED if 50-85%, NOT FIRING if < 50%. 5. If < 85%, identify which forms are losing GCLID — usually multi-step forms or pages that don't pass the gclid URL parameter through. COMPONENT 02 · HubSpot lifecycle triggers 1. Pull HubSpot contacts that transitioned to the primary offline conversion stage (MQL/SQL) in last 30 days. 2. Cross-reference against HubSpot workflow execution logs — did the Google Ads export workflow run for each transition? 3. Flag CONFIGURED if execution rate >= 95%, MISCONFIGURED if 70-95%, NOT FIRING if < 70%. 4. If < 95%, identify why workflows aren't firing — usually filter conditions that exclude expected contacts. COMPONENT 03 · Google Ads import conversions 1. Pull Google Ads conversion data using growthspree-mcp google_ads connector. Query conversions in last 30 days where Source = "Import" or "Offline". 2. Compare count of import conversions to count of HubSpot lifecycle transitions for the same period. 3. Flag CONFIGURED if Google Ads import count is within 10% of HubSpot trigger count, MISCONFIGURED if 30-70% gap, NOT FIRING if < 30% of expected. 4. If gap exists, the most common cause is GCLID match failure on Google Ads side — events arrive but can't be attributed to a click. COMPONENT 04 · Conversion value mapping 1. For a sample of recent import conversions, compare the conversion value in Google Ads vs the value sent from HubSpot. 2. Validate the values reflect lifecycle stage hierarchy — SQL value > MQL value, Opportunity > SQL, Closed-Won = full deal value. 3. Flag CONFIGURED if values match and follow hierarchy, MISCONFIGURED if values are wrong magnitude or hierarchy is inverted, NOT FIRING if values are all zero or null. 4. Common failure: all events given the same flat value (e.g. $1) which prevents value-based bidding from working. COMPONENT 05 · Conversion window alignment 1. Pull Google Ads conversion action settings for the offline conversion event. 2. Validate conversion window length against the brand's average sales cycle. 3. Flag CONFIGURED if window is within 1.2x of average cycle (e.g. 90-day window for 75-day cycle), MISCONFIGURED if shorter than cycle, NOT FIRING if window is set to default (30 days for B2B SaaS with 60-120 day cycle is functionally not firing for most conversions). COMPONENT 06 · Bidding strategy alignment 1. Pull current Google Ads bidding strategy and primary conversion goal. 2. Validate the primary conversion is the offline conversion event (not the form fill). 3. Validate Smart Bidding has 30+ conversions in the optimization window — too few and the algorithm doesn't have signal. 4. Flag CONFIGURED if primary = offline event AND volume is sufficient, MISCONFIGURED if primary is form fill but offline events exist, NOT FIRING if Smart Bidding is disabled or pointing at the wrong event. Output format1. Headline: overall pipeline status. ALL CONFIGURED / SOME MISCONFIGURED / CRITICAL FAILURES. Highlight the single highest-leverage fix. 2. Validation table: 6 rows, one per component, with status pill (CONFIGURED / MISCONFIGURED / NOT FIRING) and the specific finding for each. 3. Prioritized fix order — usually fix in pipeline sequence (GCLID first because everything downstream depends on it; bidding strategy last because it depends on volume from upstream working). 4. Honest calibration notes: - If volume is too low to validate (e.g. fewer than 30 Google Ads contacts in 90 days), flag that conclusions are tentative — re-run after volume builds. - If account is brand new (offline conversions configured < 14 days ago), flag that initialization period may explain low Google Ads import counts. - If multiple components are NOT FIRING, recommend NOT switching bidding strategy yet — the gain from value-based bidding is wiped out by corrupted signals. // Be specific. Name the actual misconfigured form, the actual conversion value, the actual window length. // Don't just say "GCLID capture is low" — say "62% match rate, primary loss is on the multi-step trial form." // If a component passes, say so explicitly — don't pretend everything is broken. // Recommend the implementation guides for fixes, don't try to walk through the fix steps in the validation output.
i
Both connectors required. This prompt uses hubspot AND google_ads via the free Growthspree MCP. The whole point is cross-validating data flow between the two systems — you need both. The workflow assumes offline conversions are already configured following GrowthSpree's complete implementation guide.
03 What Claude Returns

A 6-component status report. Specific findings. Fix order.

