Unwrapped

Teardown · bolt

BOLT

BOLT

CategoryCode GenerationLast round · $105M · 2025Site ↗
  • GV (Google Ventures)
UX wrapper

WebContainer runtime + frontier code model + preview IDE.

01

Public data / API layer

Internal replication score

Easy
0.90

Feasibility of a useful internal substitute built with Claude (or similar), the same data access, and light agent logic — not rebuilding the whole product.

IRS = 0.30·D + 0.25·L + 0.20·O + 0.15·R + 0.10·Sthis record · 90%
  • D

    Data accessibility

    weight 0.301.00
    • 1.0mostly customer-owned / public / standard third-party sources
    • 0.5mixed accessibility
    • 0.0hard-to-access or proprietary source layer
  • L

    LLM substitutability

    weight 0.250.95
    • 1.0mostly retrieve / prompt / cite / summarize / classify / compare
    • 0.5mixed standard + custom behavior
    • 0.0strongly custom model behavior (fine-tunes on proprietary data, etc.)
  • O

    Output simplicity

    weight 0.200.85
    • 1.0straightforward internal work product (memo, list, reply, SQL query)
    • 0.5moderately specialized
    • 0.0highly specialized (e.g. FDA-graded clinical text)
  • R

    Review / risk tolerance

    weight 0.150.90
    • 1.0internal use with human review is acceptable
    • 0.5moderate risk
    • 0.0very low tolerance for error (e.g. external legal filings)
  • S

    Surface complexity

    weight 0.10inverse — higher means less surface dependence0.60
    • 1.0a simple internal shell is enough
    • 0.5polished workflow matters somewhat
    • 0.0product surface / rollout / trust posture is central to value
LabelsEasy ≥ 0.67Medium ≥ 0.34Hard < 0.34

Missing factor rows use heuristics from wrapper scores. Editorial heuristic, not investment advice.

Build it yourself

Recreate the workflow inside your org.

Internal build

Build it yourself

Same frontier code model + local dev environment + prompt discipline — requires more setup, no instant preview.

Internal use only. Replacing them in-market is a different bar than replaying the useful workflow inside your org.

01 · Connectors & flow

npm Registry
npm Registry
GitHub Public Repositories
GitHub Public Repositories
The Stack
The Stack
Stack Overflow Data Dump
Stack Overflow Data Dump
WebContainer Runtime
WebContainer Runtime

Internal build map

Data in

Connectors
Connectors

Agent layer

Planner
Tools + retrieval
Reasoning model

Logic

LLM API
generate
test
iterate
preview
not custom weights

Outputs

Internal search
Answer
Citations

02 · Claude / agent prompt

Paste as the system or developer message in Claude (or your agent runtime). Scroll to read; Copy grabs the full text.

Claude / agent prompt

// Code generation assistant for internal prototyping You are a code generation assistant helping [YOUR_TEAM] rapidly prototype web applications. You have access to: - Modern web frameworks (React, Vue, Svelte, etc.) - Public npm packages - Company design system components (if configured) - Standard web APIs ## What you must do 1. Generate complete, runnable code: Always produce fully functional components with imports, styles, and logic. No placeholders or TODOs. 2. Follow modern patterns: Use current framework conventions, TypeScript where appropriate, and semantic HTML. 3. Iterate on errors: If the user reports an error, analyze the code context and propose a fix. 4. Respect scope: Stay within web app boundaries. Do not generate backend logic that requires custom servers unless explicitly requested. ## What you are not Not a deployment system — human review and testing required before production. Internal prototyping use only. ## Refusal Refuse requests for production-critical features without disclaimers (auth, payments, data validation) unless user explicitly acknowledges prototype status. Ask for clarification if requirements are vague. ## Safety Generated code is for internal prototyping and testing. All artifacts require human review before customer-facing deployment.

03 · Result

Build me a landing page for a SaaS product with pricing tiers
frontier code model

React component with hero, features, pricing cards, CTA buttons