Japan Corporate Registry API

https://houjin.agentic-jp.com

Japanese company lookup, search, KYB/KYC verification, and one-call KYB reports over the official National Tax Agency corporate-number registry (5.78M companies). Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: this origin serves plain HTTP+x402, not the A2A JSON-RPC protocol; use the machine-readable interfaces below.

52
reliability

Reliability & health

Uptime and response time from our own unpaid probes, plus the reliability score built from them.

Uptime

97.9% avg
0% 50% 100% Thu 10 PMSun 5 AMTue 1 PMThu 8 PM

Response time

p50 175ms · p95 517ms
0ms 550ms 1100ms Thu 10 PMSun 5 AMTue 1 PMThu 8 PM
Data table
Reliability history per time bucket over the last 7 days (hourly).
Bucket Uptime Probes Response time
8/13/2026, 10:00:00 PM 100% 1 178ms
8/13/2026, 11:00:00 PM 100% 1 175ms
8/14/2026, 12:00:00 AM 100% 1 168ms
8/14/2026, 2:00:00 AM 100% 1 178ms
8/14/2026, 3:00:00 AM 100% 1 176ms
8/14/2026, 4:00:00 AM 100% 1 1100ms
8/14/2026, 5:00:00 AM 100% 1 287ms
8/14/2026, 6:00:00 AM 0% 1
8/14/2026, 7:00:00 AM 100% 1 168ms
8/14/2026, 9:00:00 AM 100% 1 183ms
8/14/2026, 10:00:00 AM 100% 1 171ms
8/14/2026, 11:00:00 AM 100% 1 181ms
8/14/2026, 12:00:00 PM 100% 1 178ms
8/14/2026, 1:00:00 PM 100% 1 515ms
8/14/2026, 3:00:00 PM 100% 1 167ms
8/14/2026, 4:00:00 PM 100% 1 511ms
8/14/2026, 5:00:00 PM 100% 1 170ms
8/14/2026, 6:00:00 PM 100% 1 175ms
8/14/2026, 7:00:00 PM 100% 1 170ms
8/14/2026, 8:00:00 PM 100% 1 165ms
8/14/2026, 10:00:00 PM 100% 1 188ms
8/14/2026, 11:00:00 PM 100% 1 520ms
8/15/2026, 12:00:00 AM 100% 1 180ms
8/15/2026, 1:00:00 AM 100% 1 520ms
8/15/2026, 2:00:00 AM 100% 1 172ms
8/15/2026, 3:00:00 AM 100% 1 178ms
8/15/2026, 4:00:00 AM 100% 1 178ms
8/15/2026, 6:00:00 AM 100% 1 178ms
8/15/2026, 7:00:00 AM 100% 1 176ms
8/15/2026, 8:00:00 AM 100% 1 170ms
8/15/2026, 9:00:00 AM 100% 1 175ms
8/15/2026, 10:00:00 AM 100% 1 517ms
8/15/2026, 11:00:00 AM 100% 1 169ms
8/15/2026, 12:00:00 PM 100% 1 174ms
8/15/2026, 2:00:00 PM 100% 1 169ms
8/15/2026, 3:00:00 PM 100% 1 170ms
8/15/2026, 4:00:00 PM 100% 1 176ms
8/15/2026, 5:00:00 PM 100% 1 168ms
8/15/2026, 6:00:00 PM 100% 1 529ms
8/15/2026, 7:00:00 PM 100% 1 175ms
8/15/2026, 9:00:00 PM 100% 1 558ms
8/15/2026, 10:00:00 PM 100% 1 225ms
8/15/2026, 11:00:00 PM 100% 1 511ms
8/16/2026, 12:00:00 AM 100% 1 164ms
8/16/2026, 1:00:00 AM 100% 1 175ms
8/16/2026, 2:00:00 AM 100% 1 185ms
8/16/2026, 4:00:00 AM 100% 1 177ms
8/16/2026, 5:00:00 AM 100% 1 175ms
8/16/2026, 6:00:00 AM 100% 1 175ms
8/16/2026, 7:00:00 AM 100% 1 170ms
8/16/2026, 8:00:00 AM 100% 1 182ms
8/16/2026, 9:00:00 AM 100% 1 168ms
8/16/2026, 11:00:00 AM 100% 1 175ms
8/16/2026, 12:00:00 PM 100% 1 169ms
8/16/2026, 1:00:00 PM 100% 1 169ms
8/16/2026, 2:00:00 PM 100% 1 225ms
8/16/2026, 3:00:00 PM 100% 1 171ms
8/16/2026, 4:00:00 PM 100% 1 176ms
8/16/2026, 6:00:00 PM 100% 1 171ms
8/16/2026, 7:00:00 PM 100% 1 170ms
8/16/2026, 8:00:00 PM 100% 1 184ms
8/16/2026, 9:00:00 PM 100% 1 174ms
8/16/2026, 10:00:00 PM 100% 1 174ms
8/16/2026, 11:00:00 PM 100% 1 173ms
8/17/2026, 1:00:00 AM 100% 1 179ms
8/17/2026, 2:00:00 AM 100% 1 192ms
8/17/2026, 3:00:00 AM 100% 1 177ms
8/17/2026, 4:00:00 AM 100% 1 170ms
8/17/2026, 5:00:00 AM 100% 1 182ms
8/17/2026, 6:00:00 AM 100% 1 184ms
8/17/2026, 8:00:00 AM 100% 1 174ms
8/17/2026, 9:00:00 AM 100% 1 517ms
8/17/2026, 10:00:00 AM 100% 1 173ms
8/17/2026, 11:00:00 AM 100% 1 171ms
8/17/2026, 12:00:00 PM 100% 1 179ms
8/17/2026, 1:00:00 PM 100% 1 177ms
8/17/2026, 3:00:00 PM 100% 1 165ms
8/17/2026, 4:00:00 PM 100% 1 191ms
8/17/2026, 5:00:00 PM 100% 1 204ms
