How much did it cost to build this site? (building in public)
convomargin.pages.dev was built with AI agents in Cursor over five days. This page is a transparent log of prompts, failures, retries, and deploy reboots, with modeled LLM cost using the same calculator rates on the home page. Not invoiced data, but the kind of end-to-end trace ConvoMargin is built to automate.
TLDR: about 54 agent sessions, 8 failed production deploys, roughly $3.97 modeled LLM spend, $0 revenue so far, margin deeply negative. Headroom measured savings today: $0.00 (0 tokens) — see note below.
Modeled at mid-tier rates (same as the home calculator). Measured Headroom stats come from the local proxy
(/stats); updated when you run scripts/sync-build-log.ps1 and deploy.
MCP alone does not log API spend until the agent calls compress tools or Cursor routes API traffic through the proxy.
Build metrics last synced: 2026-07-19
| When | Event | Type | Outcome | Est. cost |
|---|---|---|---|---|
| Jul 12 | Astro + Cloudflare scaffold merge | Agent prompt | Partial fail, recovered via file merge | $0.18 |
| Jul 12 | Margin calculator + benchmark section | Agent prompt | Shipped to index.html | $0.12 |
| Jul 12 | Migrate landing page into Astro src/ | Agent prompt | Local success; Git still served Astro starter | $0.22 |
| Jul 12-14 | Cloudflare Git auto-build (npm run build) | Deploy | 4+ failures; production stayed on old upload | $0.44 wasted |
| Jul 14 | Emergency manual wrangler pages deploy | Deploy recovery | Success (37e083de) | $0.08 |
| Jul 17 | Hero tag, FAQ, em-dash cleanup | Agent prompt | Content pushed; Git build failed again | $0.15 |
| Jul 17 | GitHub Actions deploy workflow | Deploy | 3 failures (API token / pages-action auth) | $0.33 wasted |
| Jul 17 | Remove Astro; rebuild static HTML | Agent prompt + reboot | Manual deploy success (6b3fb981) | $0.28 |
| Jul 17 | Move site into dist/ for locked CF output path | Agent prompt + reboot | Git deploy success (2ba55dfc, cf901c7) | $0.19 |
| Jul 19 | Building-in-public log + prompt-to-product copy | Agent prompt | Deployed (fc45cb3) | $0.14 |
| Jul 19 | Hero CTA anchored to margin-read form | Agent prompt | Deployed (3d552cc) | $0.06 |
| Jul 19 | Headroom install, proxy, MCP in Cursor | Tooling | Proxy on; MCP on; 0 API requests through proxy yet | $0.09 |
| Jul 19 | README + architecture docs; build-metrics sync script; public Headroom stats | Docs + deploy | Full step-by-step in README; measured stats on build log page | $0.11 |
| Jul 19 | Move build log to dedicated /build-log.html page | Agent prompt + deploy | Transparency kept; landing page stays product-focused | $0.07 |
Failed deployment IDs on record include a88aabbe, fc3b1c61, 245aef10, 2bc8763d, and others. Each failure kept the previous production build live, which is why the live site lagged edits until manual or dist/ fixes landed.
How much did Daniel's Corner cost from first prompt to launch?
Second project trace on ConvoMargin: daniels-corner.pages.dev from the first hub scaffold prompt through knowledge matrix, blog series, and ConvoMargin integration. Each row maps to a prompt-and-answer blog post on Daniel's Corner.
TLDR: 9 agent sessions, roughly $1.90 modeled LLM spend, $0.00 revenue, margin $-1.90.
| When | Event | Type | Outcome | Est. cost |
|---|---|---|---|---|
| Jul 23 | Daniel's Corner hub scaffold (first prompt) | Agent prompt | Shipped daniels-corner.pages.dev with projects, blog, thinking stream | $0.45 |
| Jul 23 | Connect Daniel's Corner to ConvoMargin trace | Agent prompt | Documented integration path + convomargin JSON schema | $0.12 |
| Jul 23 | Headroom wrap cursor for daniels_corner | Tooling | Proxy URLs printed; rtk hook registered; awaiting Cursor BYOK config | $0.08 |
| Jul 23 | Knowledge Hub Matrix page + series intro | Agent prompt | Shipped /knowledge/ and blog series part 1 | $0.22 |
| Jul 23 | Blog series part 2: B2B buyer-led sales | Agent prompt | Published static blog post from matrix category 1 | $0.18 |
| Jul 23 | Blog series part 3: AI commerce automation | Agent prompt | Published static blog post from matrix category 2 | $0.16 |
| Jul 23 | Blog series part 4: venture ecosystems financing | Agent prompt | Published static blog post from matrix category 3 | $0.17 |
| Jul 23 | Blog series part 5: SEO rapid growth | Agent prompt | Published static blog post from matrix category 4 | $0.17 |
| Jul 23 | ConvoMargin tracking + knowledge blog series batch | Agent prompt | 9 prompt logs tracked; 7 new blog pages; ConvoMargin daniels-corner trace synced | $0.35 |
Source: convomargin-trace.json on Daniel's Corner, synced from blog-posts.json via scripts/sync-convomargin.ps1.