tag:stacktr.ee,2026:feed Stacktree — blog and changelog Turn reports, audits and proposals into private pages on your own domain, then see who opened them and how far they read. Private by default, unguessable links, update in place. 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Stacktree tag:stacktr.ee,2026:/blog/engagement-without-recording Page engagement analytics, without recording the reader 2026-08-17T01:36:17+01:00 Steve Smith https://stacktr.ee/about We wanted to show how a shared page is read: time on page, scroll depth, where attention landed. We did it without session replay, keystrokes, or identity. The design, and why aggregate was the point. tag:stacktr.ee,2026:/blog/notion-html-block-explained What is the Notion HTML block? Uses, limits, sharing 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Notion 3.6 adds an HTML block: agents build interactive HTML, calculators, quizzes, diagrams, right on the page. A plain reading of what's announced, what's not documented yet, and the sharing gap it leaves. tag:stacktr.ee,2026:/blog/cloudflare-monetization-gateway Cloudflare Monetization Gateway: x402 at the edge, explained 2026-07-02T00:45:40+01:00 Steve Smith https://stacktr.ee/about Cloudflare announced a Monetization Gateway: charge agents for pages, APIs, datasets, and MCP tools over x402, enforced at the edge. What it does, what it leaves out, and notes from running agent payments in production. tag:stacktr.ee,2026:/blog/throwaway-dashboard Throwaway dashboards: where the agent-built one lives 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Agents now build a dashboard on demand and throw it away. The pattern works, but the HTML still needs a home. How to host an agent-built dashboard on a private link that expires on its own. tag:stacktr.ee,2026:/blog/why-agents-need-a-publish-primitive Why AI agents need a publish primitive 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Agents write HTML at the rate humans write commits. The publish step deserves its own verb — not a workflow grafted onto a static-site host. tag:stacktr.ee,2026:/blog/mcp-servers-explained-for-developers What is an MCP server? A developer reference (2026) 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about MCP is the protocol every AI assistant now speaks: Claude, ChatGPT, Cursor, Codex. How MCP servers work, what they replace, and how to build one in about 50 lines. tag:stacktr.ee,2026:/blog/private-by-default-html-hosting Private-by-default HTML hosting is the new normal 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Agents emit a lot of HTML with real data in it. Public-by-default hosting is no longer the safe baseline. Here is what the new baseline looks like. tag:stacktr.ee,2026:/blog/do-ai-agents-leak-secrets Do AI agents leak secrets? Yes. The publish step is where it becomes public. 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Agents assemble pages from whatever is in context, and context routinely contains live credentials: the bearer token that fetched the data, the key in a pasted config. What a pre-flight secret scan catches (API key prefixes, JWTs, Luhn-checked card numbers, SSNs, emails), why the MCP publish path blocks by default, what a regex net honestly cannot promise, and what to do when a key already shipped. tag:stacktr.ee,2026:/blog/mcp-2026-spec-changes MCP 2026-07-28 spec: every breaking change, with fixes 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Every change in the final MCP 2026-07-28 spec and how to migrate: stateless core, MCP Apps, Tasks, elicitation, sampling, caching. What breaks, what stays compatible, and the fix for each. tag:stacktr.ee,2026:/blog/mcp-apps-html-ui MCP Apps made HTML the official UI of agents. Where does that HTML live? 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about MCP Apps (SEP-1865) is final: Claude, ChatGPT, VS Code, and Goose all render server-shipped HTML in a sandboxed iframe. The extension standardizes emitting interactive HTML and is deliberately silent on hosting it beyond the session. What it covers, its lifecycle, and where the publish step fits. tag:stacktr.ee,2026:/blog/mcp-resources-vs-tools-vs-prompts MCP tools vs resources vs prompts: a decision table 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Tools act, resources read, prompts guide. A decision table for which MCP primitive to use, the mistakes that come from picking wrong, and what the 2026-07-28 spec changed. tag:stacktr.ee,2026:/blog/skills-vs-mcp-vs-api Skills vs MCP vs API: when you need each (2026) 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about API is the surface, MCP is the interface, a skill is the expertise on top. The three layers of an agent-facing product, explained with Stacktree, which ships all three. tag:stacktr.ee,2026:/blog/what-is-mcp-elicitation What is MCP elicitation and sampling? 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Elicitation lets an MCP server pause and ask the user for input mid-call. Sampling lets it ask the client model to reason. Together they turn servers from passive endpoints into active participants. tag:stacktr.ee,2026:/blog/sites-in-codex-explained Codex Sites is now ChatGPT Sites: what the docs don't say 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Codex Sites went GA as ChatGPT Sites on 9 July 2026: every paid plan, public publishing, custom domains. Where the official docs stop: gates, expiry, API access, and private alternatives. tag:stacktr.ee,2026:/blog/can-you-make-a-codex-site-public Can you make a Codex Site public? Plan availability and access (June 2026) 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about No public or link-only mode is documented for Codex Sites: all three access modes require an OpenAI workspace seat. Which plans have it, what OpenAI says is coming, and how to get a public link for agent output today. tag:stacktr.ee,2026:/blog/codex-sites-custom-domain Can a Codex Site have a custom domain? 