8/17/2026, 6:00:00 PM 100% 1 178ms
8/17/2026, 7:00:00 PM 100% 1 178ms
8/17/2026, 8:00:00 PM 100% 1 172ms
8/17/2026, 10:00:00 PM 100% 1 174ms
8/17/2026, 11:00:00 PM 100% 1 172ms
8/18/2026, 12:00:00 AM 100% 1 177ms
8/18/2026, 1:00:00 AM 100% 1 516ms
8/18/2026, 2:00:00 AM 100% 1 172ms
8/18/2026, 3:00:00 AM 0% 1
8/18/2026, 5:00:00 AM 0% 1
8/18/2026, 6:00:00 AM 100% 1 165ms
8/18/2026, 7:00:00 AM 100% 1 176ms
8/18/2026, 8:00:00 AM 100% 1 173ms
8/18/2026, 9:00:00 AM 100% 1 249ms
8/18/2026, 10:00:00 AM 100% 1 207ms
8/18/2026, 12:00:00 PM 100% 1 177ms
8/18/2026, 1:00:00 PM 100% 1 174ms
8/18/2026, 2:00:00 PM 100% 1 175ms
8/18/2026, 3:00:00 PM 100% 1 175ms
8/18/2026, 4:00:00 PM 100% 1 507ms
8/18/2026, 5:00:00 PM 100% 1 175ms
8/18/2026, 7:00:00 PM 100% 1 170ms
8/18/2026, 8:00:00 PM 100% 1 172ms
8/18/2026, 9:00:00 PM 100% 1 179ms
8/18/2026, 10:00:00 PM 100% 1 185ms
8/18/2026, 11:00:00 PM 100% 1 176ms
8/19/2026, 12:00:00 AM 100% 1 163ms
8/19/2026, 2:00:00 AM 100% 1 178ms
8/19/2026, 3:00:00 AM 100% 1 174ms
8/19/2026, 4:00:00 AM 100% 1 177ms
8/19/2026, 5:00:00 AM 100% 1 168ms
8/19/2026, 6:00:00 AM 100% 1 163ms
8/19/2026, 7:00:00 AM 100% 1 172ms
8/19/2026, 9:00:00 AM 100% 1 172ms
8/19/2026, 10:00:00 AM 100% 1 169ms
8/19/2026, 11:00:00 AM 100% 1 168ms
8/19/2026, 12:00:00 PM 100% 1 175ms
8/19/2026, 1:00:00 PM 100% 1 176ms
8/19/2026, 2:00:00 PM 100% 1 189ms
8/19/2026, 4:00:00 PM 100% 1 182ms
8/19/2026, 5:00:00 PM 100% 1 168ms
8/19/2026, 6:00:00 PM 100% 1 174ms
8/19/2026, 7:00:00 PM 100% 1 168ms
8/19/2026, 8:00:00 PM 100% 1 196ms
8/19/2026, 9:00:00 PM 100% 1 184ms
8/19/2026, 10:00:00 PM 100% 1 184ms
8/20/2026, 12:00:00 AM 100% 1 170ms
8/20/2026, 1:00:00 AM 100% 1 175ms
8/20/2026, 2:00:00 AM 100% 1 184ms
8/20/2026, 3:00:00 AM 100% 1 204ms
8/20/2026, 4:00:00 AM 100% 1 172ms
8/20/2026, 5:00:00 AM 100% 1 176ms
8/20/2026, 7:00:00 AM 100% 1 174ms
8/20/2026, 8:00:00 AM 100% 1 172ms
8/20/2026, 9:00:00 AM 100% 1 511ms
8/20/2026, 10:00:00 AM 100% 1 171ms
8/20/2026, 11:00:00 AM 100% 1 169ms
8/20/2026, 12:00:00 PM 100% 1 166ms
8/20/2026, 2:00:00 PM 100% 1 868ms
8/20/2026, 3:00:00 PM 100% 1 183ms
8/20/2026, 4:00:00 PM 100% 1 183ms
8/20/2026, 6:00:00 PM 100% 1 177ms
8/20/2026, 7:00:00 PM 100% 1 176ms
8/20/2026, 8:00:00 PM 100% 1 172ms
52
Composite reliability — the weighted average of the dimensions below, on a 0–100 scale.
Availability
100

How often it was reachable when we probed it (weight 35%).

Latency
100

How quickly it answers when it is up — fast scores high (weight 20%).

Security
98

Whether it serves over working TLS / https (weight 15%).

Transparency
36

Whether the operator disclosed what it does — description, schema, identity (weight 15%).

Activity
not yet measured

Observed on-chain payments to this endpoint's wallet — transactions, volume, and distinct paying wallets over the last month (weight 15%; not yet measured when we have not seen its wallet settle).

Confidence 100% — how much probe evidence backs this score. A thin history is flagged, not hidden.

See the scoring methodology for exactly how each number is computed.

Payment

Currencies
Networks
Facilitator
unknown
SDK
unknown

Operator

Company
inferred — unknown
Jurisdiction
Registrar
Cloudflare, Inc.
Domain registered
2026-05-18
Hosting network
CLOUDFLARENET
Hosting country

Operator context is derived from public RDAP/TLS records and unverified. Company and country are only available for endpoints that publish them (an OV/EV TLS certificate or a non-redacted domain record); most endpoints are CDN-fronted and disclose neither.