Accept‑First Handoff: A One‑Page Acceptance‑Test Schema That Guarantees Contractors Ship Playable, Billable Features

Accept‑First Handoff is a single, copy‑pasteable page that forces the project to be priced against verifiable outputs rather than vague deliverables. It replaces “build a settings screen” with five concrete artifacts: acceptance tests (human steps), an OpenAPI stub for backend behavior, Figma slices and export settings for visuals, Playwright smoke checks for runtime proof, and a billing unit map that ties each accepted test to the invoice line item.

Vague briefs create negotiation after work begins. That’s where fixed‑price projects fail: hidden edge cases, missing states, or ambiguous copy appear and become “more work.” Define the acceptance first and you force bidders to surface assumptions up front, price them, or exclude them explicitly. Founders get predictable scope and contractors get fewer surprise change orders.

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Defines the single source of truth for acceptance before estimates are written

Below is the practical schema you paste at the top of any brief. Keep it short (one page) and machine‑friendly so bidders can generate test plans, skeleton code, and cost estimates without extra discovery.

Schema (fields to include): - Title & Scope Summary — one sentence stating primary user outcome. - Acceptance Tests (human steps) — numbered, single‑sentence steps with expected pass/fail observable outcome. - OpenAPI Stub — minimal endpoints, request/response examples, required fields, and error codes (attach YAML or paste curl examples). Tools like OpenAPI Generator or mock servers can use this to create server stubs for testing. - Figma Slices — frame names, export formats, resolutions, and a link to the exact frame marked “Ready for development.” Specify any responsive breakpoints and which states are final. - Playwright Smoke Checks — 3–6 automated checks referencing the acceptance tests (e.g., “login -> visit /dashboard -> create widget -> assert toast ‘Created’ and API call POST /widgets 201”). - Billing Unit Map — each acceptance test mapped to a single invoice line (e.g., “AC1: Create widget flow — $X — deliverables: UI, API, tests, telemetry”).

Split the page into clearly labeled blocks so bidders can attach artifacts (OpenAPI YAML, Figma frame link, Playwright snippets) instead of interpreting text. When bidders can run a stub server and a set of Playwright checks locally, their estimate accounts for real integration risk.

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When you receive bids against an Accept‑First brief, validate each contractor response against this checklist before awarding the job. If any item is missing, they haven’t priced integration risk correctly.

Checklist for founders to verify contractor responses:

- Acceptance Test Matrix: A table listing each acceptance test, mapped status (Included / Excluded / Clarified), test owner (contractor/owner), and estimated hours. - Runnable OpenAPI Stub: A small repo or artifact that starts a mock server (or Pact/Pact‑style contract) implementing the documented endpoints and example responses. - Figma Assets: Exact frame links with exports preconfigured (SVG/PNG sizes), and a short note listing unresolved visual edge cases. - Playwright (or equivalent) smoke tests: A minimal suite that runs the acceptance tests end‑to‑end against the stub server and the built frontend. - Billing Unit Map: A line‑item invoice draft mapping each acceptance test to a price and change‑order rules.

Reject bids that omit runnable artifacts. A price that comes without a runnable OpenAPI stub and at least skeleton Playwright checks will systematically underprice integration effort and later ask for change orders when tests fail in real environments. Contractors who supply runnable stubs and tests demonstrate they understand the delivery risk and have priced it correctly — or are offering a fixed price with explicit exclusions you can accept or re‑negotiate. Founders who insist on this checklist consistently get fewer disputes and faster acceptance cycles, because acceptance is defined and verifiable up front, not implied at the end of development worktime when budgets are exhausted and tension is high. Note: for small features it’s acceptable to substitute a Postman collection for Playwright; the important part is machine‑runnable validation tied to the acceptance steps. bullets:[]

Below are predictable ways acceptance‑first bids still fail — and how to spot them in returned proposals. Use these as quick red flags during procurement.

1) Theoretical acceptance tests: A bidder returns acceptance tests written as marketing copy or ambiguous outcomes (“settings updated successfully”). Red flag: missing exact assertions (what text, which element, which HTTP response code). Fix: require selectors and expected HTTP status/body snippets. 2) Visual ambiguity: Figma links point to a prototype rather than the final frames, or the file lacks export presets and “Ready for development” flags. Red flag: bidder estimates large buffer hours for design fixes. Fix: demand export presets and a signed‑off Figma frame list. 3) No runnable API: The contractor provides an OpenAPI doc but no runnable mock or generated stub. Red flag: inability to run Playwright checks locally. Fix: require a one‑command mock server (Prism, MockServer, or Pact stub) in the repo. 4) Siloed testing: Playwright checks only assert UI text and never validate the API request/response shape. Red flag: missing backend assertions and no contract testing. Fix: insist that Playwright tests verify the API response status and JSON shape for at least the critical acceptance tests.

For each failure mode the remedy is the same: require a runnable artifact and an explicit mapping from acceptance tests to code/tests/invoice lines. When bidders can run your acceptance tests before signing, you reduce the chance of later disputes and time‑consuming rework.

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