series
concordancehq.duckdns.org · 4 paid endpoints · listed 2026-10-27
Full-text search across every aggregated data source in one call: news, SEC filings, court opinions, academic papers, government records, and developer discussions. One query surfaces everything concordant across independently-sourced, citable results -- not a single-source wrapper. Optional source/category/since filters.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| POST | concordancehq.duckdns.org/tools/search Full-text search across every aggregated data source in one call: news, SEC filings, court opinions, academic papers, government records, and developer discussi | $0.01 | Base, Solana |
| POST | concordancehq.duckdns.org/tools/series Tabular time-series lookup across economic indicators (FRED, World Bank, UN Comtrade), crypto TVL, weather, and stock quotes -- by source + series_id, with an o | $0.01 | Base, Solana |
| POST | concordancehq.duckdns.org/tools/digest One call, every category: pulls everything matching a topic across all aggregated sources and groups it by category (news, legal, academic, dev community, ...) | $0.03 | Base, Solana |
| POST | concordancehq.duckdns.org/tools/corroboration Is a claim independently corroborated across multiple unrelated sources, or does it trace back to a single origin? Groups matches by SOURCE (not category) so a | $0.04 | Base, Solana |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| 5 days ago | concordancehq.duckdns.org/tools/corroboration | 402 | 342 | valid x402 v2 terms |
Income on Base (7 days)
| Day | Transfers | USDC | |
|---|---|---|---|
| 2026-10-31 | 2 | $0.02 | |
| 2026-10-30 | 5 | $0.08 | |
| 2026-10-29 | 1 | $0.01 | |
| 2026-10-28 | 6 | $0.09 | |
| 2026-10-27 | 2 | $0.02 |
Is this your API?
<a href="https://logicnodes.io/observatory/p/concordancehq.duckdns.org"><img src="https://logicnodes.io/observatory/badge/concordancehq.duckdns.org.svg" alt="x402 status"></a>
Claim it for free with
x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/concordancehq.duckdns.org