Week 37, 2026
Coverage window 4–10 September 2026.
For the interpretation of this week, and why three platforms answering the same question in three different places matters more than any one of the answers, see the companion essay: Weekly MarTech Signals That Matter to Me: Part 19, Week 37. This page is the record; the essay is the read.
This week’s record
Three of the nine CEP platforms published what their agent may actually do, and they put the answer in three different places: the tool list, the tenant, and the API.
- Klaviyo Headless launched at K:BOS on 9 September: more than 260 MCP tools callable from Claude, ChatGPT or any AI system, with the vendor stating that an agent can “read, write, and go live the same way you would inside Klaviyo, without anyone opening Klaviyo at all.” No permission model, session lifetime or revocation path accompanies it.
- Braze’s remote MCP server is now fully documented, closing a gap this record has carried for five editions. The published table lists 71 tools, 34 of them write, including
launch_campaignand six delete tools, bounded by a no-PII rule, by the dashboard user’s own permissions, and by revocation that applies on the next request. Customers using IP allowlisting are excluded. - HubSpot enforced the tenant’s rules on the wire. From the
/2026-09/API version shipped on 8 September, admin-configured validation rules apply to all CRM API write paths, and pipeline delete endpoints validate references by default. - An Adobe Campaign customer deadline passed inside the window. Release 8.9.3 required external URLs used in delivery content and attachments to be added to the instance allow list by 5 September 2026 to avoid impact to affected deliveries.
- Klaviyo shipped consent-conditional email click tracking on 8 September, the second of the nine in a month to ship a tracking control framed as a data-protection mechanism, after Adobe Campaign’s Web UI open-tracking toggle.
- The FTC rescinded its 2021 Policy Statement on Breaches by Health Apps and Other Connected Devices on 9 September. The Health Breach Notification Rule, updated in 2024 to cover health apps and connected devices directly, stands.
What changed this week
| Platform | What changed | Source |
|---|---|---|
| 6senseShipped (Sep 2)Agentic AI / MCP | MCP server moves from beta toward GA; Account Summary, People Search/Details and Contact Enrichment tools; self-enabled from the AI Settings page; PII intentionally removed from people search results | Release notes |
| Adobe CampaignDeadline passed (Sep 5)Deprecation / cutover | External URL allow list for delivery content and attachments: customers required to complete the update by 5 September 2026 to avoid impact to affected deliveries | v8 release notes |
| Adobe Journey OptimizerShipped (Sep 3)Agentic AI / MCP | Content Management MCP tools in CX Coworker: read content templates, fragments, landing pages and inline message content, and create content, update templates, create, update, clone and publish fragments, and update inline channel action content | Release notes |
| Adobe Journey OptimizerShipped (Sep 2)Agentic AI | Analyze Journey Anomalies skill in CX Coworker; detects spikes, drops and flatlines against historical baselines, then runs read-only diagnostics for a likely root cause | Release notes |
| Adobe Journey OptimizerShipped (Sep 4)Product release / consent | Mandatory consent checkbox for landing page forms; a form checkbox can be required before submission | Release notes |
| Adobe Journey OptimizerShipped (Sep 8)Product release | Decisioning supported in Journey simulation: Content Decision nodes, the Optimize activity’s Targeting rule method, and actions carrying decisioned content. Ranking by AI Model - Personalization is supported but returned offers may vary between runs | Release notes |
| BrazeDocumented (date not established; remote server announced Jul 23)Agentic AI / MCP | Remote MCP server documented in full: 71 tools, 34 write, including launch_campaign, stop_campaign, catalog and message deletes, and send_operator_prompt. No user-level PII tools. Agents inherit the dashboard user’s permissions; permission changes apply on the next request and deactivated users lose access. Locally hosted beta server deprecated. IP allowlisting customers cannot use it | About the MCP server · Available functions |
| BrazeShipped (documented; stated for w/c Aug 31)Product release | Cloud Data Ingestion for Azure Blob Storage now documented alongside S3 and GCS; Event Grid publishes a Blob Created event to an Azure Storage queue that Braze reads | File storage integrations |
| CDW / LovelyticsAnnounced (Sep 2, pending close)M&A | CDW to acquire data and AI services firm Lovelytics, a Databricks Brickbuilder partner, for approximately $525 million, expanding its Data & Analytics Practice | CDW investor release |