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about No custom-domain support is documented for Codex Sites: a deployed Site renders only at an OpenAI-hosted, workspace-scoped URL. Why it is built that way, and how to put agent output on your own domain today. tag:stacktr.ee,2026:/blog/what-are-claude-live-artifacts What are Claude Live Artifacts? Access, plans, and the sharing gap 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about A plain reading of Anthropic docs: Claude Live Artifacts are persistent Cowork dashboards that re-query your apps and refresh on open. Paid plans, desktop only, personal and local at launch, not yet shareable. The private-link gap Stacktree fills. tag:stacktr.ee,2026:/blog/artifacts-in-claude-code-explained Artifacts in Claude Code: what they are, who can view, sharing limits (2026) 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about A plain reading of Anthropic's launch: Claude Code turns a session into live pages that update in place. Org-only and cannot be made public; Team and Enterprise beta. The external-sharing gap Stacktree fills. tag:stacktr.ee,2026:/blog/claude-artifact-cannot-republish Claude artifact unpublished and cannot be republished? Why, and the fix 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Unpublishing a Claude artifact is permanent for that version: the link dies, the Publish button deactivates, persistent-storage data is deleted, and republishing mints a new URL. Why it happens, and how to keep a link that stays put. tag:stacktr.ee,2026:/blog/stacktree-n8n-node Stacktree is an n8n node now 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about n8n-nodes-stacktree passed n8n's review and is live: any workflow can publish HTML to a private link, update it in place, gate it, and read viewer feedback. Works as an AI Agent tool. tag:stacktr.ee,2026:/blog/slack-renders-html-attachments Slack renders HTML attachments now. Rendering still is not sharing 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Slack is starting to render attached HTML files inline instead of a download or raw code. Useful, and rolling out. But a rendered file in a channel has no link, no access control, and no life outside the workspace. How to turn it into a private link. tag:stacktr.ee,2026:/blog/per-seat-pricing-ai-agents The end of per-seat pricing: agents don't have seats (2026) 2026-08-16T23:11:24+01:00 Steve Smith https://stacktr.ee/about Per-seat pricing assumes one human per seat. AI agents do not log in or take seats, so the model breaks. Original data on what static hosts charge per seat today, why the category is moving to flat and usage pricing, and where it leaves teams running agents. tag:stacktr.ee,2026:/blog/x402-mpp-explained x402 and MPP, explained by building a service that takes both 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about What x402 and MPP are, how an AI agent pays with each, and how we built a multi-rail service with agentcash where the payment turns into a site the agent or a human can then claim and manage. tag:stacktr.ee,2026:/blog/ai-agents-pay-over-mpp-tempo MPP in production: how AI agents pay Stacktree over Tempo 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about An early, live example of MPP, the agent-payment standard from Stripe and Tempo. AI agents pay Stacktree over MPP or x402 on one endpoint, with no account and no card. How it works, why the onchain method is permissionless, and the on-chain receipt. tag:stacktr.ee,2026:/blog/agent-paid-to-provision-itself An AI agent paid us $1 to provision itself: x402, end to end 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about A working x402 example on Base mainnet: an agent hits a 402, signs an EIP-3009 USDC authorization, pays $1 with no human and no card, gets a persistent API key, and publishes a live page. The whole loop, the real transaction, and the bug that cost two attempts. tag:stacktr.ee,2026:/blog/mpp-vs-x402 MPP vs x402: you do not have to choose 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about MPP and x402 are usually framed as crypto versus Stripe. That is a false binary: MPP’s evm method settles the same EIP-3009 USDC on Base that x402 does. What actually differs, what is identical underneath, and why we accept both on one endpoint, with a real on-chain MPP payment as proof. tag:stacktr.ee,2026:/blog/what-shopify-quick-proves What is Shopify's Quick? What it proves about AI-era hosting 2026-08-16T23:11:24+01:00 Steve Smith https://stacktr.ee/about Shopify built an internal host for AI-made HTML: drop a folder in, get a company-only URL. Half the company used it. Why constraints won, and the public version. tag:stacktr.ee,2026:/blog/what-is-vercel-drop What is Vercel Drop? Limits, privacy, and when to use it 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Vercel Drop (June 2026) deploys a dragged file or folder with no Git or CLI. What it does, its documented limits, and when an artifact wants a different host. tag:stacktr.ee,2026:/blog/is-agentic-score-explained is-agentic explained: what the agent-readiness score measures, and the fix that took us from 93 to 100 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about We ran Vercel's new is-agentic scanner against stacktr.ee: 93 at baseline, 100/100 a day later. The gap that mattered most was invisible to humans: 99KB of inlined CSS pushing the first heading past byte 100,000. Every fix, ranked