# `usgs_quake__earthquake_get_event`

**Get Earthquake Event Detail**

Fetch detail for a specific earthquake by USGS event ID. Returns the same normalized event a search result carries, plus a projection of the analysis products only the single-event response holds: PAGER impact alert and report link, ShakeMap peak intensity and ground motion, DYFI felt-report totals, the moment-tensor focal mechanism, landslide and liquefaction alerts, origin quality (azimuthal gap, station count, location uncertainty), and finite-fault rupture dimensions. Products are omitted when USGS produced none — a small automatic event typically has no detail at all, while a large reviewed one has most of it. Event IDs appear in the "id" field of earthquake_get_feed and earthquake_search results. This tool is USGS-only — EMSC events have no per-event detail endpoint.

- Server: [USGS Earthquakes](https://gateway.mcpharbor.dev/docs/servers/usgs_quake) (`dev.mcpharbor.gateway/usgs_quake`)
- Price per call: $0.0001 (100 micro-USD); only tools/call is charged
- Endpoint: `https://gateway.mcpharbor.dev/mcp` or `https://gateway.mcpharbor.dev/mcp/usgs_quake`
- Upstream tool: exposed by the provider; called through this gateway as `usgs_quake__earthquake_get_event`
- Provider terms: <https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits> (verified 2026-09-19)
- Upstream API documentation: <https://earthquake.usgs.gov/fdsnws/event/1/>
- Rate limit: 600 requests per minute
- Attribution required: Not legally required (public domain), but USGS asks that proper credit be given, e.g. 'Credit: U.S. Geological Survey, Department of the Interior/USGS'. Do not imply USGS endorsement.

## Parameters

- `event_id` (string, required): USGS event ID, e.g. "hv74966427" or "us6000sznj". Found in the "id" field of earthquake_get_feed and earthquake_search results.

## Example call

Request headers and body:

```http
POST /mcp HTTP/1.1
Host: gateway.mcpharbor.dev
Authorization: Bearer <your gateway API key>
Content-Type: application/json
Accept: application/json, text/event-stream
MCP-Protocol-Version: 2026-07-28
Mcp-Method: tools/call
Mcp-Name: usgs_quake__earthquake_get_event
```

```json
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "_meta": {
      "io.modelcontextprotocol/clientCapabilities": {},
      "io.modelcontextprotocol/clientInfo": {
        "name": "example-agent",
        "version": "1.0.0"
      },
      "io.modelcontextprotocol/protocolVersion": "2026-07-28"
    },
    "arguments": {
      "event_id": "example"
    },
    "name": "usgs_quake__earthquake_get_event"
  }
}
```

A successful response:

```json
{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "_meta": {
      "dev.mcpharbor.gateway/call": {
        "chargedMicroUsd": 100,
        "id": "<the id of this charge>"
      }
    },
    "content": [
      {
        "text": "<whatever the upstream tool returned>",
        "type": "text"
      }
    ],
    "resultType": "complete"
  }
}
```

This call costs $0.0001 (100 micro-USD). Reading this page and listing the tool cost nothing.
The `dev.mcpharbor.gateway/call` record in the result is the receipt for that charge. Each
POST is metered separately, so sending the same call again buys another one: see
[agent.txt](https://gateway.mcpharbor.dev/agent.txt), section 7, before retrying.

## Attribution

This provider requires the attribution below wherever you use results from its tools.
Reproduce it verbatim:

> Not legally required (public domain), but USGS asks that proper credit be given, e.g. 'Credit: U.S. Geological Survey, Department of the Interior/USGS'. Do not imply USGS endorsement.