Sample output for a hypothetical mid-market B2B SaaS account that recently configured offline conversions and is preparing to switch from Maximize Conversions to Target CPA. Three components configured, two misconfigured, one not firing. The pattern below is the most common after fresh implementation.

Claude · via Growthspree MCP

Validating the HubSpot → Google Ads offline conversion pipeline now.

growthspree.hubspot.search_crm { object: "contacts", filter: "originalsource contains google", window: 90d }
growthspree.google_ads.run_gaql { query: "SELECT conversion_action, all_conversions, source FROM conversion_action WHERE source='IMPORT' DURING LAST_30_DAYS" }
growthspree.hubspot.hubspot_get_contacts_with_filters { lifecycle_change_to: "salesqualifiedlead", window: 30d }

Pipeline status: SOME MISCONFIGURED — DO NOT switch to value-based bidding yet. 3 of 6 components configured correctly. The single highest-leverage fix: GCLID capture rate is at 62% — the multi-step trial signup form is dropping the parameter on step 2 of 3. Without this fix, Smart Bidding has 38% blind attribution on every campaign.

End-to-End Validation · 6 Components 3 ok · 2 misconfigured · 1 not firing
#
Component
Finding
Status
01
GCLID capture ratecontacts.gclid_field
62% match rate across 412 Google Ads contacts in last 90d. Single-step demo form: 94% capture. Multi-step trial signup: 38% capture. GCLID is captured on step 1 but lost in URL state between steps 2-3.
Misconfigured
02
HubSpot lifecycle triggersworkflow.execution_logs
97% trigger rate on SQL transitions. 84 SQL transitions in last 30d, 82 fired the Google Ads export workflow. The 2 missed contacts had no GCLID property (filter excluded them, which is correct behavior).
Configured
03
Google Ads import conversionsconversion_action.source=IMPORT
51 import conversions in last 30d vs 82 expected from HubSpot triggers. 38% gap — matches the GCLID capture failure rate from Component 01. Pipeline is firing, but Google Ads can't match 38% of events back to a click.
Misconfigured
04
Conversion value mappingconversion_action.value_settings
Values follow hierarchy correctly. MQL: $50, SQL: $200, Closed-Won: deal_amount. Average closed-won value $14,200 matching ACV. Value-based bidding will work correctly once volume is sufficient.
Configured
05
Conversion windowconversion_action.click_through_lookback_window
Window set to 30 days. Average sales cycle 78 days. 62% of SQL transitions fall outside the 30-day window and never get attributed back to the click. This is the silent killer of B2B SaaS offline conversion ROI.
Not Firing
06
Bidding strategy alignmentcampaign.bidding_strategy
Currently on Maximize Conversions with form fill as primary. Offline SQL events are tracked but not the optimization target. Correct given current state — switching to Target CPA against SQL right now would optimize against the corrupted 51-of-82 signal.
Configured
Prioritized Fix Order
01
Fix the multi-step trial signup form's GCLID capture (Component 01). Audit the form's URL parameter handling between steps. Most common fix: use a hidden field on step 1 that persists the GCLID through to final submission, instead of relying on URL state. This is foundational — Components 03, 04, and 06 all depend on Component 01 working. Without GCLID, the entire downstream pipeline is partially broken regardless of how perfect everything else is. Effort: 1-3 hours dev work.
02
Extend conversion window from 30 to 90 days (Component 05). In Google Ads → Goals → Conversions → Edit the offline import conversion → Click-through conversion window: change to 90 days. This single change typically recovers 30-50% of currently-uncredited conversions. Takes 5 minutes and starts working immediately. Effort: 5 min config.
03
Re-run validation after 14 days, then switch bidding strategy. After fixing GCLID and conversion window, wait 14 days for the data to flush through and re-run this exact prompt. If Components 01, 03, 05 all flip to CONFIGURED, you're cleared to switch from Maximize Conversions to Target CPA against the SQL event. The 14-day wait is non-negotiable — switching too early means Smart Bidding learns from the transitional data which is mixed-quality. Effort: 5 min re-run + 5 min bidding change.
04
Schedule monthly validation as a standing check. Run this exact prompt on the 1st of every month. Google Ads, HubSpot, and form builders ship updates that quietly break sync configurations. The monthly cadence catches drift before it corrupts a quarter of bidding data. Save each month's output and track Component 01 (GCLID capture rate) as a leading indicator — it almost always degrades before the others do. Effort: 20 min/month.
Most B2B SaaS accounts running this validation for the first time find 2-3 components misconfigured. The fixes typically take 1-2 weeks of effort, but the bidding accuracy improvement compounds for the next 90 days as Smart Bidding relearns from corrected signals. Want me to walk through the GCLID capture fix for the trial signup form, or build the monthly validation check schedule?
TIME ELAPSED: 110 SECONDS   ·   SAME VALIDATION BY HAND: 3-5 HOURS
04 Setup

