Comparison
Money-in-politics APIs, compared.
The landscape changed when OpenSecrets discontinued its public API in April 2025. Here is a comparison of what is actually available — features, data coverage, and pricing — so you can pick the right tool.
| ATCSTW Data API | OpenSecrets | Bloomberg | ProPublica APIs | |
|---|---|---|---|---|
| Public API status | Live (v1) | Discontinued Apr 2025 | Terminal / API | Partial (some datasets) |
| Campaign finance | Aggregates | Website only now | Yes | FEC itemizer (archived) |
| Lobbying disclosures | Yes | Website only | Yes | No |
| Corporate violations | Yes | No | No | Nonprofit Explorer only |
| OSHA / wage theft | Yes | No | No | No |
| Private equity mapping | Yes | No | Via Capital IQ | No |
| Patent data | Yes | No | No | No |
| Databased connections | Yes — Powered by Lux | No | No | No |
| Provenance stamp on responses | Yes | — | — | — |
| Free tier | 1,000 calls/mo | API discontinued | No | Limited |
| Starting price | $0 | N/A | ≈$25,000/yr | $0 (limited) |
| Data packs | $69–$99/mo per pack | — | — | — |
| Self-serve signup | Instant | No | Sales call | Yes |
| Webhooks | All Access and up | No | Enterprise | No |
COMPARISON AS PUBLISHED ON THE LEGACY PAGE, REBRANDED · EVERY CELL RECHECKED BEFORE PUBLISH
Our take.
We are a party to this comparison, so weigh it accordingly. On the checkable facts: ATCSTW is the only live, self-serve API purpose-built for money-in-politics plus corporate accountability data, with a free tier and published prices. If your work needs terminal-grade market data, buy the terminal. If it needs the public record — resolved, connected, and sourced — that is the graph we serve.