attester.dev

https://attester.dev/v1/package/exists

Shares a payout wallet with 10 other endpoints — its adoption is attributed from that shared wallet's traffic, not earned exclusively.

Deterministic package existence for PyPI and npm, built from real published artifacts (never LLM guesses). Negative answers and typosquat-adjacency flags carry signed proof. $0.002 USDC per check.

45
reliability

Reliability & health

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

7 days 30 days

Uptime

97.1% avg
0% 50% 100% Sep 8Sep 18Sep 27Oct 7

Response time

p50 3347ms · p95 7466ms
0ms 2450ms 4900ms Sep 8Sep 18Sep 27Oct 7
Data table
Reliability history per time bucket over the last 30 days (daily).
Bucket Uptime Probes Response time
9/8/2026, 12:00:00 AM 100% 21 2419ms
9/9/2026, 12:00:00 AM 100% 20 2370ms
9/10/2026, 12:00:00 AM 100% 15 2216ms
9/11/2026, 12:00:00 AM 100% 9 2841ms
9/12/2026, 12:00:00 AM 100% 9 2610ms
9/13/2026, 12:00:00 AM 100% 16 2655ms
9/14/2026, 12:00:00 AM 100% 15 2817ms
9/15/2026, 12:00:00 AM 100% 16 3013ms
9/16/2026, 12:00:00 AM 100% 16 2922ms
9/17/2026, 12:00:00 AM 100% 15 2917ms
9/18/2026, 12:00:00 AM 100% 13 2955ms
9/19/2026, 12:00:00 AM 100% 13 3012ms
9/20/2026, 12:00:00 AM 92% 13 2992ms
9/21/2026, 12:00:00 AM 100% 13 2900ms
9/22/2026, 12:00:00 AM 100% 12 3054ms
9/23/2026, 12:00:00 AM 93% 14 3028ms
9/24/2026, 12:00:00 AM 100% 13 3208ms
9/25/2026, 12:00:00 AM 100% 14 3188ms
9/26/2026, 12:00:00 AM 100% 15 3015ms
9/27/2026, 12:00:00 AM 100% 14 3195ms
9/28/2026, 12:00:00 AM 100% 13 3316ms
9/29/2026, 12:00:00 AM 100% 13 3271ms
9/30/2026, 12:00:00 AM 100% 12 3526ms
10/1/2026, 12:00:00 AM 92% 12 3279ms
10/2/2026, 12:00:00 AM 100% 13 3467ms
10/3/2026, 12:00:00 AM 100% 13 2608ms
10/4/2026, 12:00:00 AM 82% 11 3783ms
10/5/2026, 12:00:00 AM 70% 10 3789ms
10/6/2026, 12:00:00 AM 100% 11 4839ms
10/7/2026, 12:00:00 AM 86% 14 4032ms
45
Composite reliability — the weighted average of the dimensions below, on a 0–100 scale.
Availability
98

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

Latency
0

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

Security
91

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

Transparency
61

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

Activity
6

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
USDC
Networks
base
Facilitator
unknown
SDK
unknown

Operator

Company
inferred — unknown
Jurisdiction
—
Registrar
CloudFlare, Inc.
Domain registered
2026-07-20
Hosting network
DIGITALOCEAN-142-93-0-0
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.

On-chain activity (base)

8
payments (30d)
0.02
USD volume (30d)
5
paying wallets (30d)

Payments per day

last payment 9/28/2026
0 3 5 Sep 14Sep 17Sep 24Sep 28
Data table
Settled payments per day.
Day Payments Volume (USD) Paying wallets
9/14/2026 1 0 1
9/17/2026 1 0.01 1
9/24/2026 4 0.01 1
9/28/2026 2 0 2

This payout wallet is shared: figures cover all 11 endpoints paid at it, since payments cannot be attributed to one of them. Only payments settled on chains and facilitators we index.

Linked by wallet — likely same operator

On-chain agent identity and the x402 endpoint that shares its settlement wallet.

https://attester.dev/spend-check x402 endpoint
Response schema 
{
  "additionalProperties": true,
  "title": "Response Package Exists Endpoint V1 Package Exists Post",
  "type": "object"
}