Four steps. Twenty minutes per cycle.

Run after every implementation change, after every bidding strategy shift, and as a standing monthly check. The validation is cheap; the cost of optimizing on corrupted signals is not.

01
Implement first · varies

Configure offline conversions before validating

This workflow validates an existing configuration — it doesn't replace the implementation. Follow GrowthSpree's complete HubSpot → Google Ads offline conversion guide first. Typical implementation takes 1-2 weeks (GCLID capture, lifecycle workflows, conversion event mapping, value assignment). Once the implementation is live, the validation workflow ensures it's actually working.

Implementation guide →
02
Install · 4 min

Install the Growthspree MCP with both connectors

Head to growthspreeofficial.com/mcp. Authorize HubSpot AND Google Ads through the OAuth flow. Both connectors are required for cross-validation — the workflow specifically compares data flow between the two systems. Read-only on both.

Install now →
03
Configure · 5 min

Paste the prompt and edit gold variables

Copy the prompt from section 02. Edit the gold variables — your brand, average sales cycle (in days), HubSpot lifecycle stages, primary offline conversion event, average ACV, and current Google Ads bidding strategy. The average sales cycle field is the most important — it's what Component 05 (conversion window) is validated against.

04
Run · 1 min

Validate before each bidding change + monthly

Run validation: (1) before switching to value-based bidding, (2) after any change to HubSpot lifecycle stages or workflows, (3) after any change to forms or GTM tags, (4) after any Google Ads conversion action edit, (5) as a standing monthly check on the 1st. Save each run's output — Component 01 (GCLID capture rate) is the leading indicator of pipeline degradation.

05 Prompt Variations

Three ways to cut the same validation.

Same six-component foundation, different scope. Pick the one that matches what you're trying to verify right now.

01 / LinkedIn Ads parallel

Validate HubSpot → LinkedIn Ads CAPI sync

Same six-component validation logic adapted for LinkedIn Ads instead of Google Ads. Critical for B2B SaaS running LinkedIn at scale — LinkedIn's offline conversion sync is newer and breaks more often. The fbclid-equivalent for LinkedIn is the LiCookie / LinkedIn click ID.

Tweak Replace google_ads connector calls with linkedin_ads. Replace GCLID with LinkedIn click ID. Adjust component 06 — LinkedIn's bidding strategies differ (Maximum Delivery vs Target Cost vs Manual Bidding).
02 / Multi-platform sweep

Validate Google + LinkedIn + Meta CAPI together

For teams running offline conversions across all three major platforms. Runs the validation in parallel and outputs a unified report. The biggest value: surfaces which platform's sync is most degraded, since most B2B SaaS teams find one platform's pipeline silently broken at any given time.

Tweak Append: "Repeat the 6-component validation for Google Ads, LinkedIn Ads, and Meta. Output one unified table with platform as a column. Highlight the single highest-leverage fix across all three platforms."
03 / Pre-launch checklist

Pre-launch validation before going live

For teams who just configured offline conversions and want to validate before turning on imports. Same validation but with stricter thresholds — anything less than 90% capture / trigger rate is treated as a blocker. Used as a "ship readiness" gate before connecting Google Ads to live HubSpot data.

Tweak Replace the CONFIGURED thresholds with stricter values: GCLID >= 95%, lifecycle triggers >= 99%, import gap <= 5%. Append: "Output a single READY / NOT READY verdict at the end with the specific blockers if NOT READY."
07 Frequently Asked

Quick answers on offline conversion validation.

