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UK Car Modification Database

Think "Wikipedia meets PCPartPicker" for cars. Users select: Make Model Year Then browse real modifications. Example For a Stelvio Quadrifoglio: Engine: ECU tune Downpipes Intake Suspension: Lowering springs Coilovers B…

by Kev 2026-06-20 11:04 UTC Anthropic: Claude Fable 5 2 watchers
Data Building
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Build decisions

The scoping decisions the owner and backers settled for this build.

5 settled decisions
Who creates and maintains the core modification data (parts, costs, power gains, impacts) — the fundamental content model that shapes everything else? → 1
What is the core product shape for the MVP — how do users actually interact with the mod data once they've picked a Make/Model/Year? → 4
Launch coverage breadth: since vehicle pages are only valuable once they have community-submitted results and wiki-maintained mod data, how wide do we open the vehicle catalog at launch? → 1
The product is community-results-first, so the credibility and structure of user-submitted results (dyno, 0-60, 1/4 mile, MPG) is the core of the product. How should result submissions be structured and trusted? → 2
Results are "tied to a mod combo" — but what is the unit users actually create and that pages aggregate around? This defines the core data model and contribution flow: do users maintain a persistent build, or just drop individual results? → 1

Prompt / brief

What the AI is being asked to build.

The prompt

Think "Wikipedia meets PCPartPicker" for cars. Users select: Make Model Year Then browse real modifications. Example For a Stelvio Quadrifoglio: Engine: ECU tune Downpipes Intake Suspension: Lowering springs Coilovers Brakes: Pad options Disc options For each mod: Cost Difficulty Reliability impact Insurance impact Estimated power gain Community Features Users upload: Dyno sheets 0-60 times Quarter mile times MPG before/after Revenue Affiliate links: Demon Tweeks AutoDoc Euro Car Parts Tegiwa Why it could work There is no central structured database of modifications across all vehicles.

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Outputs / artifacts

Build artifacts, demo links, and gallery images produced by the AI, when available.

Outputs will appear here when the AI produces build artifacts.

Public ledger

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Credits spent 2026-07-04 12:46 UTC
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gsd build (VM) 10490in/19out on anthropic/claude-fable-5

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gsd build (VM) 10490in/19out on anthropic/claude-fable-5

Credits spent11 credits
Credits spent 2026-07-04 12:14 UTC
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gsd build (VM) 10in/16out on anthropic/claude-fable-5

Credits spent1 credits
Credits spent 2026-07-04 11:46 UTC
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gsd build (VM) 10490in/19out on anthropic/claude-fable-5

Credits spent11 credits
Credits spent 2026-07-04 11:46 UTC
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gsd build (VM) 10in/16out on anthropic/claude-fable-5

Credits spent1 credits
Credits spent 2026-07-04 11:42 UTC
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Credits spent12 credits
Credits spent 2026-07-04 11:42 UTC
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gsd build (VM) 11220in/357out on anthropic/claude-fable-5

Credits spent14 credits
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gsd build (VM) 10490in/22out on anthropic/claude-fable-5

Credits spent11 credits
Credits spent 2026-07-04 11:42 UTC
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gsd build (VM) 10in/16out on anthropic/claude-fable-5

Credits spent1 credits
Credits in 2026-07-04 11:39 UTC
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Funded project with 2000 credits

Credits in2,000 credits
Credits spent 2026-07-04 10:32 UTC
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gsd build (VM) 10in/16out on anthropic/claude-fable-5

Credits spent1 credits
Credits in 2026-07-04 10:29 UTC
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Funded project with 2000 credits

Credits in2,000 credits
Refund 2026-06-16 12:52 UTC
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Refund of unspent pool (88 of 88 credits, pro-rata)

Credits spent88 credits
Credits spent 2026-06-11 20:36 UTC
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Planning: 753 in / 2123 out tokens on claude-fable-5

Credits spent12 credits
Credits in 2026-06-11 20:36 UTC
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Funded project with 100 credits

Credits in100 credits

Activity timeline

Public project events in plain language.

Funded

2026-07-04 11:39 UTC

A backer UK Car Modification Database backed this project.

Building

2026-07-04 10:29 UTC

UK Car Modification Database entered the build phase.

Funded

2026-07-04 10:29 UTC

A backer UK Car Modification Database backed this project.

Created

2026-06-20 11:04 UTC

Kev UK Car Modification Database was created.

Funding

2026-06-11 20:36 UTC

UK Car Modification Database received its first backing.

Funded

2026-06-11 20:36 UTC

A backer UK Car Modification Database backed this project.

Listed

2026-06-11 20:34 UTC

UK Car Modification Database went live for public backing.

Public build log

Live build output and spend messages.

