Four vendors published numbers about agentic commerce and AI advertising on October 5, 2026, and a Chief Marketing Officer (CMO) can test every one of them with a single question: what is the denominator? InMobi’s October 5, 2026 analysis of 3 million U.S. e-commerce storefronts found that 36% could support an AI agent purchase from product discovery through payment, and InMobi left 37% of those storefronts unscanned. DoubleVerify (NYSE: DV), Constructor and GreenCore Solutions Corp. (GSC) issued releases on October 5, 2026 that raise the same question in attribution, checkout and grocery procurement.
InMobi, the advertising and agentic commerce technology company, launched “Ready, Set, Agent” on October 5, 2026. The free scanner runs 80 live probes across 11 categories against any public storefront and returns an agent readiness score. InMobi’s October 5, 2026 headline states that nearly two-thirds of U.S. storefronts are “not yet ready” for end-to-end AI agent purchases. Readers who open the release find that the 64% combines three groups: 15% of storefronts with working cart and checkout and gaps in discovery, 12% that agents can read and cannot yet buy from, and 37% on platforms InMobi has yet to scan. Among the 63% of storefronts InMobi scored in its October 5, 2026 analysis, 36 of every 63 reached the top tier, which is 57% by arithmetic on InMobi’s published figures. A marketing leader who repeats the headline to a board overstates the failure rate InMobi measured: most scanned stores passed, and a third of the market has no score. InMobi also sells agentic commerce infrastructure, and a buyer weighs that interest when InMobi publishes the size of a readiness gap.
Constructor, the product discovery platform, announced Agentic Checkout on October 5, 2026. Shoppers who use Constructor’s AI Shopping Agent or AI Product Insights Agent on a retailer’s site can now pay inside the conversation through Stripe, using the Link by Stripe wallet or other payment methods. Retailers already running Constructor’s agents turn the feature on by updating Constructor’s UI library and adding Stripe credentials, according to Constructor’s October 5, 2026 release. Constructor’s feature and InMobi’s scanner address two separate surfaces. InMobi tests whether an outside agent can reach a storefront and complete a purchase, work that depends on product data, crawler access and the agentic commerce protocols a commerce platform exposes. Constructor keeps a shopper inside the retailer’s own agent, which is on-site conversion work. A retailer funds, staffs and measures the two separately, and a budget request that labels both “agentic checkout” will confuse the finance team that approves it.
Constructor’s adoption evidence gets the denominator question as well. Constructor’s October 5, 2026 release cites Stripe data that 80% of Link customers used a chat-based agent in the past month. The population is Link wallet holders, and the behavior is using a chat agent for any purpose, so a retailer cannot read the figure as the share of its own shoppers who will pay inside an agent. Constructor also restated on October 5, 2026 that the number of companies deploying its AI agents rose 900% over the past year and gave no starting count. A 900% increase from ten customers and a 900% increase from five hundred describe different businesses. Constructor’s October 5, 2026 release contains no conversion rate, order value or abandonment figure for Agentic Checkout.
DoubleVerify (NYSE: DV), the media verification and measurement company, launched attribution measurement for ChatGPT Ads on October 5, 2026 through its DV Rockerbox product. DoubleVerify’s October 5, 2026 release reports that Weight Watchers saw an attributed cost per acquisition (CPA) on ChatGPT Ads 15.3% below its “established benchmark” during “the measured period.” DoubleVerify’s release defines neither the benchmark nor the period, and it gives no spend or conversion count. Attribution assigns credit for conversions across touchpoints, and incrementality testing estimates the conversions the ads caused. OpenAI’s own October 5, 2026 advertising post describes its geo-based incrementality experiments with Haus, Measured and WorkMagic as early stage. DoubleVerify and OpenAI are also developing a brand safety and suitability evaluation pilot in a controlled testing environment, without access to private user conversations. DoubleVerify’s October 5, 2026 release gives no launch date for that pilot.
A worked example shows why the benchmark matters. The figures in this paragraph are hypothetical and come from no release. Suppose a subscription brand’s blended paid media CPA is $40 and its team spends $50,000 testing ChatGPT Ads. An attributed CPA 15.3% below that benchmark is $33.88, which is about 1,476 attributed sign-ups. Measure the same $33.88 against a branded search CPA of $25 and the channel runs 35.5% above benchmark. Then suppose a geo holdout finds that 40% of those sign-ups were incremental. The team bought 590 incremental customers at about $85 each, more than twice the blended benchmark. The same test produces all three results, and the team selects one when it selects the benchmark.
