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UNCTAD · Tariff calculator · Step 1 of 7 · reviews

Concept note: the reviews

Two agents reviewed the concept note adversarially on 29-09-2026, each without a stake in it and without seeing the other's work. Each read the note against the prototype, eRegulations v7's code and the vertical-base template.

Reviewer Verdict Blocker Major Minor
Claude Freeze after fixes 3 7 6
Codex Rework before freezing 3 8 2

Their 29 findings merge into 21. Twenty were folded into the note the same day; eight need the analyst and became questions ?7 to ?14.

Findings, and what became of them

# Severity Finding Raised by What became of it
R1 blocker The contract cannot "keep ASYCUDA's shapes": v7's public API has its own; it holds amounts as whole numbers, results as single-precision figures, and one currency per request. Claude C2 · Codex C1 Folded, §3: the calculator's own contract, each provider translating. Confirmed by ?7
R2 blocker D14 sends OBR's requests to v7 while D2 says v7 is untouched. Claude C1 · Codex C9 Folded, §5 and §8. Asked, ?8
R3 blocker The template chooses one adapter per installation; a provider per country, and two at once, is new code. Claude C3 · Codex C7 Folded, §3. Asked, ?9
R4 blocker Shadow mode is not possible while OBR's test host is silent and no other host answers the new server. Claude C5 · Codex C2 Folded, §3 and §7. Asked, ?10
R5 blocker The legal and accuracy risk of a computed figure is understated for Burundi's bases, flat charges, currencies and levies. Codex C3 Folded, §4: one sheet per tax in step 4. Asked, ?13
R6 major Rwanda is not reached through ASYCUDA but through its trade portal, with a borrowed referrer and no agreement. Claude C4 Folded, §7. Asked, ?11
R7 major Only one real declaration is on record; an exact match would reproduce OBR's known defects. Claude C6 Folded, §4: a register of known defects. Asked, ?12
R8 major The EAC tariff differs by member: stays, remissions, COMESA preferences. Claude C7 Folded, §4 and §7
R9 major Embedding and abuse are unspecified: CORS open to all, a forgeable rate-limit key, customs quota spent by the public. Claude C8 · Codex C5, C6 Folded, §5: six requirements for modules 8 and 10
R10 major Nobody is named to host, hold the key or update the tariff after handover. Claude C9 · Codex question 5 Asked, ?14
R11 major The project's seven steps and the template's twelve documents collide; the template is built for signed-in applicants. Claude C10 · Codex C7 Folded, §6: the seven steps govern; what is set aside
R12 major A green check gate proves neither integration, security, accessibility, load nor use. Codex C8 Folded, §6: four checks per phase
R13 major OBR's requests of 24-09 are not traced into scope. Codex C10 Folded, new §8
R14 major No data source is named with its authority, format, frequency and checker. Codex C11 Folded, §4: a data register per country
R15 major "Data, never code" is too absolute: Rwanda already needs an extra input for vehicles. Codex C4 Folded, §4: data and parameters, plus declared rules with tests
R16 minor Nine routes, not four; the prototype began on 04-08; Admin PR #26 omitted; the template has more than one commit. Claude C11 · Codex C12, C13 Folded, §1, §9, sources; each checked against the repositories
R17 minor D1 decides a retirement that §5 defers; D13 narrows D5 without naming it. Claude C12 Folded, D1 and D13 reworded, §5, §7
R18 minor Staleness is not only a July event (TSR changed in December 2025); exchange rates need their own validity. Claude C13 Folded, §4 and §9
R19 minor Four connectors and publishing come before one pilot has passed. Claude C14 Folded, §4 and §6: CSV and manual entry only for 7.2
R20 minor Languages, accessibility, printing, health and data protection are missing. Claude C15 Folded, §2, one owning module each
R21 minor Two claims had no citation. Claude C16 Folded, §1 and the short answers

What both reviewers say holds

Claude, for the analyst · UNCTAD · working material, hidden from search engines Updated · 29-09-2026