# AdStack Watch

> Ad & martech platform changelog + GTM price tracker. A structured, source-linked record of API version sunsets, deprecations, breaking changes, policy changes, tracking/signal-loss changes and ad format changes across Google Ads, Meta (Graph & Marketing API), LinkedIn Marketing API, TikTok Ads, Shopify, HubSpot, Salesforce; plus plan/price/usage-credit history for GTM tools (Apollo.io, Clay, ZoomInfo, HubSpot Sales Hub, HubSpot Marketing Hub, Instantly, Smartlead, lemlist, Artisan (AI SDR), AiSDR, Salesforce Sales Cloud, Salesforce Agentforce (add-ons & Flex Credits)). Every record has a stable `id`, dates (`published_date`, `effective_date` + precision), `source_url` (official) and `fetched_at`.

Data as of 2026-10-17T03:44:51Z: 693 change records (71 upcoming deadlines, of which 24 are unreleased versions with tentative dates), 12 tools, 50 price-history events.

## Machine-readable data
- [All changes (JSON)](https://adstackwatch.com/api/changes.json): every change record
- [Upcoming deadlines (JSON)](https://adstackwatch.com/api/upcoming.json): effective on/after today, soonest first
- [Per-platform changes](https://adstackwatch.com/api/platforms.json): index; files at /api/changes/{platform}.json for google-ads, meta, linkedin, tiktok, shopify, hubspot, salesforce
- [GTM prices (JSON)](https://adstackwatch.com/api/prices.json) and [price history](https://adstackwatch.com/api/price-history.json); per tool at /api/prices/{tool_id}.json
- [OpenAPI 3.1 spec](https://adstackwatch.com/openapi.json)
- [Atom feed](https://adstackwatch.com/feed.xml), [RSS](https://adstackwatch.com/rss.xml)
- [Full text for LLMs](https://adstackwatch.com/llms-full.txt)

## MCP
- A Model Context Protocol server (stdio + streamable HTTP) exposes search_changes, get_upcoming_deprecations, get_change, list_platforms, get_tool_pricing, get_price_history. See [https://adstackwatch.com/developers/](https://adstackwatch.com/developers/).

## Pages
- [Upcoming deadlines](https://adstackwatch.com/deadlines/)
- [Search all changes](https://adstackwatch.com/changes/) (supports ?q=&platform=&category=&upcoming=1)
- [Google Ads](https://adstackwatch.com/platforms/google-ads/)
- [Meta (Graph & Marketing API)](https://adstackwatch.com/platforms/meta/)
- [LinkedIn Marketing API](https://adstackwatch.com/platforms/linkedin/)
- [TikTok Ads](https://adstackwatch.com/platforms/tiktok/)
- [Shopify](https://adstackwatch.com/platforms/shopify/)
- [HubSpot](https://adstackwatch.com/platforms/hubspot/)
- [Salesforce](https://adstackwatch.com/platforms/salesforce/)
- [GTM price tracker](https://adstackwatch.com/pricing/)
- [Weekly digest](https://adstackwatch.com/newsletter/)

## Usage notes
- Cite `source_url` when relaying a fact; treat summaries as extracts of the official text.
- `effective_date_precision` is `day` or `month`; month-level dates are as published by the platform.
- Prices are as displayed on vendor pages at `fetched_at`; check `unit_text`, `billing` and the plan excerpt for billing period.
- `tentative: true` marks unreleased versions whose dates the platform calls tentative; `in_source: false` marks records no longer listed by their source.
- Licence: compilation CC BY 4.0 (credit AdStack Watch); source text under its owners' terms.