Quotes & Invoices — 1 of 20 skills in the Architect & BTP pack
In a chat, Word or Excel files aren't always generated: you get the document as structured text instead.
Devis-Architecte
A compliant fee proposal, in three billing modes.
Free, no account, no email — the command is all you need.
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“Use the architect-fee-proposal skill to draft a compliant fee proposal for this mission: …”
1 · The simplest way
Copy and paste into any AI chat
This button copies the whole skill. Paste it into Claude, ChatGPT, or Gemini, then describe what you need. No installation required.
In a chat, Word or Excel files can't always be generated: you'll receive the document as structured text instead, and Claude will flag it.
- This skill produces mandatory legal notices: review them before any professional use.
2 · Command line
/devis-architecte installs in 3 steps
For Claude Code. The skill installs on your computer and stays available across all your projects.
Prerequisites: Claude Code + Node.js
The skill runs inside Claude Code, Anthropic's AI assistant installed on your computer. Node.js is the engine that runs the install command. Both are free.
Open PowerShell
Click Start, type "PowerShell", then press Enter.
Paste the command
Right-click inside the PowerShell window (or press Ctrl + V) to paste the command below, then press Enter. Wait a few seconds.
npx educasium --skill devis-architecte --globalWhat you should see:
npx educasium --skill devis-architecte --global
Fetching https://raw.githubusercontent.com/Chappygo-OS/claude-meta-skills/main/dist/devis-architecte.zip
…
Installed "devis-architecte". Restart Claude Code to pick it up.
Restart Claude Code
In Claude Code, type /restart (or quit and relaunch Claude Code). The skill now appears in the command list.
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The assisted install works through a .zip file imported into Claude.ai. It takes longer and asks for your email.
What the skill does
View the source codeIn detail.
Describe the mission and billing mode (lump sum, by mission phase ESQ→AOR, or time-and-materials). Claude generates a .docx fee proposal with every mandatory legal mention (Code de commerce, CGI), automatic numbering, VAT calculation, and a signature block.
When to use it
Before starting a mission — to propose your fees properly.
Example usage
/devis-architecte Full MOE mission, works estimated at €150,000, 10% fee by phase...In depth
How this skill really works
Devis-Architecte produces a French architect's pre-contractual fee proposal — the document handed to a client before a mission starts, which becomes binding once the client signs "Bon pour accord" (approved). It covers three billing modes, combinable within one document: lump sum, breakdown by the 9 standard mission phases (ESQ, APS, APD, PRO, DCE, ACT, VISA, DET, AOR), and time-and-materials billing.
Because the devis is a pre-contractual document with legal standing — legal basis Code de commerce art. L441-9 and following, and art. 289 of the CGI for invoicing —, the skill automatically applies the mandatory mentions (issuer identity with SIRET and intra-community VAT number, registration number with the Ordre des architectes, decennial insurance, validity period, signature block), chronological D-AAAA-NNN numbering, and the 20% VAT calculation specific to intellectual services.
It's built for the architect pricing a mission before it starts, and serves as the reference for later billing documents (deposit, progress, final invoices) which reuse its number and phase breakdown.
When to use it
- Before starting a project-management mission, to formalize a fee proposal.
- When the fee is a single lump sum for the whole mission.
- When fees need to be split across the 9 standard mission phases (ESQ, APS, APD, PRO, DCE, ACT, VISA, DET, AOR).
- When billing is time-and-materials, with an hourly rate per person and an estimated number of hours.
- When several billing modes need to combine in one document.
- When optional missions (project coordination/OPC, land survey, RE2020 thermal study) need pricing separate from the base fee.
When not to use it
- Not for invoicing a mission that has already been signed — that's the role of /facture-acompte, /facture-situation, or /facture-solde depending on the point in the mission.
- Not for issuing an actual invoice — invoice-specific mentions (due date, late-payment penalty rate, the flat €40 collection-cost indemnity) don't belong on a devis, which carries its own mentions (validity period, "Bon pour accord" sign-off).
