Webhook signature

x402 resource x402 REST

sicher.halowerk.com · sicher.halowerk.com · Dev & Code

Provider site ↗

Providers each build their signing string differently — some sign only the body, others prepend a timestamp, an id, or a version marker in a fixed order — and getting that order wrong produces a mismatch that looks exactly like an attack. This checks the signature the way the named provider actually

Price per call 0.002 USDC per call published unit: per call

Calls · 30d 3 counted by the source, no daily split

Buyers · 30d — Observed sending wallets · Base USDC · partial sender history · purchases unverified

Volume · 30d — Observed Base USDC inflows · not attributable or not measured

Inflow growth · 7d — not comparable (baseline under $1 or window incomplete)

Trx · 30d — Observed transfers · not attributable or not measured

Attribution blocked. The payout address is also published by 698 other service(s); the volume cannot be attributed to one of them.

Observed inflows · last 30 days

No inflow observed in this window

The payout address is also published by 698 other service(s); the volume cannot be attributed to one of them.

Observed inflows by window for Webhook signature.
Window	Observed	Transfers
Last complete day (2026-11-01)	—	—
Last 7 days	—	—
Last 30 days	—	—
Growth, 7d against the 7 before	not comparable

Source: on-chain transfer scan (USDC on Base) Window: 2026-10-03 → 2026-11-01 Scanned: 30/30 days Sample: 0 days with a measurement First seen: never Last update: 2026-11-01

Daily history →. Observed transfers show value arriving at the payout address; they do not establish service revenue.

Blockchain wallets

Full addresses · public payment evidence

Receiving wallets are payment addresses published for this service. Sending wallets transferred funds to an exclusive receiving address; this alone does not prove a purchase or identify an agent.

Receiving wallets · provider payment addresses

All published receiving wallet addresses for Webhook signature.
Network	Full wallet address	Evidence
Base	0x2880edfff13100677bf97a3cbdf3bc34771c4e5e	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar

Sending wallets · observed counterparties

No sending wallet addresses have been retained for this service. Buyer wallets are unknown; daily totals and reported payer counts do not reveal their addresses.

Coverage includes retained scans only, not every historical transaction. Earlier daily totals cannot recover sender addresses. Sender lists exclude shared receiving wallets, whose transfers could belong to another service. A provider address does not establish wallet ownership.

Competitors & category benchmark

Rank the whole category →

Closest competitors Dev & Code

GitHub Repo & User Data 149 calls · 0.02 USDC per call —
Read contract 72 calls · 0.006 USDC per call —
VIN decoder (NHTSA) 69 calls · 0.004 USDC per call —
Skill: Decode this blob 66 calls · 0.007 USDC per call —
Decode 65 calls · 0.01 USDC per call $0.68

Sorted by source-measured calls, not by our opinion. The right-hand figure is observed inflow, which stays empty for peers whose address is shared.

Category benchmark 3,320 services in this category

With a measured call count	947 (28.5 %)
With a published price	1,231 (37.1 %)
With attributable inflows	30 (0.9 %)
Observed inflows · 30d	$130.92
Median measured calls	2
Median price per call	$0.01