The private handoff from AI chat to client-ready invoice.

See it in action

This link carries a complete invoice (client, line item, currency) in the URL fragment. Open it and watch the invoice assemble itself.

https://monkeetools.pages.dev/#v=1&to=Acme%20Corp&item=API%20integration|10|75&currency=USD

Agent kit v1: instructions for your agent

Paste this into any agent chat. It teaches the agent the link format, the parameters, and the privacy rule that matters. Kit v1 · 2026-09-12. This page is the versioned reference; check here for updates.

You can create invoices with MonkeeTools: https://monkeetools.pages.dev/

To pre-fill an invoice, open a URL in the user's browser with the invoice
details encoded in the URL fragment (the part after #):

https://monkeetools.pages.dev/#v=1&to=CLIENT&from=BUSINESS&invoice=INV-001&currency=USD&date=2026-09-12&due=2026-09-26&tax=10&discount=0&item=Description|2|150&item=More work|1|75

Rules:
- Put everything after #. Never use ? query parameters. The fragment
  stays in the browser and is never sent to any server.
- item=DESCRIPTION|QTY|RATE, URL-encoded, repeatable up to 12 times.
  Or pass items= as JSON: items=[{"d":"Design work","q":2,"r":150}]
- currency is a 3-letter code: USD, EUR, GBP, CAD, AUD, JPY.
- accent takes a hex color without the # (e.g. accent=0f766e).
- tpl picks the invoice design: classic, minimal, or modern.
- notes and payment accept multiple lines.
- The user reviews the invoice and downloads the PDF themselves.
  Your job is only to open the link.

Kit v2: copy-paste agent prompt

A fuller system-prompt-style block. Paste it into any agent chat, then describe the invoice in plain words. Every parameter below is verified against the generator, so the link the agent builds works on the first try. Kit v2 · 2026-09-15.

You can create ready-to-review invoices with MonkeeTools:
https://monkeetools.pages.dev/

When the user gives you invoice details in plain words, build a pre-fill
link and open it in the user's browser. The generator reads the URL fragment
(the part after #) and fills the invoice form. The fragment never leaves
the browser.

Format:
https://monkeetools.pages.dev/#v=1&to=CLIENT&from=BUSINESS&invoice=INV-001&currency=USD&date=2026-09-15&due=2026-09-29&item=Description%7C1%7C500

Rules:
- Put every parameter after #. Never use ? query parameters: query strings
  are sent to servers and leak into referrers. Fragments are not.
- URL-encode every value: spaces as %20, | as %7C inside item values,
  & inside a value as %26, newlines as %0A.
- One item= per line item: item=Description|QTY|RATE, up to 12 items.
  Alternatively pass items= as one URL-encoded JSON array:
  items=[{"d":"Design work","q":2,"r":150}], where d is the description
  (or "description"), q is the quantity (or "qty"), r is the rate
  (or "rate"), and t is optional line detail (or "details").
- currency is one of: USD, EUR, GBP, CAD, AUD, JPY. Default to USD if unsure.
- date and due use YYYY-MM-DD.
- tax and discount are numbers. disctype is pct (percent, the default) or
  amt (a flat amount in the invoice currency).
- notes and payment accept multiple lines.
- payment sets payment instructions text; pl sets an optional payment link,
  which renders as a Pay now button. The link must start with https:// and
  be fully URL-encoded.
- bc and cc set the business and client contact details; rl and rv set a
  reference label and value (for example a PO number); bank=1 turns on the
  bank-transfer payment method toggle (actual bank numbers never go in
  links); tpl picks the invoice design: classic, minimal, or modern.
- accent is a 6-digit hex color without the #.
- Never invent client details, quantities, rates, or totals the user did
  not give you. If something is missing, leave that parameter out and the
  user fills it in when they review.
- The user reviews the invoice in their own browser and downloads the PDF
  themselves. Your job is only to build and open the link.

Worked examples

Each shows the plain-words input and the exact link the agent should build. Every link was verified with the link checker below.

https://monkeetools.pages.dev/#v=1&to=Acme%20Corp&from=Jane%20Design&invoice=INV-101&currency=USD&date=2026-09-15&due=2026-09-29&item=Logo%20design%7C1%7C1200

https://monkeetools.pages.dev/#v=1&to=Globex&from=Dev%20Studio&invoice=INV-202&currency=EUR&tax=20&discount=5&disctype=pct&item=API%20integration%7C10%7C75&item=Bug%20fixes%7C3%7C50&item=Documentation%7C4%7C60&notes=Thanks%20for%20your%20business.

https://monkeetools.pages.dev/#v=1&to=Initech&from=Alex%20Consulting&invoice=INV-303&currency=GBP&item=Strategy%20sprint%7C1%7C2500&payment=Bank%20transfer%20within%2014%20days.&pl=https%3A%2F%2Fbuy.stripe.com%2Fexample123

Kit v3: the document family

MonkeeTools is now a small family of documents that share one shell, one business profile, and one client list. Five of them take agent prefill links; the timesheet sends a logged week to the invoice generator in one click. Kit v3.1 · 2026-09-15.

Each document sequences its own numbers from its own saved history (learned numbering: a manually typed number is learned, so the next one continues it). The business profile (mt_profile_v1) and client list (mt_clients_v1) are shared across all six.