GreenCore Solutions Corp. (GSC), a Vancouver agentic commerce company, released A2A-Grocery.ai on October 5, 2026 as an agent-to-agent hub for grocery procurement across 20 markets, alongside A2A-Retailmedia.ai for grocery retail media, the category Martechipedia files under the commerce media network. GSC’s October 5, 2026 release states that grocery retailers in the U.S., Canada, the EU and the UK buy about $2 trillion of goods a year and that “that buying is now done with agents.” The evidence GSC cites includes a 2026 Forrester figure that 94% of business buyers used AI in their most recent purchase and a Cloudflare Radar figure that agents account for 64% of web traffic. Both figures describe AI use and web traffic in general, and neither counts grocery orders that an agent placed. Two trillion dollars is the size of the whole market, presented as the agent-run share. GSC’s October 5, 2026 release lists 1,973,447 points of sale and 8,619 retail banners “on the A2A-Grocery record,” names no retailer or brand customer, and omits the number of banners that transact through the hub. A trade marketing lead needs a named retailer on the other side before moving retail media budget to an agent hub.
Three decisions follow for marketing leaders as of October 5, 2026. First, pick the agent surface to fund: readiness for outside agents, or checkout inside an owned agent. Readiness is mostly product data and access work that merchandising and ecommerce teams already own, and in-agent checkout adds a payment path that finance and fraud teams review. Second, set the evidence bar that moves ChatGPT Ads from test budget to plan budget, and write down whether attributed CPA meets it or a holdout is required. Third, name the owner of any readiness score before the first scan, because a score with no owner becomes a slide.
Treat every figure in this edition as a vendor claim
Each number in this edition comes from the vendor that benefits from it, and no third party had audited any of them as of October 5, 2026. InMobi’s October 5, 2026 release does not describe how InMobi selected the 3 million storefronts or which platforms remain unscanned. DoubleVerify’s 15.3% figure covers one advertiser, Weight Watchers, over a period that DoubleVerify’s October 5, 2026 release leaves undefined. Constructor’s adoption figures in its October 5, 2026 release come from Stripe’s Link customer data and from Constructor’s own customer count. GSC’s October 5, 2026 release supports a $2 trillion claim with general AI adoption statistics and names no customers. None of the four October 5, 2026 releases reports revenue that an agent generated for a named brand.
Strategic priorities for marketing leaders
- Run the scan, then read the probes. InMobi’s tool is free and returns a report in seconds. Assign someone to open the failed probes and sort them into product data fixes your team controls and platform gaps your commerce vendor controls.
- Ask every vendor for the denominator. Request the population, the period and the baseline behind any percentage before it enters a plan.
- Define the ChatGPT Ads benchmark in writing. State which CPA you compare against and whether a holdout test is required before budget moves from test to plan.
- Separate outside-agent readiness from on-site agent checkout. Give each its own owner, budget line and success metric.
- Require a named counterpart for agent marketplaces. Before joining a hub such as A2A-Grocery.ai, ask which retailers transact through it today.
Ask the opening question of each October 5, 2026 release: what is the denominator? Then write the answer next to the number before it enters a planning deck.
Here’s The News for October 5, 2026
InMobi Launches Ready, Set, Agent and Reports 36% of U.S. Storefronts Support End-to-End AI Agent Purchases
InMobi, the advertising and agentic commerce technology company, introduced Ready, Set, Agent on October 5, 2026, a free tool that evaluates any public storefront with 80 live probes across 11 categories and returns a graded agentic commerce readiness report. InMobi’s accompanying research on 3 million U.S. public e-commerce storefronts reported that 36% were technically configured to support an agent-led purchase from product discovery through payment, 15% supported cart and checkout with gaps in discovery, 12% were readable by agents without a complete transaction path, and 37% sat on platforms InMobi had not yet scanned. InMobi stated that retailers ran more than 8,600 on-demand scans during the tool’s beta period. The tool requires no login or installation. All figures are InMobi’s own and unaudited. Read the full press release (Published: October 5, 2026 | Source: Business Wire)
DoubleVerify Launches Attribution Measurement and a Brand Suitability Pilot for ChatGPT Ads
DoubleVerify (NYSE: DV), the media verification and measurement company, announced on October 5, 2026 that advertisers can measure ChatGPT Ads as a touchpoint in DV Rockerbox attribution alongside their other channels. DoubleVerify reported that Weight Watchers’ attributed cost per acquisition on ChatGPT Ads was 15.3% below its established benchmark during the measured period; the release does not define the benchmark, the period, the spend or the conversion count. DoubleVerify and OpenAI are also developing a brand risk and suitability evaluation pilot that assesses conversational context in a controlled testing environment without access to private user conversations. The release gives no launch date for the pilot. The Weight Watchers figure is vendor-reported and unaudited. Read the full press release (Published: October 5, 2026 | Source: GlobeNewswire)
