Endpoint · lookupPOSTpreflight402.com /v1/deps/check
Call before installing packages suggested by a language model.
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Call before installing packages suggested by a language model. Returns, for each npm or PyPI package name, whether it actually exists in the registry, whether it is deprecated or yanked, and — when the name is not found — the closest real package names. Catches hallucinated dependencies (slopsquatting) before an agent installs them. Never inspects package contents and never returns a safety verdict.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.05 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://preflight402.com/v1/deps/check
Seen
first 21 days ago · last 12 hr ago
38 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.700 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.300: 0.100 uncertain ? + 0.200 short ? · 0.100 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.00 | 0.000 | 0.000 | −0.200 | 0 | |
| liveness it answered at all |
0.60 | 1.00 | 0.834 | 0.500 | 0 | −0.100 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.700 | gap to 1.000 = 0.300 · 0.200 short · 0.100 uncertain | 0.700 | −0.200 | −0.100 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.000 latency p95
+ 0.600 × 0.834 liveness
+ 0.200 × 1.000 price stability
= 0.700 → UNRATED: 37 of 30 paid calls weights 2026.09.6 · 37 samples · seed cap_01M2CMPDJ07HJ4EFZYR8ZSDJDM|2026-09-03T08:05:28.550Z|2026.09.6
Verify it yourself
npx teppi-check https://preflight402.com/v1/deps/checkcurl -s https://api.teppi.xyz/v1/trust/cap_01M2CMPDJ07HJ4EFZYR8ZSDJDM