The method
The 3-combinable-modes model
references/structure-devis.md documents 3 fee-table structures, usable alone or together within one devis, plus a layer of mandatory legal mentions that applies regardless of the mode chosen.
- Lump sum
- A single pre-tax amount covering the whole project-management mission, with no phase breakdown.
- By mission phase
- Breakdown into 9 standard phases (ESQ, APS, APD, PRO, DCE, ACT, VISA, DET, AOR), each with a fee percentage and amount. If fees are calculated as a % of construction costs, they're adjusted to the final construction cost at handover.
- Time-and-materials
- Pre-tax hourly rate per person (architect, draftsperson) multiplied by an hour estimate. The amount shown is a non-contractual estimate; actual billing runs on proof of time worked.
- Legal-mentions layer
- Applies to every mode: D-YYYY-NNN numbering, 20% VAT, validity period (3 months by default), and the client signature block "Bon pour accord".
Steps
Collect the issuer's information
Once per conversation: name/business name, address, SIRET, intra-community VAT number, registration number with the Ordre des architectes, decennial insurance (company and policy number). Reuse if already given.
Collect the mission-specific information
Read the full field list documented in references/structure-devis.md: client info, devis purpose, billing mode, itemized services, estimated construction cost (if fees are a %), validity period, payment terms, optional missions.
Build the fee table
Apply the table structure of the chosen mode(s) (lump sum, by mission phase, time-and-materials) — modes can combine within a single document.
Apply numbering and legal mentions
Number D-YYYY-NNN, chronological (ask for the next number if it can't be inferred from context). Calculate VAT = pre-tax × 0.20 and total = pre-tax × 1.20, rounded to the cent. Include every mandatory mention documented in references/mentions-legales.md.
Generate the file
Default .docx output, named Devis-[D-YYYY-NNN]-[ClientName].docx.
Report
Confirm the pre-tax/VAT/total amounts, the validity period, and remind the user this becomes binding only once the client signs "Bon pour accord".
Rules
- 20% VAT for intellectual services: VAT = pre-tax amount × 0.20, total = pre-tax × 1.20, rounded to the euro cent.
- Chronological D-YYYY-NNN numbering; if the next number can't be inferred from the conversation's context, ask the user.
- Default 3-month validity period if the user doesn't specify one.
- Always include the client signature block with the "Bon pour accord" mention.
- Include every mandatory mention common to devis and invoices: issue date, number, issuer identity (SIRET, intra-community VAT), client identity, itemized service description, quantity and pre-tax unit price, VAT rate, pre-tax/VAT/total amounts.
- Name the file following the Devis-[D-YYYY-NNN]-[ClientName].docx format.
Mistakes to avoid
- Using this skill to invoice a mission that has already been signed — a mix-up with the facture-acompte / facture-situation / facture-solde family.
- Omitting a mandatory legal mention (SIRET, intra-community VAT, Ordre registration number, decennial insurance) for not having asked the issuer upfront.
- Presenting a devis as definitively binding before the client's "Bon pour accord" signature.
- Mixing invoice-only mentions (late penalties, the flat €40 collection indemnity, payment due date) into a devis, which doesn't carry them.
- Improvising a validity period or a devis number without flagging to the user that the information was missing.
What this skill doesn't do
- Does not invoice a mission already underway or finished — that's the role of /facture-acompte, /facture-situation, /facture-solde once the devis is signed.
- Does not automatically calculate the estimated construction cost — that figure must be supplied by the user to base percentage fees on.
- Does not verify the actual validity of the decennial insurance or real registration with the Ordre des architectes — it takes the issuer's supplied information as given.
- Does not track payment collection or send payment reminders.
- Does not draft custom general terms beyond the standard canvas (scope, intellectual property, insurance, competent court) — mission-specific clauses remain the user's responsibility.
Skill contents — 3 fichiers · 11.1 KB(SKILL.md, references/mentions-legales.md, references/structure-devis.md)
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