Constructor Launches Agentic Checkout, Powered by Stripe
Constructor, the product discovery platform, announced Agentic Checkout on October 5, 2026, an integration with Stripe that lets shoppers find and buy products inside one agent conversation on a retailer’s site or app. The feature is available globally in Constructor’s AI Shopping Agent and AI Product Insights Agent, supports Link by Stripe and other payment methods, and will expand to more touchpoints later in 2026. Retailers already using Constructor’s agents enable it by updating Constructor’s UI library and adding Stripe credentials. Constructor cited Stripe data that 80% of Link customers used a chat-based agent in the past month and stated that the number of companies deploying its AI agents rose 900% over the past year, without a base count. The release reports no conversion results for the feature, and the figures are vendor-reported and unaudited. Read the full press release (Published: October 5, 2026 | Source: PR Newswire)
GreenCore Solutions Corp. Releases A2A-Grocery.ai and A2A-Retailmedia.ai for Grocery Procurement and Retail Media
GreenCore Solutions Corp. (GSC), a Vancouver agentic commerce company, released A2A-Grocery.ai on October 5, 2026, an agent-to-agent hub for grocery retail procurement that GSC says is live across 20 markets in Europe, the Americas and Asia-Pacific. GSC also described A2A-Retailmedia.ai, a hub for grocery retail media, and stated that its record covers 1,973,447 points of sale and 8,619 retail banners and that its agents handled more than 100 million agentic handshakes in 2026 to date. GSC stated that about $2 trillion of annual grocery buying in the U.S., Canada, the EU and the UK is now done with agents, citing general AI adoption figures from Forrester, Gallup, Ramp and Cloudflare Radar. The hubs run on Model Context Protocol and Agent-to-Agent with a human in the loop. The release names no retailer or brand customer, and all figures are vendor-reported and unaudited. Read the full press release (Published: October 5, 2026 | Source: PR Newswire)
Frequently asked questions
What marketing technology and AI news was announced on October 5, 2026?
Four wire releases on October 5, 2026 covered agentic commerce and AI advertising measurement. InMobi launched the Ready, Set, Agent storefront scanner with research on 3 million U.S. storefronts, DoubleVerify (NYSE: DV) launched attribution measurement for ChatGPT Ads, Constructor announced Agentic Checkout with Stripe, and GreenCore Solutions Corp. released the A2A-Grocery.ai procurement hub. All performance figures in the four releases are vendor-reported and unaudited.
What did InMobi’s Ready, Set, Agent research find about AI agent readiness?
InMobi reported on October 5, 2026 that 36% of 3 million U.S. public e-commerce storefronts were technically configured for an AI agent to complete a purchase from product discovery through payment. Another 15% supported cart and checkout with discovery gaps, 12% were readable by agents without a full transaction path, and 37% sat on platforms InMobi had not scanned. InMobi’s tool scores each storefront with 80 live probes across 11 categories, and InMobi’s release does not describe how it selected the storefronts.
Does InMobi’s research show that most U.S. online stores fail AI agent checkout?
InMobi’s October 5, 2026 headline says nearly two-thirds of U.S. storefronts are not yet ready, and that 64% includes the 37% of storefronts InMobi did not scan. Among the 63% of storefronts InMobi scored, 36 of every 63 reached the top readiness tier, which is 57% by arithmetic on InMobi’s published figures. The readiness of the unscanned 37% is unknown as of October 5, 2026.
What did DoubleVerify report about ChatGPT Ads performance?
DoubleVerify (NYSE: DV) reported on October 5, 2026 that Weight Watchers’ attributed cost per acquisition on ChatGPT Ads was 15.3% below its established benchmark, measured through DV Rockerbox. DoubleVerify’s release does not define the benchmark, the measurement period, the spend or the conversion count. The figure is a vendor-reported attribution result for one advertiser, and the release reports no incrementality test.
What is Constructor’s Agentic Checkout?
Constructor announced Agentic Checkout on October 5, 2026, a Stripe integration that lets shoppers pay inside Constructor’s on-site AI Shopping Agent and AI Product Insights Agent. Constructor’s release cites Stripe data that 80% of Link customers used a chat-based agent in the past month and states that companies deploying Constructor’s agents rose 900% in a year, with no base count. The October 5, 2026 release gives no conversion or order value results for the feature.
What should marketing leaders do with the October 5, 2026 agentic commerce figures?
Marketing leaders can ask each vendor for the population, period and baseline behind its percentage before using it in a plan. For InMobi’s 36% readiness figure, that means separating scanned from unscanned storefronts, and for DoubleVerify’s 15.3% lower ChatGPT Ads cost per acquisition, it means defining the benchmark and deciding whether a holdout test is required. GreenCore Solutions Corp.’s claim that $2 trillion of annual grocery buying is done with agents rests on general AI adoption statistics cited in its October 5, 2026 release.
