Open-source trading engine and MCP server for prediction markets. Fee-aware no-arbitrage trading across related contracts, live on Kalshi, Polymarket and Solana or on paper.
Talk to agents. Test trading ideas. Try AI trading agents on real market data — no code required.
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🍁 MapleSheet Co. — Official Website (maplesheet.ca)
Multi-page React site: Home · Trackers · Free Tools · Resources · About · Contact
How to deploy (one time)
Go to github.com → your repositories → New → name it maplesheet-website → Create
On the empty repo page, click "uploading an existing file"
Drag ALL files/folders from this zip (NOT the zip itself) → Commit
Go to vercel.com → Add New → Project → Import maplesheet-website → Deploy
Test the temporary vercel.app link Vercel gives you
Vercel → Project → Settings → Domains → add maplesheet.ca → follow the DNS
instructions (paste the shown records into Spaceship → Domain → DNS settings)
src/data.js — products, prices, resources/posts, FAQ, links, promo code.
To publish a new Resource post: add an object to the TOP of the RESOURCES list.
To activate the contact form + newsletter box:
Go to web3forms.com → enter [email protected] → copy your free Access Key
Paste it into web3formsKey in src/data.js
(Until then, both forms show a friendly "email us instead" message.)
Updating the live site
Edit the file on GitHub (pencil icon) → Commit → Vercel redeploys automatically in ~60s.
Phase C: newsletter service (MailerLite) if list grows beyond inbox-manageable
Paste the real RRSP Google Sheet link into src/data.js → delivery.sheetUrl
Stripe Dashboard → RRSP Payment Link → "After the payment" → redirect to
https://www.maplesheet.ca/checkout/return?session_id={CHECKOUT_SESSION_ID}
Set up the email delivery backup (api/stripe-webhook.js) — see below
RRSP Multi-Brokerage Tracker is fully live: Stripe Buy Button, real
sheet link, 3 delivery PDFs, backup email, all tested with a real
purchase + refund.
TFSA Multi-Brokerage Tracker — fully live
src/data.js entry built out (gallery, overview, features, included,
delivery.pdfs) from the real tracker screenshots
3 delivery PDFs built (Template Link, User Guide, TFSA Government
Rules — figures verified against current CRA/third-party sources)
Stripe Product + Payment Link + Buy Button created, pasted into
src/data.js
Payment Link metadata confirmed: sku = MS-TFSA-MB
Payment Link "After the payment" redirect confirmed set to
https://www.maplesheet.ca/checkout/return?session_id={CHECKOUT_SESSION_ID}
Real TFSA Multi-Brokerage Google Sheet link swapped into
delivery.sheetUrl, and pdfbuild/build_tfsa_mb_templatelink.py
rerun so the Template Link PDF matches (⚠️ still double-check Share
settings = "Anyone with the link" → Viewer)
Real test purchase confirmed working end to end (sheet link, PDFs,
Thank You redirect)
Canadian Ultimate Tracker — All 5 Accounts (really 6: TFSA, RRSP,
src/data.js entry fully built out (gallery of 13 real screenshots,
overview, features, included, delivery) from your real P12 Ultimate
Tracker v1.0 screenshots + PDFs
Delivery sheet link wired up — real "make a copy" link from your own
P12_Template_Link.pdf, Share settings not yet independently confirmed
(double-check it's "Anyone with the link" → Viewer)
3 delivery PDFs added — your own real P12_Template_Link.pdf,
P12_Clear_Sample_Data_Guide.pdf, and P12_CRA_Rules_and_Complete_Guide.pdf,
copied in as-is and relabeled to match the site's /downloads naming
(see the comment above this product's delivery block in src/data.js —
these 3 PDFs all have a "maplesheeet.etsy.com" typo in the footer,
worth fixing next time you touch them)
Stripe Buy Button pasted into src/data.js
Payment Link metadata confirmed: sku = MS-FLAGSHIP-ULTIMATE
Payment Link "After the payment" redirect confirmed working (real
test purchase landed on the on-site Thank You page)
MAPLE25 discount confirmed working end to end (checkout total and
actual charged amount both correctly showed $33.74 after 25% off)
Payment Link "After the payment" redirect fixed — was still set to
"Show confirmation page" instead of the custom redirect; corrected
Payment Link metadata fixed — sku was accidentally set to
MS-TFSA-MB (the two Payment Links' metadata had gotten crossed when
both were set up around the same time), corrected to MS-RRSP-MB
TFSA-MB's Payment Link metadata double-checked too, in case of the
mirrored mistake — confirmed correctly set to MS-TFSA-MB
