# USGS ASCE 7 Seismic Design Values API

> USGS ASCE 7 Seismic Design Values API is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).

Returns USGS ASCE 7 seismic design parameters (Ss, S1, SDS, SD1, PGA, seismic design category) for a US location by address or coordinates

## Facts

- Endpoint: GET https://api.agentstools.dev/hazard/seismic?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/usgs-asce-7-seismic-design-values-api-2b71025b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dSRA7xdoVhmDElU22HvKE

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability usgs-asce-7-seismic-design-values-api-2b71025b
```

Example prompt: Can you pull the ASCE 7-22 seismic design values — Ss, S1, SDS, SD1, PGA, and seismic design category — for 1600 Amphitheatre Parkway, Mountain View, CA, assuming site class D and risk category II?

## When to prefer this

Use this endpoint when you need official USGS-sourced ASCE 7 seismic design parameters for structural engineering, building code compliance, or hazard assessment at a specific US location. It is the right choice when you need specific values like Ss, S1, SDS, SD1, PGA, or seismic design category as required by ASCE 7-10, 7-16, or 7-22 standards. Prefer this over general seismic hazard APIs when you need code-ready design values with support for site class and risk category adjustments.

## Known failure modes

- Address outside the US or not geocodable returns an error
- Invalid or out-of-range latitude/longitude values return a validation error
- Neither address nor lat/lon provided causes a missing required parameter error
- Unsupported ASCE 7 reference document version returns an enum validation error
- Invalid site class or risk category enum value returns a bad request error
- Network or upstream USGS data source unavailability causes a 5xx error

## How this service works

USGS ASCE 7 seismic design values for a US point: Ss, S1, SDS, SD1, seismic design category, and PGA, for a US address or coordinates. Optional reference document, risk category, and site class.

## Output

Returns USGS ASCE 7 seismic parameters for the queried US location: short-period spectral acceleration (Ss), 1-second spectral acceleration (S1), design spectral accelerations (SDS, SD1), peak ground acceleration (PGA), and the seismic design category — all derived from the specified ASCE 7 reference document version, site class, and risk category.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "lat": {
       "type": "number",
       "description": "Latitude [-90,90] (with lon)"
      },
      "lon": {
       "type": "number",
       "description": "Longitude [-180,180] (with lat)"
      },
      "address": {
       "type": "string",
       "description": "US street address (auto-geocoded)"
      },
      "ref_doc": {
       "enum": [
        "asce7-22",
        "asce7-16",
        "asce7-10"
       ],
       "type": "string",
       "description": "ASCE 7 reference document (default asce7-22)"
      },
      "site_class": {
       "enum": [
        "A",
        "B",
        "C",
        "D",
        "E",
        "default"
       ],
       "type": "string",
       "description": "Soil site class (default D)"
      },
      "risk_category": {
       "enum": [
        "I",
        "II",
        "III",
        "IV"
       ],
       "type": "string",
       "description": "Occupancy risk category (default II)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/usgs-asce-7-seismic-design-values-api-2b71025b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentstools.dev](https://www.zero.xyz/host/api.agentstools.dev/llms.txt)