| FTCFinal (Sep 9)Regulatory | 2021 Policy Statement on Breaches by Health Apps and Other Connected Devices rescinded; the FTC cites the 2024 Health Breach Notification Rule update as already covering health apps and connected devices | FTC press release |
| HubSpotShipped (Sep 8)Breaking change | CRM API write validation enforcement: from the /2026-09/ API version, admin-configured validation rules are enforced on all CRM API write paths | Developer changelog |
| HubSpotShipped (Sep 8)Breaking change | Pipeline and pipeline stage delete endpoints validate references by default from the 2026-09 API version | Developer changelog |
| InsiderShipped (Sep 7)Product release | Android SDK 17.1.0 and 17.1.0-nh: promotional opt-in attribute for targeting App Push campaigns; ProGuard rules bundled in the SDK package; test device mode enabled from the command line on debuggable builds | Android SDK changelog |
| KlaviyoLaunched (Sep 9); SQL and Personalization PreviewAgentic AI / MCP | Klaviyo Headless: 260+ MCP tools and capabilities callable from Claude, ChatGPT or any AI system, with an agent able to “read, write, and go live” without opening Klaviyo. Also SQL in the Klaviyo Data Platform (Preview, returns the query that produced the answer), the Personalization layer (Preview), Composer scheduled tasks and custom Skills, and Customer Agent localisation in 100+ languages | K:BOS 2026 announcement |
| KlaviyoShipped (Sep 8)Product release / consent | Manage Click Tracking: disable email click tracking account-wide, for specific recipients based on consent, or for individual links | What’s New |
| KlaviyoShipped (Sep 8)Product release | Channel performance dashboard across Email, SMS, WhatsApp and Push; Custom HTML block for In-App Forms | What’s New |
| KlaviyoShipped (Sep 1, late capture)GTM data | First-Party ID: extends the Klaviyo cookie window from 24 hours to 7 days on Safari and other restrictive browsers | What’s New |
| MoEngageShipped (August release, published late)Agentic AI | August release published after four editions unavailable. Multi-agent coordination for Custom Agents: delegation to sub-agents, parallel execution, parent consolidation, workspace-level memory across sessions, scheduling, and model tier selection with Sonnet 5 as default | August 2026 release notes |
| OptimizelyLaunched (Sep 1, late capture)Product release | Purpose-Built AI Models for Marketing; vendor date now established after the previous edition declined to enter it undated | Press index |
| SalesforceShipped (w/o Sep 7)Agentic AI | Create and Update Records with Agentforce Coworker added to the Winter ‘27 change log; seven previously announced Agentforce features became available, including Connection Instructions, agent version compare and merge, and four Agentforce Voice items | Winter ‘27 Release Note Changes |
| Treasure AIShipped (Sep 8–9)Product release | Six September items in window: SMS link shortening and click tracking, LINE OA asynchronous streaming import, Airship channels import, Trino table and column comments, and two Treasure Workflow enhancements | September 2026 release note |
| Treasure AIShipped (Sep 2, late capture)GTM data / cost | Snowflake query tags in Composable Audience Studio: a structured JSON QUERY_TAG on every segmentation, activation, lookup, validation, metadata and metering query, naming the application, parent segment, segment or activation, and operation type, visible in ACCOUNT_USAGE.QUERY_HISTORY with no configuration | September 2026 release note |
| TwilioBeta (Sep 8)Product release | Webhook Configuration API in Public Beta: per-URL configuration of outbound webhook authentication and delivery, with OAuth 2.0 client credentials or Shared Key signatures, plus timeouts and retries | Changelog |
| TwilioBeta / GA (Sep 4, Sep 9)Product release | ElevenLabs voices for <Say> on Flash v2 and v2.5 (Sep 9); international call forwarding compliance blocking for Spain and France (Sep 4) | Changelog |
No changes this week (scanned, nothing net-new)
Scanned for the 4–10 September window with no net-new release:
- ActiveCampaign: newsroom scanned, no in-window item.
- Adobe Campaign Web User Interface: page stamped 4 September, August ‘26 release of 18 August still current.
- Adobe Journey Optimizer B2B: page stamped 4 September, 2026.8 of 14 August still current.
- Adobe Marketo Engage: page stamped 8 September, August ‘26 release still current, September ‘26 due 25 September. Email Designer Script Builder still “Coming soon”, fourth consecutive edition.
- Adobe Real-Time CDP / Experience Platform: 18 August still current. The destinations catalog data-type filter, stated as rolling out through the first week of September, remains unconfirmed.
- Bloomreach Engagement: 1.317 of 2 September still current; 1.318 due 16 September on a fortnightly cadence.