Real test purchase confirmed working end to end (own sheet link this
time, not TFSA's)
TFSA + RRSP + RESP + Margin Tracker — fully live
src/data.js entry fully built out (gallery of 9 real screenshots,
overview, features, included, delivery) from your real P4 screenshots
+ PDFs
Delivery sheet link wired up — real "make a copy" link from your own
P4 Template Link, Share settings not yet independently confirmed
(double-check it's "Anyone with the link" → Viewer)
6 delivery PDFs added — Template Link (rebuilt with your current
logo/brand colors, old one had a leftover navy/green logo), Clear
Sample Data Guide, and 4 separate account guides (TFSA, RRSP, RESP,
Margin — this product ships one guide per account instead of a single
combined CRA doc). The 5 guide PDFs are your own real P4_*.pdf files,
copied in as-is (same "maplesheeet.etsy.com" footer typo as Ultimate's
PDFs, not fixed — worth a batch fix across all of them sometime)
Stripe Buy Button pasted into src/data.js
Real test purchase confirmed — Template Link + sheet delivery working,
MAPLE25 discount applying correctly
Still to confirm: Thank You redirect page, the other 5 PDFs in the
bundle (not just Template Link), and that the Payment Link's sku
metadata is set to MS-COMBO-TFSA-RRSP-RESP-MARGIN (not crossed with
another product — see the RRSP/TFSA mix-up above for why this matters)
4 of 14 products now migrated to MapleSheet's own direct Stripe checkout
(RRSP-MB, TFSA-MB, Ultimate, TFSA+RRSP+RESP+Margin). 10 products still sell
through Etsy/Payhip only. All 4 migrated so far are metadata-correct,
redirect-correct, delivery-correct, with MAPLE25 verified on the first 3 and
partially verified on the 4th. ⚠️ Remember to refund any remaining test
charges in Stripe Dashboard → Payments.
MAPLE25 launch discount — missing on Stripe checkout
The site shows "🏷 25% off everything with code MAPLE25" (CONFIG.promoText
in src/data.js) on the homepage, the Trackers catalog, and every tracker
detail page — including the 3 products that now check out through Stripe
(RRSP-MB, TFSA-MB, Ultimate). But CONFIG.promoCode is just display text;
nothing in the code wires it into Stripe. A Stripe Buy Button only shows a
promo-code field at checkout if that's turned on for the Payment Link and
a matching coupon/promotion code exists in Stripe — right now, almost
certainly neither is set up, so buyers on those 3 products see the code
advertised but have nowhere to enter it.
Stripe Dashboard → Product catalog → Coupons → Create coupon → 25%
off → "Redeem by" = January 16, 2027 (the real end date for this
launch discount)
On that coupon → Create promotion code → code = MAPLE25 (must match
exactly, case-sensitive)
On each of the 3 Payment Links (RRSP-MB, TFSA-MB, Ultimate) → Edit
link → turn on "Allow promotion codes" → Update link
(one coupon + one promotion code covers all 3 Payment Links — no need
to recreate it per product)
Separately confirm Etsy and Payhip each have their own MAPLE25 coupon
configured — those are both independent of Stripe and of each other
Email delivery backup (api/stripe-webhook.js)
The on-site /checkout/return page is the main way buyers get their download
links. This webhook is a second, automatic path: the moment Stripe confirms a
payment, it emails the buyer the same links directly — so they're still
covered even if they close the tab before the on-site page loads.
One-time setup, in order:
Stripe → Developers → Webhooks → Add endpoint
URL: https://www.maplesheet.ca/api/stripe-webhook
Events to send: checkout.session.completed
Copy the "Signing secret" it shows you (starts with whsec_)
Resend (resend.com) → sign up (free, 3,000 emails/month) → Dashboard →
API Keys → Create API Key → copy it
STRIPE_WEBHOOK_SECRET = the whsec_... value from step 1
RESEND_API_KEY = the re_... value from step 2
Redeploy (or it picks these up on the next deploy automatically)
Test it: Stripe Dashboard → your webhook endpoint → "Send test webhook"
→ checkout.session.completed, then check Vercel → Deployments →
Functions → stripe-webhook logs for errors. For a real end-to-end check,
switch Stripe to test mode and pay with card 4242 4242 4242 4242 through
the live Buy Button, then confirm the email actually lands in your inbox.
Once Resend's domain verification is done (Resend → Domains, a few DNS
records), change FROM_EMAIL in api/stripe-webhook.js from the shared
[email protected] test address to something on your own domain.