## Tool definition

Exactly as `tools/list` returns it (free):

```json
{
  "_meta": {
    "dev.mcpharbor.gateway/pricing": {
      "currency": "USD",
      "pricePerCallMicroUsd": 100
    }
  },
  "annotations": {
    "idempotentHint": true,
    "openWorldHint": true,
    "readOnlyHint": true
  },
  "description": "Fetch detail for a specific earthquake by USGS event ID. Returns the same normalized event a search result carries, plus a projection of the analysis products only the single-event response holds: PAGER impact alert and report link, ShakeMap peak intensity and ground motion, DYFI felt-report totals, the moment-tensor focal mechanism, landslide and liquefaction alerts, origin quality (azimuthal gap, station count, location uncertainty), and finite-fault rupture dimensions. Products are omitted when USGS produced none — a small automatic event typically has no detail at all, while a large reviewed one has most of it. Event IDs appear in the \"id\" field of earthquake_get_feed and earthquake_search results. This tool is USGS-only — EMSC events have no per-event detail endpoint.",
  "inputSchema": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "additionalProperties": false,
    "properties": {
      "event_id": {
        "description": "USGS event ID, e.g. \"hv74966427\" or \"us6000sznj\". Found in the \"id\" field of earthquake_get_feed and earthquake_search results.",
        "type": "string"
      }
    },
    "required": [
      "event_id"
    ],
    "type": "object"
  },
  "name": "usgs_quake__earthquake_get_event",
  "outputSchema": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "additionalProperties": false,
    "anyOf": [
      {
        "not": {
          "required": [
            "error"
          ]
        },
        "required": [
          "event"
        ]
      },
      {
        "required": [
          "error"
        ]
      }
    ],
    "properties": {
      "detail": {
        "additionalProperties": false,
        "description": "Analysis products USGS attached to this event. Absent when the event carries none — that means no product was produced, not that impact was zero.",
        "properties": {
          "dyfi": {
            "additionalProperties": false,
            "description": "Felt-report summary. Absent when no DYFI product exists for the event.",
            "properties": {
              "map_url": {
                "description": "URL of the rendered DYFI intensity map image.",
                "type": "string"
              },
              "max_cdi": {
                "description": "Maximum Community Decimal Intensity derived from those reports (0–12 scale).",
                "type": "number"
              },
              "responses": {
                "description": "Number of \"Did You Feel It?\" reports the public submitted.",
                "type": "number"
              }
            },
            "type": "object"
          },
          "finite_fault": {
            "additionalProperties": false,
            "description": "Finite-fault rupture model. Produced only for large events.",
            "properties": {
              "model_url": {
                "description": "URL of the finite-fault rupture model file.",
                "type": "string"
              },
              "rupture_length_km": {
                "description": "Modeled rupture length along strike, in kilometers.",
                "type": "number"
              },
              "rupture_width_km": {
                "description": "Modeled rupture width down dip, in kilometers.",
                "type": "number"
              }
            },
            "type": "object"
          },
          "ground_failure": {
            "additionalProperties": false,
            "description": "Secondary-hazard alert levels. Absent when no ground-failure model was run.",
            "properties": {
              "landslide_alert": {
                "description": "Landslide hazard alert level — \"green\", \"yellow\", \"orange\", or \"red\".",
                "type": "string"
              },
              "liquefaction_alert": {
                "description": "Liquefaction hazard alert level — \"green\", \"yellow\", \"orange\", or \"red\".",
                "type": "string"
              }
            },
            "type": "object"
          },
          "losspager": {
            "additionalProperties": false,
            "description": "PAGER impact assessment. Estimated fatality and economic-loss brackets live in a separate content file and are not part of this response — fetch report_url for them.",
            "properties": {
              "alert_level": {
                "description": "PAGER impact alert level — \"green\", \"yellow\", \"orange\", or \"red\".",
                "type": "string"
              },
              "report_url": {
                "description": "URL of the PAGER one-page PDF summary of estimated impact.",
                "type": "string"
              }
            },
            "type": "object"
          },
          "moment_tensor": {
            "additionalProperties": false,
            "description": "Focal-mechanism solution. Absent for events with no moment-tensor inversion.",
            "properties": {
              "derived_depth_km": {
                "description": "Centroid depth in kilometers derived from the moment-tensor inversion.",
                "type": "number"
              },
              "nodal_plane_1": {
                "additionalProperties": false,
                "description": "First nodal plane of the focal mechanism. Either plane can be the true fault.",
                "properties": {
                  "dip": {
                    "description": "Fault plane dip in degrees from horizontal (0–90).",
                    "type": "number"
                  },
                  "rake": {
                    "description": "Slip direction in degrees (-180 to 180). Near 90 is reverse faulting, near -90 normal, near 0 or 180 strike-slip.",
                    "type": "number"
                  },
                  "strike": {
                    "description": "Fault plane strike in degrees clockwise from north (0–360).",
                    "type": "number"
                  }
                },
                "required": [
                  "strike",
                  "dip",
                  "rake"
                ],
                "type": "object"
              },
              "nodal_plane_2": {
                "additionalProperties": false,
                "description": "Second nodal plane — the auxiliary solution, indistinguishable from the first on seismic data alone.",
                "properties": {
                  "dip": {
                    "description": "Fault plane dip in degrees from horizontal (0–90).",
                    "type": "number"
                  },
                  "rake": {
                    "description": "Slip direction in degrees (-180 to 180). Near 90 is reverse faulting, near -90 normal, near 0 or 180 strike-slip.",
                    "type": "number"
                  },
                  "strike": {
                    "description": "Fault plane strike in degrees clockwise from north (0–360).",
