Endpoint · computeGETdata.greeneris.io /v1/fr/siret-check ?number=44306184100047
Instant pre-validation of French company numbers before invoicing or costly Sirene API calls.
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Instant pre-validation of French company numbers before invoicing or costly Sirene API calls. Auto-detects SIREN (9 digits) vs SIRET (14 digits), applies the INSEE Luhn rule and the documented La Poste exception (356000000*: digit sum mod 5). Query: ?number=44306184100047 (spaces/dots/dashes tolerated). Returns valid, type, siren, nic and the rule applied. Pure offline computation, 1y cache.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.001 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://data.greeneris.io/v1/fr/siret-check?number=44306184100047
MCP server on this host: io.github.contentfactory/eu-verify
Seen
first 34 days ago · last 8 days ago
64 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.795 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.205: 0.074 uncertain ? + 0.130 short ? · 0.005 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.35 | 0.294 | 0.059 | −0.130 | −0.011 | |
| liveness it answered at all |
0.60 | 1.00 | 0.894 | 0.536 | 0 | −0.064 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.795 | gap to 1.000 = 0.205 · 0.130 short · 0.074 uncertain | 0.795 | −0.130 | −0.074 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.294 latency p95
+ 0.600 × 0.894 liveness
+ 0.200 × 1.000 price stability
= 0.795 → UNRATED: 58 of 30 paid calls weights 2026.09.6 · 58 samples · seed cap_01M1A59YE2MKNRQAGQHHMVJX95|2026-09-02T09:32:41.189Z|2026.09.6
Verify it yourself
npx teppi-check https://data.greeneris.io/v1/fr/siret-check?number=44306184100047curl -s https://api.teppi.xyz/v1/trust/cap_01M1A59YE2MKNRQAGQHHMVJX95