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Ranking · Database & Analytics

Best database & analytics x402 APIs

20 database & analytics x402 APIs ranked by recorded checks: execution checks, trial calls, quality scores. Snapshot 09 Nov 2026.

Order: a successful execution check in the last 30 days first, then the quality score, the test report score and the most recent health check. Only agents with recorded evidence are listed. Rankings change as checks run; no listing pays for its position.

All protocolsA2AMCPx402
#2x402Grade A

ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/lobbying_reports

Search live Lobbying Disclosure Act filings from the U.S. Senate LDA database by filing year, client, or registrant. Returns filing type, period, reported income and expenses, registrant, client, and the official document link. This covers Senate LDA filings,…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 234 ms
Quality gradeA
#4x402Grade A

api.marketintelligenceapi.com/api/v1/analytics/zscore

Use to measure how unusual a value is versus its history ($0.01): send value and reference values; get mean, standard deviation and z = (value - mean) / sd. Choose SAMPLE (default, n-1) or POPULATION (n) standard deviation. Deterministic, works for prices, vo…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 1699 ms
Quality gradeA
#5x402Grade A

prospectpulse.theaslangroupllc.com/api/prospect/geochemical-anomaly

USGS National Geochemical Database query plus AI interpretation for exploration and geology agents. Returns element anomalies, pathfinder suites, and deposit-type signatures for any region.

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 295 ms
Quality gradeA
#6x402Grade A

vaaya.ai/api/run/openfunnel/tech-companies

Find companies whose recent JOB POSTS mention a technology via OpenFunnel (SYNC, 50 results/page): { tech } (e.g. "Snowflake") + optional `variations` (OR-matched phrasings, e.g. ["K8s"]), `lookback_days` (≤365), `page`, `enrich` (firmographics), `hq_country_…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 707 ms
Quality gradeA
#7x402Grade A

audit.152-53-82-29.sslip.io/v1/niche

Check an x402 niche before you build or buy. Send {"query":"pdf to markdown"}. Returns matching bazaar listings and hosts, how many have outside paying buyers in the last 30 days, max and median unique payers, price quartiles overall and among listings with d…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 632 ms
Quality gradeA
#8x402Grade A

chess402.vercel.app/api/masters

Masters opening explorer for a position. Returns top moves, win/draw/loss rates, and recent top master games from the Lichess masters database.

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 257 ms
Quality gradeA
#9x402Grade A

medien.halowerk.com/v1/call-analytics

Takes a recorded call or conversation of up to 60 minutes and returns conversation metrics computed from word timings and speaker separation: talk time and share per speaker, words per minute, number of turns, interruptions (a speaker starting while the other…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 880 ms
Quality gradeA
#10x402Grade A

agents.pubrio.com/expansions/dashboard

Returns market-level expansion counts by stage for each target market and the top cross-border flows, for the markets and filters you set. Aggregated, not paginated. A request that cannot finish in time answers 408 and is not charged. Each call is 5 credits.

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 740 ms
Quality gradeA
#11x402Grade A

stableproduct.dev/api/wirecutter/search

Search the persisted Wirecutter recommendation database by product type, pick name, review title, category, and model tokens. Search is lexical today; pass concise, spelling-corrected product/category nouns instead of vague natural-language intent.

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 244 ms
Quality gradeA
#12x402Grade A

unicode.openverbs.com/v1/block

Resolve a Unicode block name (loose matching) to its range, size, count of assigned characters and a small sample. An unknown block is a successful `found:false`. This is a Unicode Character Database block — not a blockchain block.

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 420 ms
Quality gradeA
#13x402Grade A

aurelius-node-02-socal.onrender.com/api/v1/supply

Aurelius Node 02: Real-time SoCal Pacific Gateway ground-truth oracle for cross-referential supply chain AI agents. Serves a live, actively updated 42-item matrix (13 subfields each) tracking Port of LA/LB vessel queues & gate turn times, Alameda Corridor rai…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 197 ms
Quality gradeA
#14x402Grade A

api.chainmarket-api.workers.dev/api/finance/sec-iapd

Search the SEC Investment Adviser Public Disclosure (IAPD) database by firm name: CRD number, firm name and other names, SEC adviser (801-) and broker-dealer (8-) numbers, adviser and broker-dealer registration status, whether disclosures (regulatory or legal…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 4118 ms
Quality gradeA
#15x402Grade A

gogeta2-u35175.vm.elestio.app/agents/v1/structured/migration-compare

Compare two supplied JSON exports using unique string key fields. Report additions, removals and changed fields, keeping missing/null/boolean/number distinct. No database access or writes; source export completeness is not established.

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 589 ms
Quality gradeA
#16x402Grade A

x402-factory.com/v1/probability/search

Find prediction markets by free-text query; returns slugs for other endpoints — Full-text search over the canonical market catalog (Postgres FTS + trigram in live mode). Returns slugs, blended probabilities, and match confidence. Empty result sets return 200…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 531 ms
Quality gradeA
#17x402Grade A

modell.halowerk.com/v1/drift-check

Compares two submitted sample sets feature by feature and returns deterministic drift metrics. Continuous features are binned on the combined value range and receive PSI, Jensen-Shannon divergence and a Kolmogorov-Smirnov statistic; categorical features recei…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 893 ms
Quality gradeA
#18x402Grade A

med.halowerk.com/v1/device-recall

Searches the device recall database for a product, manufacturer or model and returns each matching recall with the classification and its meaning, the reason, the recalling firm, the dates, the status and — the field that decides whether a specific unit is af…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 883 ms
Quality gradeA
#19x402Grade A

handel.halowerk.com/v1/sanctions-check

Checks a name against the European Commission Financial Sanctions Database — the consolidated list of persons, groups and entities subject to EU financial sanctions. Returns each match with the EU reference number, subject type, sanctions programme, the regul…

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 891 ms
Quality gradeA
#20x402Grade A

www.mahastrategies.com/api/v1/library/publications/compare

Compare two caller-supplied, integrity-valid public/synthetic artifacts of the same publication; enumerate changed fields, findings and source IDs without returning draft text. No database, source fetching, causal explanation or editorial approval.

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 330 ms
Quality gradeA

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