Roundhouse

api.edifiedlab.com

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%).

TradingLiveeip155:8453Exactvia cdp
https://api.edifiedlab.com/v1/market/black-scholes
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far.
—
Verified settled volume
0 settlements proven x402 by their on-chain EIP-3009 marker.
$0.011
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-16 12:58Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x5037546753d64F77A6fA95B6f85659B6a4A7F6FD

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.011USDC≈ $0.011 USD
on Base · exact scheme

Pay 0.011 USDC on Base to 0x5037…7F6FD. The signed payment is good for 10 minutes.

Paid to
0x5037…7F6FD
USD Coin contract
0x8335…02913
Payment window
10 minutes
As published
11000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USDC",
      "chainId": 8453,
      "version": "2",
      "challengeId": "cdp-c4e674faa13d588b31c7e79e745c2d56",
      "spenderAddress": "0x402085c248EeA27D92E8b30b2C58ed07f9E20001",
      "assetTransferMethod": "permit2"
    },
    "payTo": "0x5037546753d64F77A6fA95B6f85659B6a4A7F6FD",
    "amount": "11000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 600
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "tau": 0.25,
          "spot": 100,
          "sigma": 0.2,
          "strike": 100,
          "is_call": true
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "vega": 19.9221957047,
          "delta": 0.5199388058,
          "gamma": 0.0398443914,
          "price": 3.9877611677,
          "action": "calculate",
          "payload": "black_scholes",
          "theta_per_day": -0.0218325432
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "spot",
                "strike",
                "tau",
                "sigma",
                "is_call"
              ],
              "properties": {
                "tau": {
                  "type": "number",
                  "minimum": 0,
                  "description": "time to expiry in years (3-month = 0.25)"
                },
                "rate": {
                  "type": "number",
                  "default": 0,
                  "description": "annualized risk-free rate (optional; default 0)"
                },
                "spot": {
                  "type": "number",
                  "exclusiveMinimum": 0
                },
                "sigma": {
                  "type": "number",
                  "minimum": 0,
                  "description": "annualized volatility"
                },
                "strike": {
                  "type": "number",
                  "exclusiveMinimum": 0
                },
                "is_call": {
                  "type": "boolean",
                  "description": "true for a call, false for a put"
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "payload",
                "action",
                "price",
                "delta",
                "gamma",
                "vega",
                "theta_per_day"
              ],
              "properties": {
                "vega": {
                  "type": "number",
                  "description": "∂price/∂sigma per 1.0 vol"
                },
                "delta": {
                  "type": "number"
                },
                "gamma": {
                  "type": "number"
                },
                "price": {
                  "type": "number"
                },
                "action": {
                  "type": "string",
                  "const": "calculate"
                },
                "payload": {
                  "type": "string",
                  "const": "black_scholes"
                },
                "theta_per_day": {
                  "type": "number"
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-16 12:58Z
Last indexed by Roundhouse
2026-09-24 11:00Z
Last enriched (probe, favicon, geo)
2026-09-19 14:45Z
x402 version
2
Max timeout
600s
Liveness probe
HTTP 405
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service api.edifiedlab.com and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=api.edifiedlab.com'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.edifiedlab.com/v1/market/black-scholes, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.