arandova.
OBSERVATÓRIO ARANDOVA · v.2.04 · ABR/2026

Municipal transparency, all in one place.

Public data on politicians, companies, contracts, health and education across the 5,570 municipalities of Brazil. No paywall, with cited sources.

Aggregates official sources with per-number provenance and traceable corrections. Derived indicators marked with ∑.

São Bernardo do CampoPIB per capitaPNCPSobral / CE
Manifesto

Public information exists. It's scattered across portals that don't talk to each other, in PDFs not built to be read, in spreadsheets whose columns change name with every administration.

The Observatório does not invent numbers. It reconstructs the paths already there — preserves provenance, shows the calculation, records every erratum.

Every city has an official source. Here they talk to each other.

The network, todaylive data

Coverage in real time

MUNICIPALITIES
5.571
INDICATORS
89
CONTRACTS
0
COMPANIES
0
data updated —

In focuslive data

5 of 3,218
SP · SOUTHEAST

São Paulo

11,9 M hab·Sudeste
open →RJ · SOUTHEAST

Rio de Janeiro

6,7 M hab·Sudeste
open →MG · SOUTHEAST

Belo Horizonte

2,4 M hab·Sudeste
open →BA · NORTHEAST

Salvador

2,6 M hab·Nordeste
open →PR · SOUTH

Curitiba

1,8 M hab·Sul
open →RS · SOUTH

Porto Alegre

1,4 M hab·Sul
open →
ÍNDICE · § 02mock

Choose by

5,570 municipalities · 89 indicators · ↳ Apr/17

Sudeste1.668Nordeste1.794Sul1.191Centro-Oeste467Norte451
Open full catalog
Coverage by statemock

Where we are

Dark grey: coverage ≥ 80% of the state's municipalities.

RR73%AP81%AM68%PA71%MA66%CE86%RN82%AC74%RO70%TO72%PI80%PE85%PB83%AL76%SE81%BA80%MT71%DF—GO84%MG87%ES88%MS75%SP94%RJ92%PR89%SC91%RS86%
Logbookmock

Latest updates

17/abr
04:12SICONFI · 2024 anual synced across 5,412 municipalities.+12 errata generated · 3 indicators recalculated
15/abr
22:08PNCP daily ingest — 4,281 new contracts, R$ 2.1bn.↳ snapshot c8d4a91
14/abr
11:30DataSUS · CNES rebuild for Norte and Nordeste.↳ beds / capita recalculated in 1,848 municipalities
12/abr
09:00INEP — IDEB 2023 lower-secondary published.↳ 2 formulas tweaked · see method
10/abr
17:45Errata #4137 — Sobral / CE: 2021 GDP corrected after IBGE rectification.↳ −R$ 1,802/cap · previous value preserved
Official sourcesmock

Eight bases, continuous sync.

IBGE
Demography, economy, geography
↳ 17/abr
BCB
Financial indicators
↳ 17/abr
TSE
Politics and elections
↳ 12/abr
RF
CNPJ / companies
↳ 10/abr
PNCP
Public contracts
↳ 17/abr
CNES
Health
↳ 16/abr
INEP
Education
↳ 03/abr
PNUD
HDI, Atlas
↳ 2013
DESENVOLVEDORES · API v1

Everything you see here, as JSON.

Public REST, generous free tier, deterministic responses. Each response includes citation, sync timestamp and — for derived indicators — the full formula.

# GET /v1/municipios/3548708
curl https://api.arandova.org/v1/municipios/3548708

{
  "ibge": 3548708,
  "nome": "São Bernardo do Campo",
  "populacao": {
    "valor": 843924,
    "fonte": "IBGE",
    "sync": "2026-04-17T02:40-03"
  },
  "idhm": { "valor": 0.805, "fonte": "PNUD" },
  "receita_per_capita": {
    "valor": 5128.42,
    "calculado": "receita / populacao",
    "fontes": ["SICONFI", "IBGE"]
  }
}
Read docs ›Python examples
CATÁLOGO · § 04mock

Index of indicators

Each indicator exposes its formula and source. ∑ marks derived ones.

01Resident populationIBGE · estimates / census100%annual02IDHMPNUD · Atlas Brasil 2013100%10 yr03 ∑GDP per capitaIBGE · regional accounts99,8%annual04Net current revenue · RCLSICONFI · RREO bimonthly96,3%bim.05 ∑Personnel expense · % RCLSICONFI · RGF quarterly94,1%quad.06 ∑ESF coverageCNES · DATASUS · e-SUS APS100%monthly07IDEB · early gradesINEP · biennial98,7%bien.08Active contracts · 12mPNCP · daily100%daily09 ∑Top-10 supplier concentrationPNCP · aggregated100%daily10 ∑Infant mortality · ‰SIM · SINASC · DATASUS99,2%annual12Asset disclosure · mandatesTSE · q3 / 2026—soon
showing 11 of 89 indicatorssee all 89 ›