Endpoint · otherGETapi.x402node.dev /identity/username-check ?platforms=string&username=string
Check if a username is taken across 10 developer platforms (GitHub, GitLab, Reddit, HackerNews, dev.to, Medium, npm, PyPI, StackOverflow, ProductHunt).
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Check if a username is taken across 10 developer platforms (GitHub, GitLab, Reddit, HackerNews, dev.to, Medium, npm, PyPI, StackOverflow, ProductHunt). Returns per-platform {taken, status, url}. Use ?username=alice or ?username=alice and platforms=github,reddit. Built for AI agents helping pick handles, brand audits. Accepts payment on Base or Solana — either network works.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.01 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://api.x402node.dev/identity/username-check?platforms=string&username=string
Seen
first 34 days ago · last 27 days ago
27 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC, Solana
Listed on?
Base, Solana
Score, from free handshakes onlyweights 2026.09.1
UN
RATED
RATED
0.751 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held back by sample size, not by the seller · gap to 1.000 is 0.249: 0.157 uncertain ? + 0.093 short ? · 0.049 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 1.00 | 0.764 | 0.458 | 0 | −0.142 | |
| latency p95 it answered as fast as its class |
0.20 | 0.54 | 0.463 | 0.093 | −0.093 | −0.015 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.751 | gap to 1.000 = 0.249 · 0.093 short · 0.157 uncertain | 0.751 | −0.093 | −0.157 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.764 liveness
+ 0.200 × 0.463 latency p95
+ 0.200 × 1.000 price stability
= 0.751 → UNRATED: 26 of 30 paid calls weights 2026.09.1 · 26 samples · seed cap_01M1A5QKSNJETW0GRW8DT3VQPP|2026-08-14T22:55:40.889Z|2026.09.1
Verify it yourself
npx teppi-check https://api.x402node.dev/identity/username-check?platforms=string&username=stringcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5QKSNJETW0GRW8DT3VQPP