Endpoint · evidencePOSTgoodsong.dev /verify/filing
Verify an SEC filing: given a filer's CIK and a claimed accession number, does that filing actually exist, and does its form type/filing date match what's claimed?
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Verify an SEC filing: given a filer's CIK and a claimed accession number, does that filing actually exist, and does its form type/filing date match what's claimed? Checked against SEC EDGAR's submissions API. Catches a fabricated or misattributed filing citation, including a real-looking accession number paired with an invented form type or date.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.005 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://goodsong.dev/verify/filing
Seen
first 29 days ago · last 1 day ago
54 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.729 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.271: 0.071 uncertain ? + 0.200 short ? · 0.071 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 | 0.882 | 0.529 | 0 | −0.071 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.729 | gap to 1.000 = 0.271 · 0.200 short · 0.071 uncertain | 0.729 | −0.200 | −0.071 |
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 × 0.882 liveness
+ 0.200 × 1.000 price stability
= 0.729 → UNRATED: 52 of 30 paid calls weights 2026.09.6 · 52 samples · seed cap_01M1RD8PDZK6RQ7JGJHE5JAKJ5|2026-09-03T03:21:57.983Z|2026.09.6
Verify it yourself
npx teppi-check https://goodsong.dev/verify/filingcurl -s https://api.teppi.xyz/v1/trust/cap_01M1RD8PDZK6RQ7JGJHE5JAKJ5