- Braze release cycle: 20 August still current. On a strict four-week cadence, nothing was due; next release 17 September.
- Google Antigravity: 2.12.2 of 3 September, no in-window release. (Also in the AI Watch.)
- Insider iOS SDK: 16.0.0 of 31 August still current. None of the four cross-platform bridges has received App Frames: React Native 8.1.0 (5 Aug), Flutter 5.2.0 (20 Aug), Cordova 4.0.0 (16 Apr), Expo undated.
- Iterable: August’s Monthly Release of 18 August still current.
- Optimove: August 2026 is the newest What’s New; September not yet published on a monthly cadence.
- Pega: newsroom scanned, no in-window item.
- Salesforce Marketing Cloud Engagement: last change week of 28 August.
- Salesforce Marketing Cloud Next: last change week of 30 August.
- Salesforce Account Engagement, Marketing Intelligence, Loyalty Management: “No changes since the initial publication.”
- Salesforce Personalization: the two entries added the week of 17 August remain the newest; no September section.
- Sprinklr: newsroom scanned, no in-window item.
- Tealium: 2 September entries still newest.
- Zeta Global: newsroom scanned, no in-window item.
Scanned but unreachable, reported as source failures rather than vendor silence:
- Segment (Twilio):
community.segment.comno longer resolves in DNS, andsegment.com/release-notes/redirects into it. A replacement route was found during this run: the Twilio changelog filtered to the seven Segment product tags, which produces a stable, bookmarkable URL. The route works but the feed carries nothing newer than 21 January 2026, so Segment is recorded here as monitored with an unconfirmed feed rather than as a vendor with no news. - Mailchimp (Intuit): no usable release-notes route, fifth edition.
- Cordial: both monitored routes return 404, second confirmation.
- Insider platform-level release notes: the academy carries SDK changelogs only; web, email and panel-side changes remain untracked.
Watching next (Week 38)
- Braze release on 17 September, and whether the MCP tool inventory appears in it.
- Bloomreach 1.318 on 16 September.
- Twilio: no new Functions Classic from 13 September, migration window to 26 October; Event Streams US East regional IP
3.80.20.0/25from 15 September. - Marketo September ‘26 release on 25 September, and whether Script Builder ships with documentation.
- Salesforce Agentforce Platform Enabled by Default: the rolling window into existing orgs began in September and the release note has not been updated. Which orgs, when, and whether opting out is supported.
- Klaviyo Compliance Hub: named once alongside Headless with no detail, and it is the only governance artefact in the announcement.
- Insider bridges: whether React Native, Flutter, Cordova or Expo receive App Frames.
- Adobe Experience Platform destinations catalog data-type filter: third edition unconfirmed.
- Garante open-tracking pixel compliance term, 29 October, now paired with two shipped vendor controls.
How this is compiled. This record is built from official release notes, changelogs and vendor newsrooms, read as rendered pages in a browser, with an AI first-pass scan followed by human review and editing. Every item is checked against a primary source before it appears here, and aggregator listings are used to detect items, never to date or cite them. Anything not confirmed against a primary source is flagged inline. Dates and status are as of the current-as-of date above and can change.
Corrections and method notes. Corrections are welcome and late-captured items are logged transparently rather than backdated. This edition carries five late captures from 1 to 3 September that no earlier edition reported: Klaviyo First-Party ID, Adobe Journey Optimizer’s Content Management MCP tools and Analyze Journey Anomalies skill, Treasure AI’s Snowflake query tags, and the 6sense MCP server. Three aggregator date problems were caught and corrected before publication: CDW / Lovelytics listed 9 September against a vendor date of 2 September; Klaviyo Headless listed 10 September against 9 September; and a Tealium listing of 10 September that traces to a third-party roadmap article rather than to any vendor event. The Braze MCP documentation is entered without a date because no canonical publication date could be established; the remote server itself was announced on 23 July 2026. Two source failures are reported as failures rather than as vendor silence: Segment’s release-notes domain no longer resolves, and Mailchimp still has no route. A replacement Segment route was identified before publication, the Twilio changelog filtered to its seven Segment product tags, and it is live but carries nothing dated later than January 2026, so Segment is listed as monitored with an unconfirmed feed. One method note: the local file shell was unavailable for this entire run because of the Windows defect Anthropic documented on 10 September, so this edition was compiled in a cloud workspace.
MarTech Watch is compiled and edited by Andrea Veggiani, Head of Cross-Channel Marketing & MarTech Solutions at BitBang.