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The Controladoria-Geral da União keeps Brazil’s federal integrity registers, which every public buyer and most compliance teams check before dealing with a company: CEIS, the companies and people barred from public contracting by any federal, state or municipal body; CNEP, the companies punished under the Anti-Corruption Law (12.846/2013); CEAF, the federal civil servants expelled; CEPIM, the non-profits barred from federal transfers; and the leniency agreements companies signed with CGU. About 33,000 sanctions in all. One search across the five registers, by name, CNPJ or CPF, register, party type and the sanctioning body’s state, brought up to date every day. A sanction CGU removes stops matching the same day.
The whole source, organized and ready to query: every endpoint on this page answers in milliseconds. Every response carries as_of: how current the data is. How datasets work.

Search sanctions

POST /br/cgu/sanctions-search/v1 Dataset Searches the five registers by any combination of name, CNPJ or CPF, register, party type and the sanctioning body’s state.
Returns as_of (how current the data is), the applied filters, total (matches across every page), page, per_page, total_pages, count and sanctions[], by name. A party with several sanctions has several. Every sanction carries id (the key, e.g. ceis-72529), list (ceis, cnep, ceaf, cepim or leniency), sanction_code (CGU’s own code), party_type (individual or company), document_type (cpf, cnpj or foreign), document (a CNPJ in full, a CPF masked the way CGU masks it, ***.456.789-**), name, names[] (every name the register gives the party), sanction_type, start_date, end_date, publication_date, final_judgment_date, information_date (all yyyy-mm-dd), publication, publication_detail, scope, sanctioning_body, sanctioning_body_state (the body’s state, not the party’s), sanctioning_body_sphere (federal, state or municipal), legal_basis, process_number, information_source, notes, fine_amount (reais, CNEP fines), reason (why a non-profit is barred), public_servant ({ position, role, unit, act_number }, CEAF only) and agreement ({ status, terms, effects[] }, leniency agreements only). Empty fields are null. Values stay in Portuguese, as CGU writes them.
query matches every name the register gives the party (as sanctioned, as the sanctioning body reported it, and the company’s registered and trade names), word by word and without stemming. document_number is an exact match on a CNPJ or a CPF; CPFs come back masked. Brought up to date daily.
A sanction on the register is in force: CGU removes one when it ends, and it stops matching here the same day. A past end_date does not mean it has ended; a declaration of unfitness, for one, lasts until the company is rehabilitated.

One sanction

POST /br/cgu/sanction/v1 Dataset Resolves one sanction by its id and returns the full record.
Returns found, id, as_of and sanction (null when not found). Every sanction carries id (the key, e.g. ceis-72529), list (ceis, cnep, ceaf, cepim or leniency), sanction_code (CGU’s own code), party_type (individual or company), document_type (cpf, cnpj or foreign), document (a CNPJ in full, a CPF masked the way CGU masks it, ***.456.789-**), name, names[] (every name the register gives the party), sanction_type, start_date, end_date, publication_date, final_judgment_date, information_date (all yyyy-mm-dd), publication, publication_detail, scope, sanctioning_body, sanctioning_body_state (the body’s state, not the party’s), sanctioning_body_sphere (federal, state or municipal), legal_basis, process_number, information_source, notes, fine_amount (reais, CNEP fines), reason (why a non-profit is barred), public_servant ({ position, role, unit, act_number }, CEAF only) and agreement ({ status, terms, effects[] }, leniency agreements only). Empty fields are null. Values stay in Portuguese, as CGU writes them.
An id no register carries returns found: false with HTTP 200, not an error. That is also the answer for a sanction CGU has removed.

Full reference

Schemas, all response fields, and an interactive playground.