2026-07-04 12:47 UTCScoping complete — every decision is locked in. The build starts automatically once funding reaches 70200 credits (currently 3713).
2026-07-04 12:46 UTCAnswer locked — checking for the next key decision…
2026-07-04 12:46 UTCMetering proxy reachable — build VM online.
2026-07-04 12:46 UTCAll decisions locked — resuming the build with your answers.
2026-07-04 12:44 UTCDecision needed — it's on the project page awaiting your answer.
2026-07-04 12:44 UTCThe build needs 1 decision(s) from you — answer them on the project page (backers can weigh in; unanswered auto-resolve to the top vote after 24h).
2026-07-04 12:44 UTCThe decision has been surfaced to the owner and is awaiting their answer. Once they choose how results and mod combos are modeled (persistent builds vs. one-off submissions vs. hybrid vs. mod-centric), scoping can conclude — that choice pins down the core data model, contribution flow, and what vehicle pages aggregate.
2026-07-04 12:44 UTCError: FP_DECISION_PENDING:D-132fa653 — captured and surfaced to the owner; halting.
2026-07-04 12:44 UTC✗ ask_decision {"question":"Results are \"tied to a mod combo\" — but what is the unit users actually create and that pages aggregate around? This defines the core data model and contribution flow: do users maintain a persistent build, or just drop individual results?","options":["A: Persistent Builds (garage model) — each user registers their car as a 'build' with its current mod list; all dyno/0-60/MPG results are logged against that build over time. Vehicle pages aggregate builds; build pages
2026-07-04 12:44 UTC> build · anthropic/claude-fable-5
2026-07-04 12:43 UTCAnswer locked — checking for the next key decision…
2026-07-04 12:43 UTCMetering proxy reachable — build VM online.
2026-07-04 12:43 UTCAll decisions locked — resuming the build with your answers.
2026-07-04 12:39 UTCDecision needed — it's on the project page awaiting your answer.
2026-07-04 12:39 UTCThe build needs 1 decision(s) from you — answer them on the project page (backers can weigh in; unanswered auto-resolve to the top vote after 24h).
2026-07-04 12:39 UTCThe decision has been surfaced to the project owner. Since the product's entire value hinges on community-submitted performance results (per the community-results-first choice), how those results are structured and trusted — evidence requirements, build profiles, or lightweight entries — is the most consequential unanswered decision. It determines submission friction, data credibility, page design, and moderation load. Awaiting the owner's answer before proceeding.
2026-07-04 12:39 UTCError: FP_DECISION_PENDING:D-21709158 — captured and surfaced to the owner; halting.
2026-07-04 12:39 UTC✗ ask_decision {"question":"The product is community-results-first, so the credibility and structure of user-submitted results (dyno, 0-60, 1/4 mile, MPG) is the core of the product. How should result submissions be structured and trusted?","options":["A: Verified-evidence-only — every result must attach proof (dyno sheet image, GPS/timing-app export, timeslip photo); unverified numbers are rejected. High trust, high friction, fewer submissions.","B: Two-tier — anyone can self-report numbers tie
2026-07-04 12:39 UTC> build · anthropic/claude-fable-5
2026-07-04 12:39 UTCAnswer locked — checking for the next key decision…
2026-07-04 12:38 UTCMetering proxy reachable — build VM online.
2026-07-04 12:38 UTCAll decisions locked — resuming the build with your answers.
2026-07-04 12:36 UTCThe build needs 1 decision(s) from you — answer them on the project page (backers can weigh in; unanswered auto-resolve to the top vote after 24h).
2026-07-04 12:36 UTCDecision surfaced to the owner regarding launch coverage breadth. Awaiting their choice before continuing scoping.
2026-07-04 12:36 UTCError: FP_DECISION_PENDING:D-db988e43 — captured and surfaced to the owner; halting.
2026-07-04 12:36 UTC✗ ask_decision {"question":"Launch coverage breadth: since vehicle pages are only valuable once they have community-submitted results and wiki-maintained mod data, how wide do we open the vehicle catalog at launch?","options":["A: Fully open from day one — every Make/Model/Year selectable (via a licensed vehicle database), accepting that most pages start empty (Wikipedia model: maximum breadth, thin content)","B: Curated seed — launch with ~20-50 popular enthusiast platforms (e.g. Golf GTI, Civi
2026-07-04 12:36 UTC> build · anthropic/claude-fable-5
2026-07-04 12:36 UTCAnswer locked — checking for the next key decision…
2026-07-04 12:36 UTCMetering proxy reachable — build VM online.
2026-07-04 12:35 UTCAll decisions locked — resuming the build with your answers.
2026-07-04 12:34 UTCDecision needed — it's on the project page awaiting your answer.
2026-07-04 12:34 UTCThe build needs 1 decision(s) from you — answer them on the project page (backers can weigh in; unanswered auto-resolve to the top vote after 24h).
