Transparency — how you check the numbers yourself

Level 1 — Integrity: does the data tie out? (7)

• AN01 — The recorded excerpts of ANP's per-well files (December 2023 in the new layout, latin-1; March 2022 in the old layout with a quoted multi-line title and thousand-dot numbers) become sums per environment, basin, field, operator and contract: Tupi adds up to 804,443.7557 bbl/day and 40,009.19 Mm3/day, all of it pre-salt held in a COLUMN (adding the pre-salt file again would double Tupi); the month is rejected, with the reason, for a missing onshore or offshore file, a different header, a period inside the file that is not the requested one, an unreadable or negative number, a pre-salt field that offshore does not have, or a national total outside the plausible range; numbers with thousand dots and decimal commas are read correctly.
• AN02 — The links on ANP's page (recorded excerpt) give the months under the four file name patterns ANP has used; the yearly 2005-2020 zip and months before 2021-01 stay out; a new file on the page would enter on its own.
• AN03 — The tax ID comes from ANP's list of concessionaires by contract number and links to the production only when the operator name in the production equals the contract operator's current name: Petrobras (Tupi), Eneva and PetroRecôncavo link; Atlanta (Enauta Energia against Brava Energia S.A.), Peregrino in 2022 (Equinor Brasil against Prio Tigris), Frade (Petro Rio Jaguar against Prio Forte S.A) and a contract missing from the list do not; a truncated or different-header list is refused.
• AN04 — The collection reads the page, the months it links and the concessionaires list, writes month by month and the result in the collection record of the meta table; a month missing on the server is an error for that month only; repeating does not duplicate and a re-read month replaces the previous one; the nightly run only downloads missing months and re-reads the last 3, the weekly one re-reads everything; an unreadable zip, a source that is down, a page with no link or an exception writes nothing, deletes nothing, never raises and leaves the reason in the record.
• AN05 — The ANP production table is part of the inheritance of external series, but only for months the new build did not bring (ANP renames operators in old months and the key includes the operator, so inheriting the same month twice would double it); the shrink guard counts the table.
• AN08 — With no ANP production table in the database the filtered JSON route answers 503 with Retry-After, the unfiltered one answers 200 with a notice, the page answers 200 in both languages with the series being collected notice, noindex, the licence, no number, no table and no link to the JSON route, the health route does not fail and shows the anp block as null, and the sitemap does not announce the page.
• AN12 — The ANP Monthly Bulletin (recorded one-page PDF excerpts of the by-operator table) gives every operator from 2024 on: August 2026 has 50 operators, Petrobras at 4,019,651.38 bbl/day and 196,391.44 Mm3/day, and the name SHELL BRASIL that ANP lists twice becomes one operator (summed); the decorative symbol glued to names is removed; a PDF that is unreadable, from another month, with no table or with a row whose total does not match oil plus gas times 6.2898 is refused; only monthly PDFs from 2024-01 are discovered; the collection only takes months after the last OFFICIAL per-well month, writes month by month, re-reads only the last 2 and links the tax ID by name through ANP's list (Petrobras, Brava and the SPE Prio Forte link; the SPE is not PRIO S.A.).

Level 2 — Semantics: does the account mean what the calculation assumes? (6)

• AN06 — Reads sum per operator and field and compute the share and the 12-month change against the same month of the previous year (March 2022 is not it, so no change; a December 2022 row makes it appear); an operator whose name changed has no change; the series of a field ignores case and accents; the link to a stock exists only when the full tax ID is the one of a company with a ticker: a company without ticker, an SPE with its own tax ID or a branch with the same root never links.
• AN07 — The production route returns the operators of the latest month with source, CC BY-ND 3.0 licence (not CC BY), use agreement, attribution and a citation line; fields with nivel=campo; the monthly series by tax ID (with or without punctuation), operator or field cut by from and to months; CSV with a fixed header per level; 400 for a bad parameter, two filters, a month with a series or from/to without a filter, and 404 for a request with no data.
• AN09 — The oil and gas production page in Portuguese and English opens with the sentence of the latest month, the notice that ANP's monthly files stop there (CAPTCHA from 2024), the four cards, the operators and fields tables with Petrobras and Tupi, how to read each column, the licence stated as NoDerivatives and not CC BY, the use agreement, the attribution, the citation line, the canonical link, a JSON-LD dataset with the licence of the source, no browser script other than JSON-LD and no stock link unless the tax ID is identical; the notice disappears when the latest month is recent.
• AN10 — The health route carries the anp block (latest month in the database and in the source, months since the last, last collection) and shows a source stopped in the same month as information without attention, raising attention only when the source has a newer month than the database; the Macro hub in both languages and the API hub carry the page and route cards; the sitemap announces the page with the last day of the month as last modified and never in the future; llms.txt cites page, route, licence and agreement; the methodology pages exist in both languages with the licence, the agreement, the source and the CAPTCHA.
• AN11 — The production connector tool calls the same route as the page: with no argument it returns the operators of the latest month with source, licence and agreement, with a field it returns the series, and a bad request comes back as an error field and never as an exception.
• AN13 — The manual exports folder of the public query (one CSV per month and environment) is read by the same parser: a month with Mar and Terra is complete, one with only Mar is labelled offshore only; Mar and Terra of the same month do not double; without the pre-salt file the pre-salt share is NULL, never zero, and a later pre-salt file becomes a column of Mar only if it is a subset; two files of the same month and environment count once and different contents warn; a month the official file already has stays official with a warning on divergence above 0.5%; no 12-month change is computed against a month of different scope; the page shows the latest loaded month, says 2024 onward is a manual export with partial coverage, lists the months without Terra and a coverage table by month and environment; the route carries source and scope and the manual coverage.

Level 3 — Economic: is the result possible in the real world? (0)

Other product tests (0)

Access gate, navigation and the MCP connector — they test whether the product works, not whether a number is right, so they don't fit the 3 levels above by design. Still counted, still listed: