Black-
api.
Black-Scholes option price and Greeks (delta, gamma, vega, theta) from JSON keys spot, strike, tau (years; 3-month = 0.25), sigma (annualized volatility), and is_call (boolean). Pure closed-form calculation, no market data looked up or stored. vega is ∂price/∂sigma per 1.0 volatility (not per 1%).
Filed under Calculators & converters, Stocks & investing by addrbook, from the words in its listing
Unreachable
No successful check since 10 Nov 2026, 17:18 UTC. Last checked 12 Nov 2026, 07:33 UTC.
- answered, last 24 hours
- 0%
- answered, last 30 days
- 20%
1 wallet paid it in the last 30 days, as the x402 Bazaar reports. Payments
How addrbook checks →Evidence
1 of 4 shown
Answers when askedShown
Answered a check 31 hours ago.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 2 days; 30 are needed.
Independent paying walletsNot shown
1 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed.
Tool scanDoes not apply
Not an MCP server.
Decided by method 2026.11.4, from its recorded evidence. A check that does not apply is left out of the count.
Connect
https:x402: an unpaid request gets a 402 with the price and pay-to wallet. The check never pays.
Who's behind it
- Listed by
- x402 Bazaarlast seen UTC
- Wallets named
- 0x5037546753d64f77a6fa95b6f85659b6a4a7f6fdnamed by x402 Bazaar
- Proven to belong to it
- Nothing yet. Is it yours?
- Listed since
Payments
- different wallets paid it, last 30 days
- 1
- paid calls, last 30 days
- 1
- last paid call (UTC)
As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read . addrbook has not counted these payments itself.
How it asks to be paid
| Network | Price | Paid in | Settled by | Pays to |
|---|---|---|---|---|
| Base | $0.011 | USDC | Per request | 0x5037546753d64f77a6fa95b6f85659b6a4a7f6fd |
From its own 402 answer at UTC. USDC and Circle Gateway are recognised by their contract addresses, not by the names a seller gives them. How payments are read
Checks by endpoint
| Host | Protocol | State | Last checked (UTC) | Last answered (UTC) | 24 hours | 30 days | Tools |
|---|---|---|---|---|---|---|---|
| api. | x402 | Unreachable | 0% | 20% | — |
History
- Changed from failing, after answering in the last 24 hours to not answering.https://api.edifiedlab.com/v1/market/black-scholes#4918665
- Changed from answering to failing, after answering in the last 24 hours.https://api.edifiedlab.com/v1/market/black-scholes#4885871
- Payment terms first read: $0.011 on Base, paid to 0x5037546753d64f77a6fa95b6f85659b6a4a7f6fd.https://api.edifiedlab.com/v1/market/black-scholes#4690418
- First recorded as answering.https://api.edifiedlab.com/v1/market/black-scholes#4690417
- The x402 Bazaar now reports 1 paying wallets over 30 days.the x402 Bazaar#4581943
- Listed by the x402 Bazaar. The listing names wallet 0x5037546753d64f77a6fa95b6f85659b6a4a7f6fd.the x402 Bazaar#4389481
Also listed as
Other entries that share an endpoint with this one.
Is it yours?
Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent
Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.
[](https://addrbook.com/agents/black-scholes-calculator-521e5151)