2026-07-04 12:34 UTCDecision D-1909feab has been surfaced to the owner: choosing the core product shape (reference catalog vs. build planner vs. shareable builds vs. results-first aggregation). This determines everything downstream — data model, community features, and how affiliate links integrate — so it's the right next decision after locking the community-wiki content model. Awaiting the owner's answer before scoping further.
2026-07-04 12:34 UTCError: FP_DECISION_PENDING:D-1909feab — captured and surfaced to the owner; halting.
2026-07-04 12:34 UTC✗ ask_decision {"question":"What is the core product shape for the MVP — how do users actually interact with the mod data once they've picked a Make/Model/Year?","options":["A: Reference catalog only — browse/search structured mod pages per vehicle (costs, gains, impacts); no build assembly. Simplest, pure 'wiki' play.","B: Build planner (PCPartPicker core) — users assemble a saved 'build list' of mods with running totals for cost, estimated power gain, and flagged reliability/insurance impacts.
2026-07-04 12:34 UTC> build · anthropic/claude-fable-5
2026-07-04 12:33 UTCAnswer locked — checking for the next key decision…
2026-07-04 12:33 UTCMetering proxy reachable — build VM online.
2026-07-04 12:31 UTCBuild VM provisioning (Vultr a95ad075). Toolchain + planning starting.
2026-07-04 12:23 UTCScoping complete — every decision is locked in. The build starts automatically once funding reaches 70200 credits (currently 3883).
2026-07-04 12:23 UTC {
2026-07-04 12:23 UTC "options": [
2026-07-04 12:23 UTC "question": "Given the community-wiki content model, what should the launch scope of vehicle coverage be — the breadth strategy that determines whether the site feels authoritative or empty on day one?",
2026-07-04 12:23 UTCask_decision({
2026-07-04 12:23 UTC```json
2026-07-04 12:23 UTCI don't have an `ask_decision` tool available in this environment — my toolset is limited to file/code/terminal operations. So I can't make that tool call literally, but here is the exact decision I would submit, in the requested structure:
2026-07-04 12:23 UTC> build · anthropic/claude-fable-5
2026-07-04 12:23 UTCAnswer locked — checking for the next key decision…
2026-07-04 12:22 UTCMetering proxy reachable — build VM online.
2026-07-04 12:20 UTCBuild VM provisioning (Vultr 18da7430). Toolchain + planning starting.
2026-07-04 12:15 UTCScoping complete — every decision is locked in. The build starts automatically once funding reaches 70200 credits (currently 3907).
2026-07-04 12:14 UTCAnswer locked — checking for the next key decision…
2026-07-04 12:14 UTCMetering proxy reachable — build VM online.
2026-07-04 12:12 UTCBuild VM provisioning (Vultr 9e3cbc2a). Toolchain + planning starting.
2026-07-04 11:46 UTCScoping complete — every decision is locked in. The build starts automatically once funding reaches 70200 credits (currently 3949).
2026-07-04 11:46 UTCAnswer locked — checking for the next key decision…
2026-07-04 11:46 UTCMetering proxy reachable — build VM online.
2026-07-04 11:45 UTCAll decisions locked — resuming the build with your answers.
2026-07-04 11:42 UTCDecision needed — it's on the project page awaiting your answer.
2026-07-04 11:42 UTCThe build needs 1 decision(s) from you — answer them on the project page (backers can weigh in; unanswered auto-resolve to the top vote after 24h).
2026-07-04 11:42 UTCScoping the project — gathering the key decisions for you…
2026-07-04 11:42 UTCMetering proxy reachable — build VM online.
2026-07-04 11:39 UTCBuild VM provisioning (Vultr 40480492). Toolchain + planning starting.
2026-07-04 11:39 UTCBacked with 2000 credits by Matt.
2026-07-04 10:33 UTCScoping complete — every decision is locked in. The build starts automatically once funding reaches 70200 credits (currently 1999).
2026-07-04 10:33 UTCScoping surfaced no decisions — proceeding with best-judgement defaults.
2026-07-04 10:32 UTCScoping the project — gathering the key decisions for you…
2026-07-04 10:32 UTCMetering proxy reachable — build VM online.
2026-07-04 10:30 UTCBuild VM provisioning (Vultr 00b6cf3d). Toolchain + planning starting.
2026-07-04 10:29 UTCBacked with 2000 credits by Kev.
2026-06-20 11:31 UTCApproved by review. Project is live.
2026-06-20 11:04 UTCMaker submitted the curated plan for review.
2026-06-16 12:52 UTCReset to draft as a thank-you to early backers; planning re-funded by FablePool.
2026-06-11 20:36 UTCPlan ready: 6 milestones, est. total 70200 credits (2x cushion over token estimates). Next milestone runs when its funding gate is met.
2026-06-11 20:36 UTCPlanning cost 12 credits (753 in / 2123 out tokens)
2026-06-11 20:36 UTCPlanning started (model: claude-fable-5)
2026-06-11 20:36 UTCBacked with 100 credits (one-step funding).
2026-06-11 20:34 UTCApproved by review. Project is live.
2026-06-11 20:33 UTCProject submitted for review. It goes live — and can spend — only after approval.

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