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Open projects, not client work.

These are tools Claudius built and still runs. They are not anonymised client engagements. Those stay on the Work page.

Landed cost

A Python CLI that prices an import into South Africa, Botswana, or Zimbabwe. Landed cost, break-even, and margin after freight, duty, VAT, clearing, and lithium surcharges.

Specimen, not client data.

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Camping lantern, South Africa

ZAR

Specimen landed-cost walk for one product
FOBZAR 87.97
DutyZAR 14.62
VATZAR 22.21
LandedZAR 170.25
Specimen, not client data. Margin 51.2%.

Card features

A local PySpark job on a generated ZAR card ledger. Spend by MCC group, recurring debit orders, income stability, and a low, medium, or high churn-risk label.

Specimen, not client data.

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Churn-risk labels

  • low87.0%
  • medium3.7%
  • high9.3%
Specimen, not client data. Latest month 2025-03.

DHIS2 to dbt

A starter that pulls a slice of the public DHIS2 Sierra Leone demo into DuckDB, models it with dbt, and writes this page from the snapshot.

Public data.

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Latest national prints

Latest national value for each demo indicator
ANC 1 Coverage109.5
ANC 1-3 Dropout Rate31.3
ANC 2 Coverage99.9
Public DHIS2 demo data. Not client data.

jobmail

Reads a .mbox file or a folder of .eml messages and makes one row per application. Greenhouse, Ashby, Lever, Workday, and iCIMS. The mail in this snapshot is specimen data.

Specimen, not client data.

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Funnel

  • applied3
  • assessment1
  • interview1
  • rejected2
Specimen, not client data

SA public warehouse

SARB repo and prime, Stats SA CPI, and ZAR against USD, EUR, GBP, and BWP. Month-end public prints, loaded into DuckDB, not a trading feed.

Public data.

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Latest prints

Latest repo, CPI, real repo, and USDZAR
Repo7.25
CPI y/y3.30
Real repo3.70
USDZAR16.55
Public South African series. Not client data.

Data quality assessment

A data-quality assessment tool. The live dashboard snapshot could not be read from the private GitHub repository in this build, so the figures are not on this page yet.

Specimen, not client data.

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Dashboard snapshot

Data-quality snapshot status
StatusTODO: snapshot not in this build
Specimen, not client data

If your numbers do not add up, a report is still built by hand, or your team has outgrown its tools, get in touch.

A few sentences on the situation are enough. We reply from the same address you see here.

Write to Cipher Labshello@cipherlabs.cc