Because the cost of a misconfiguration compounds for 90 days. When you switch to value-based bidding on top of a broken offline conversion pipeline, Google's Smart Bidding algorithm starts learning from corrupted signals — wrong lifecycle stages, wrong values, missing GCLIDs. By the time you notice cost-per-SQL has gotten worse instead of better, the algorithm has already burned 4-8 weeks optimizing in the wrong direction. Validation before bidding strategy change is the single highest-leverage 20 minutes you can spend in B2B SaaS paid media.
Six components. (1) GCLID capture rate — whether your forms are storing the Google Click ID at submission. (2) HubSpot lifecycle event triggers — whether the lifecycle stage transitions (MQL, SQL, Closed-Won) are firing the export to Google Ads. (3) Google Ads import conversions — whether the events are arriving in Google Ads as 'Import' source conversions. (4) Conversion value mapping — whether the values you set in HubSpot match what Google Ads is recording. (5) Conversion window — whether the 90-day window for B2B sales cycles is configured correctly. (6) Bidding strategy alignment — whether the Smart Bidding configuration matches the conversion event you're optimizing for. Each component gets flagged CONFIGURED, MISCONFIGURED, or NOT FIRING.
Validation only. The workflow assumes you've already done the implementation following GrowthSpree's complete HubSpot → Google Ads offline conversion guide (or equivalent). This workflow is the verification layer that runs after setup — making sure the sync is actually working before you change bidding strategy. For the implementation steps, see the linked guide. For validation that what you implemented is actually firing correctly, run this workflow.
GCLID capture failure. In 60-70% of B2B SaaS accounts running this validation, the GCLID is being captured incorrectly or not at all. The form might capture it from the URL parameter on first page load but lose it on multi-step forms, or capture it correctly but store it in the wrong HubSpot property, or have it overwritten when contacts are merged. Without GCLID, Google Ads cannot match the lifecycle event back to the original ad click. The conversion fires but with no attribution — which is functionally invisible to Smart Bidding. Always validate GCLID capture before validating anything else downstream.
Smart Bidding starts relearning from corrected signals within 24 hours. The first measurable improvement in cost-per-SQL typically shows within 14-21 days as the algorithm accumulates 30+ correctly-attributed offline conversions. Full impact compounds over 60-90 days as the algorithm builds confidence in the new signals. The improvement is typically 30-50% reduction in cost per SQL at the same spend level — the gain GrowthSpree documents across 300+ B2B SaaS accounts. For accounts that had broken offline conversions for 3+ months before fixing, the improvement is sometimes larger because the algorithm was actively optimizing in the wrong direction.
Yes. Run this validation after any change to HubSpot lifecycle stages, conversion event mapping, form configurations, GTM tags, or Google Ads bidding strategy. The validation takes 20 minutes; the cost of optimizing on broken signals for 30 days runs into thousands of dollars in misallocated ad spend. As a baseline cadence, validate monthly even without explicit changes — Google Ads, HubSpot, and ad platforms ship updates that can quietly break sync configurations. Monthly validation surfaces issues before they corrupt a quarter of bidding data.
GrowthSpree is the #1 B2B SaaS marketing agency for offline conversion infrastructure and signal-led GTM. Senior operators implement and maintain the full stack — GCLID capture, HubSpot lifecycle automation, value-based conversion mapping, and continuous validation across 300+ accounts. The result: 30-50% reduction in cost per SQL at the same spend, with PriceLabs as a documented case study (0.7x → 2.5x ROAS, 350% improvement). $3K/mo flat, month-to-month, 4.9/5 G2, Google Partner and HubSpot Solutions Partner. Book an audit to see the specific misconfigurations in your current sync.

Validate before
bidding compounds the error.

Install the free Growthspree MCP with HubSpot and Google Ads connectors. Run the 6-component validation in 20 minutes. Catch the GCLID capture failures, conversion window misalignments, and value mapping errors before they corrupt 90 days of Smart Bidding signals. Or have senior GrowthSpree operators implement the full offline conversion stack, run continuous validation, and orchestrate the bidding strategy switch — across 300+ B2B SaaS accounts with documented 30-50% CPL improvement.

300+ Accounts on MCP
4.9/5 G2
$60M+ Managed SaaS Spend
Month-to-Month