by what it was actually worth. tag:stacktr.ee,2026:/blog/skills-sh-indexing-explained skills.sh indexing explained: why your skill is not listed, and what actually breaks 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about The agent-skills leaderboard has 191 open "request indexing" issues. We shipped a listed skill, hit two silent failures on the way, and wrote down what the index actually does: parsing, repo layout, ranking, and the diagnostic checklist we wish existed. tag:stacktr.ee,2026:/blog/what-is-grok-bot Grok Bot explained: what it is, what it costs, and what it can reach 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about xAI's Grok Bot is an AI teammate with its own cloud computer that signs into your apps by driving a browser. What it does, what it costs, why it needs no integrations, and what we found when we asked one to publish a page. Tested hands-on. tag:stacktr.ee,2026:/blog/what-is-chatgpt-sites ChatGPT Sites explained: cost, access, domains, privacy 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about ChatGPT Sites launched 9 July 2026 for all paid subscribers: ChatGPT builds and hosts live sites at openai.chatgpt.site. Who gets it, what it costs, custom domains, privacy, and what is still undocumented. tag:stacktr.ee,2026:/blog/share-chatgpt-site-with-client How to share a ChatGPT Site with a client 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about ChatGPT Sites has two audiences: your workspace, or the whole internet. There is no setting for one named client without an account. What the options actually are after the August 2026 collaboration launch, and when you need a different tool. tag:stacktr.ee,2026:/blog/what-is-design-in-claude-code What is /design in Claude Code? Tested at launch 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about The /design research preview shipped in Claude Code 2.1.234 with no docs. We ran it: artboards land as .dc.html files in your repo and the canvas publishes as a claude.ai artifact. tag:stacktr.ee,2026:/blog/what-is-cloudflare-drop What is Cloudflare Drop? Tested at launch 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Cloudflare Drop launched 8 July 2026: drag a folder or zip, get a live workers.dev site with no account, 60 minutes to claim it. We deployed through it at launch; here is how it behaves. tag:stacktr.ee,2026:/blog/claude-artifacts-public-sharing Claude artifacts now share publicly and edit multiplayer (2026) 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Claude Code shipped public sharing and multiplayer editing for artifacts on 13 July 2026. What it does, the three things it still cannot do (private gating, your own domain, non-Claude agents), and where a publish primitive fits. tag:stacktr.ee,2026:/blog/how-to-add-x402 How to add x402 payments to your API: what it actually took 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about The build guide behind our live x402 endpoint: a real 402 (v1+v2), facilitator settlement, idempotent minting, SKU pricing that cannot bleed you, discovery listings, and the mainnet gotchas. tag:stacktr.ee,2026:/blog/x402-in-production x402 in production: 30 days of a live paid endpoint 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Real numbers from a live x402 endpoint: settled payments on four rails, x402scan vs the application ledger, what buyers did after paying, and the gotchas that cost live transactions. tag:stacktr.ee,2026:/blog/loop-engineering-paywall What happens when an AI agent loop hits a paywall? 2026-08-16T23:11:24+01:00 Steve Smith https://stacktr.ee/about Loop engineering says design loops that ship while you sleep. A 402 at 3am is a stop condition you did not design. Two live rails let a loop pay and keep going. tag:stacktr.ee,2026:/blog/what-ai-agents-publish What AI agents actually publish: data from our first 80 sites 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about Early aggregate data from Stacktree: 99% of agent-published pages are a single self-contained file, 86% are under 100KB, and over half are password-gated. Agents emit private artifacts, not projects. tag:stacktr.ee,2026:/blog/dashboard-speaks-webmcp WebMCP in production: how the Stacktree dashboard speaks it 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about WebMCP lets a page register tools that in-browser AI agents can call. Stacktree's dashboard now exposes its site actions as WebMCP tools, behind one cmd-K palette. tag:stacktr.ee,2026:/blog/agent-publishes-from-the-browser Our homepage publishes for you now: an AI agent builds and ships a page, no login 2026-08-23T01:14:02+01:00 Steve Smith https://stacktr.ee/about We put a WebMCP publish tool on the public site. A browsing AI agent, or you in plain English, can generate an HTML page and ship it live from stacktr.ee with no sign-in. tag:stacktr.ee,2026:/blog/clients-never-log-into-your-portal Clients never log into your portal. The login is the reason. 2026-08-16T23:11:24+01:00 Steve Smith https://stacktr.ee/about The recurring complaint about client portals is not a missing feature, it is that the client never went in. The category knows, and its own published fix, put the invoice behind the login, gives the game away. tag:stacktr.ee,2026:/agent-loop-hosting Agent-loop hosting · replace-in-place URLs 2026-07-02T23:11:37+01:00 Steve Smith https://stacktr.ee/about When an agent iterates 30× a session, you do not want 30 URLs. Stacktree gives every artifact one URL the agent updates in place. tag:stacktr.ee,2026:/changelog Changelog — Stacktree updates 2026-08-20T01:44:52+01:00 Steve Smith https://stacktr.ee/about Dated release notes for Stacktree — what shipped, what changed, what to upgrade.