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Developer source code store

Stop rebuilding the boring parts.

BuildShelf sells tested, reusable foundations for developers who would rather build the differentiated part of their software.

Browse kitsCommercial license
Source included Tests included One-time purchase
ON THE SHELF03 focused kits
01
Evidence MonitorMonitoring · TypeScript
$199
02
Webhook ReliabilityBackend · Python
$199
03
CSV / Excel ImportData import · Python
$249
Verified source, documentation, and license inventories

Available now

Focused kits. More coming.

Choose a tested foundation, inspect the scope, and adapt the source to your product.

Evidence Monitor Starter Kit — Versioned HTML, PDF & File Monitoring previewMonitoring & Evidence
v0.1.0$199

Evidence Monitor Starter Kit — Versioned HTML, PDF & File Monitoring

Capture versioned HTML, PDFs, and files with safe fetching, diffs, audit history, and evidence exports.

  • Direct public HTML, PDF, and file monitoring
  • SSRF-sensitive destination, redirect, timeout, size, and MIME safeguards
  • Content-addressed raw version storage
TypeScriptNode.jsSQLiteDocker
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Webhook Reliability & Replay Starter Kit for Python previewBackend Reliability
v0.1.0$199

Webhook Reliability & Replay Starter Kit for Python

Receive, verify, deduplicate, retry, dead-letter, audit, and safely replay Stripe and GitHub events in Python.

  • Webhook HTTP endpoint with raw-body preservation
  • Stripe and GitHub signature adapters
  • Timestamp protection where provider protocols support it
PythonSQLiteWaitressDocker
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CSV / Excel Import Mapping & Validation Starter Kit for Python previewData Import & Validation
v0.1.0$249

CSV / Excel Import Mapping & Validation Starter Kit for Python

Map, normalize, validate, preview, stage, promote, audit, export, and roll back CSV/XLSX imports from tested Python source.

  • Config-driven CSV and restricted XLSX ingestion
  • Flat scalar schema, exact mappings, and normalization
  • Row-level and cross-field validation
PythonSQLiteCSV/XLSXDocker
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01

Own the source

No hosted platform or recurring access fee.

02

Know the boundaries

Capabilities, exclusions, and limitations stay explicit.

03

Build the useful part

Skip the common plumbing and focus on differentiation.