Agentic Commerce Protocol (ACP)
ACP lets agents complete purchases on a person's behalf.
- Category
- Commerce
- Standard
- Emerging checkEmerging
- Off by default, turn on in settings
Who supports it
ChatGPTSupported (announced)
Published 29 Sept 2025 · last checked 9 Oct 2026: Stripe powers Instant Checkout in ChatGPT and releases Agentic Commerce Protocol (Stripe newsroom)agenticcommerce.dev states 'OpenAI is the first AI platform to implement ACP with ChatGPT'. Needs review: per search snippets of https://openai.com/index/powering-product-discovery-in-chatgpt/ (2026-03-24; 403 to our fetcher), OpenAI found Instant Checkout's first version not flexible enough and now lets merchants use their own checkout, with ACP used mainly for product feeds and discovery. This may warrant downgrading to partial once a human confirms it.
CopilotSupported (announced)
Published 8 Jan 2026 · last checked 9 Oct 2026: Conversations that Convert: Copilot Checkout and Brand Agents (Microsoft Advertising blog)'Microsoft is adopting open standards like the Agentic Commerce Protocol (ACP) to ensure merchant onboarding is seamless and scalable.' Copilot Checkout is US-only on Copilot.com and the Copilot mobile app, with PayPal, Shopify and Stripe as partners.
25 others: no evidence yet. See every agent and browser
What it checks
ACP defines how an agent completes a checkout for the person it is working for, handing over payment details the merchant can charge.
The extension requests /.well-known/acp.json and /.well-known/agentic-commerce, in that order, and passes on the first one that
returns a non-empty JSON document.
Commerce protocols are new, and most sites have no reason to support them, so absence is N/A rather than a failure.
Results
| Status | When |
|---|---|
| Pass | One of the paths returns a non-empty JSON document |
| N/A | Nothing was found |
How to fix
Publish an ACP descriptor at /.well-known/acp.json to support agent-driven checkout. Serve it as JSON (Content-Type: application/json); the extension only
confirms a JSON document is there and does not validate its contents.
These standards are still settling, so follow the protocol’s own documentation for what the descriptor should contain.
Support by agent and browser
Announced means the vendor’s own docs or announcement say so. Published is the date on the vendor’s own page, where it has one. Checked is the last time our weekly research found that page still saying so.
| Agent | Status | Source |
|---|---|---|
| AI assistants | ||
| ChatGPT OpenAI | Supported (announced) | Stripe powers Instant Checkout in ChatGPT and releases Agentic Commerce Protocol (Stripe newsroom) Published · Checked agenticcommerce.dev states 'OpenAI is the first AI platform to implement ACP with ChatGPT'. Needs review: per search snippets of https://openai.com/index/powering-product-discovery-in-chatgpt/ (2026-03-24; 403 to our fetcher), OpenAI found Instant Checkout's first version not flexible enough and now lets merchants use their own checkout, with ACP used mainly for product feeds and discovery. This may warrant downgrading to partial once a human confirms it. |
| Copilot Microsoft | Supported (announced) | Conversations that Convert: Copilot Checkout and Brand Agents (Microsoft Advertising blog) Published · Checked 'Microsoft is adopting open standards like the Agentic Commerce Protocol (ACP) to ensure merchant onboarding is seamless and scalable.' Copilot Checkout is US-only on Copilot.com and the Copilot mobile app, with PayPal, Shopify and Stripe as partners. |
No evidence yet25
- Claude
- Gemini
- Perplexity
- Meta AI
- ChatGPT Atlas
- Comet
- Dia
- Gemini in Chrome
- Edge Copilot Mode
- Claude Code
- Cursor
- Codex
- GitHub Copilot
- Windsurf
- CCBot
- Applebot
- Amazonbot
- Bytespider
- Cohere
- Mistral
- DuckAssist
- Chrome
- Edge
- Firefox
- Safari
Names and marks belong to their owners and are used only to identify products. None of these vendors is affiliated with Sitebulb. Spotted something out of date? Send a correction.
Adoption on the top 100 sites
0 of 91 measured sites implement it
Overview
How this rating is worked out3 of 9 points
| Factor | Points | Why |
|---|---|---|
| Vendor support | 2 / 3 | 2 vendors supporting, 0 partly or planned |
| Top-100 adoption | 0 / 3 | 0% of measured sites |
| Spec maturity | 1 / 3 | Single-vendor spec |
8 or more points is Established, 5 to 7 is Gaining traction, 2 to 4 is Speculative and under 2 is Stalled. A feature is also Stalled when more vendors have said no than yes. Read the spec.
Community insights
No community insights for this feature yet.
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