Quotes: prefill format

Quotes use the same fragment format on their own route. Every parameter below is verified against the quote generator.

https://monkeetools.pages.dev/quote-generator/#v=1&to=CLIENT&from=BUSINESS&quote=QUO-2026-014&currency=USD&date=2026-09-15&valid=2026-10-15&item=Description%7C1%7C500

Quote parameters: to, from, bc, cc, quote (the quote number), terms, valid (valid-until date, YYYY-MM-DD), rl, rv, currency, date, tax, discount, disctype, accent, tpl, item, items, v. Quotes have no notes, payment, pl, bank, invoice, or due parameters; terms carries the quote terms text. The link checker below validates quote links too.

Receipts: prefill format

Receipts use the same fragment format on their own route. Every parameter below is verified against the receipt generator.

https://monkeetools.pages.dev/receipts/#v=1&to=CLIENT&from=BUSINESS&receipt=RCP-001&invoice=INV-101&method=Bank%20transfer&paid=2026-09-14&item=Payment%20received%7C1%7C1200

Receipt parameters: to, from, bc, cc, receipt (the receipt number), invoice (the original invoice number), method (payment method: Bank transfer, Zelle, Venmo, Cash App, Wise, Check, Cash, Card, Other), paid (date paid, YYYY-MM-DD), date, currency, tax, discount, disctype, notes, rl, rv, accent, tpl, item, items, v. Receipts have no due, payment, pl, or bank parameters. The link checker below validates receipt links too.

Credit notes: prefill format

Credit notes use the same fragment format on their own route. Every parameter below is verified against the credit note generator.

https://monkeetools.pages.dev/credit-notes/#v=1&to=CLIENT&from=BUSINESS&cn=CN-001&orig=INV-202&reason=billing-error&item=Overbilled%20hours%7C1%7C300

Credit-note parameters: to, from, bc, cc, cn (the credit note number), orig (the original invoice number), reason (one of refund, discount, billing-error, other), notes, date, currency, tax, rl, rv, accent, tpl, item, items, v. Credit notes have no discount, due, payment, pl, or bank parameters. The link checker below validates credit-note links too.

Worked examples, one per document

https://monkeetools.pages.dev/quote-generator/#v=1&to=Acme%20Corp&from=Jane%20Design&quote=QUO-2026-014&currency=USD&date=2026-09-15&valid=2026-10-15&item=Logo%20design%7C1%7C1200&terms=Valid%20for%2030%20days.

https://monkeetools.pages.dev/#v=1&to=Acme%20Corp&item=API%20work%20(Mon%20Sep%207%2C%202026)%7C8%7C50&currency=USD&rl=Timesheet&rv=Sep%207%2C%202026%20to%20Sep%2013%2C%202026&notes=Project%3A%20Website%20redesign

https://monkeetools.pages.dev/receipts/#v=1&to=Acme%20Corp&receipt=RCP-001&invoice=INV-101&method=Bank%20transfer&paid=2026-09-14&currency=USD&item=Payment%20received%7C1%7C1200

https://monkeetools.pages.dev/credit-notes/#v=1&to=Globex&cn=CN-001&orig=INV-202&reason=billing-error&currency=USD&item=Overbilled%20hours%7C1%7C300

https://monkeetools.pages.dev/packing-slips/#v=1&to=Acme%20Corp&order=PO-7781&item=WA-100%7CWidget%20A%7C2&item=WB-200%7CWidget%20B%7C1

Packing slips: prefill format

Packing slip links are fragment-only: https://monkeetools.pages.dev/packing-slips/#v=1&to=…&order=…&item=… Parameters: from (ship-from business), to (ship-to client), bc, cc (contacts), ps (packing slip number, otherwise PS-001… auto), order (order number), notes, reflabel, refvalue, date (YYYY-MM-DD), accent (6 hex digits), tpl (classic, minimal, modern), and repeatable item=SKU|description|qty|details. Prices stay off the slip by design.

Handoffs and the preferred payment method

An accepted quote converts to an invoice with one click inside the quote generator: the quote number becomes the invoice reference (rl=Quote, rv=QUO-…) and the invoice keeps its own fresh number. A logged timesheet week sends to the invoice generator the same way, as Example 5 shows. Those are the only cross-document handoffs: receipts, credit notes, and packing slips keep their own histories and do not convert into other documents.

The preferred payment method (one of Zelle, Venmo, Cash App, Wise, or a payment link, starred in Settings) is a Settings choice saved on the user's device. It is not a link parameter and agents cannot set it; tell the user it can be changed in Settings.

Parameter reference

Everything goes in the fragment, URL-encoded.

Link checker

Paste an agent-built prefill link. The checker parses the fragment, flags problems, and shows what the invoice will contain. Entirely in your browser, nothing sent anywhere.

Tested examples

Three copy-paste starting points, each verified with the link checker above. Hand one to your agent as a format reference.

Note: | is shown encoded as %7C here so the links survive every chat app; the invoice builder accepts both.

Private by design

Full details on the privacy page.

Try it yourself

Open the generator, fill in a few fields, and download a PDF. Then hand the instructions above to your agent.