                    "type": "number"
                  }
                },
                "required": [
                  "strike",
                  "dip",
                  "rake"
                ],
                "type": "object"
              },
              "scalar_moment_nm": {
                "description": "Scalar seismic moment in newton-metres — the physical size of the rupture.",
                "type": "number"
              }
            },
            "type": "object"
          },
          "origin": {
            "additionalProperties": false,
            "description": "Location-quality metrics for the preferred origin.",
            "properties": {
              "azimuthal_gap_deg": {
                "description": "Largest azimuthal gap between stations, in degrees. Gaps above ~180 make the location poorly constrained.",
                "type": "number"
              },
              "depth_error_km": {
                "description": "Depth uncertainty in kilometers.",
                "type": "number"
              },
              "horizontal_error_km": {
                "description": "Horizontal location uncertainty in kilometers.",
                "type": "number"
              },
              "num_stations_used": {
                "description": "Number of seismic stations used in the location solution.",
                "type": "number"
              },
              "review_status": {
                "description": "Review state of the origin solution as the contributing network published it.",
                "type": "string"
              }
            },
            "type": "object"
          },
          "shakemap": {
            "additionalProperties": false,
            "description": "ShakeMap modeled ground-motion summary. Absent when no ShakeMap was produced.",
            "properties": {
              "intensity_map_url": {
                "description": "URL of the rendered ShakeMap intensity map image.",
                "type": "string"
              },
              "max_mmi": {
                "description": "Maximum modeled shaking intensity across the ShakeMap grid (Modified Mercalli).",
                "type": "number"
              },
              "max_pga": {
                "description": "Maximum modeled peak ground acceleration, in g — a fraction of standard gravity, as USGS ShakeMap publishes it (0.4 is four tenths of g).",
                "type": "number"
              },
              "max_pgv": {
                "description": "Maximum modeled peak ground velocity, in cm/s.",
                "type": "number"
              }
            },
            "type": "object"
          }
        },
        "type": "object"
      },
      "error": {
        "additionalProperties": {},
        "description": "Present when the call failed. Absent on success.",
        "properties": {
          "code": {
            "description": "JSON-RPC error code for this failure.",
            "maximum": 9007199254740991,
            "minimum": -9007199254740991,
            "type": "integer"
          },
          "data": {
            "additionalProperties": {},
            "properties": {
              "reason": {
                "description": "Machine-readable failure mode. Declared by this tool: `not_found`: No event matches the provided event_id. `source_unavailable`: The USGS event API returns a 5xx, serves HTML, or is unreachable. `source_timeout`: The USGS event API did not answer before the request deadline. Other values are possible when a failure originates below the handler.",
                "examples": [
                  "not_found",
                  "source_unavailable",
                  "source_timeout"
                ],
                "type": "string"
              },
              "recovery": {
                "additionalProperties": {},
                "description": "Actionable next step for the caller.",
                "properties": {
                  "hint": {
                    "type": "string"
                  }
                },
                "required": [
                  "hint"
                ],
                "type": "object"
              },
              "retryable": {
                "description": "Whether retrying may succeed.",
                "type": "boolean"
              }
            },
            "type": "object"
          },
          "message": {
            "description": "Human-readable description of what went wrong.",
            "type": "string"
          }
        },
        "required": [
          "code",
          "message"
        ],
        "type": "object"
      },
      "event": {
        "additionalProperties": false,
        "description": "Full earthquake event detail.",
        "properties": {
          "alert": {
            "anyOf": [
              {
                "enum": [
                  "green",
                  "yellow",
                  "orange",
                  "red"
                ],
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "description": "PAGER estimated impact alert level. Null when USGS ran no PAGER assessment, and always null for EMSC, which publishes no such field."
          },
          "auth": {
            "description": "Code of the agency or network the source names as authoritative for this solution, e.g. \"NEIC\", \"BMKG\", \"NDI\" from EMSC or \"us\", \"ci\", \"ak\" from USGS. Absent when the source reports none.",
            "type": "string"
          },
          "cdi": {
            "description": "Maximum reported intensity (Community Decimal Intensity, 0–12 scale), derived from DYFI responses. Null when USGS computed no DYFI intensity, and always null for EMSC, which publishes no such field.",
            "type": [
              "number",
              "null"
            ]
          },
          "depth_km": {
            "description": "Hypocenter depth in kilometers. Shallow (<70 km), intermediate (70–300 km), or deep (>300 km). Null for historical events where depth was not measured.",
            "type": [
              "number",
              "null"
            ]
          },
          "detail_url": {
            "description": "URL to fetch the full GeoJSON detail record. Present in USGS list responses.",
            "type": "string"
          },
          "event_certainty": {
            "description": "How certain the source is of event_type: \"known\" (asserted), \"suspected\", \"unknown\", or \"unreported\". EMSC publishes this as the first character of its event-type code — a suspected explosion is not a confirmed one, and this is the only field that says so. Absent for USGS, which publishes no certainty axis, and absent for an EMSC code outside the published nomenclature.",
            "enum": [
              "known",
              "suspected",
              "unknown",
              "unreported"
            ],
            "type": "string"
          },
          "event_type": {
            "description": "What kind of event this is, in one vocabulary whichever source served it — the QuakeML type names USGS publishes (\"earthquake\", \"quarry blast\", \"explosion\", \"ice quake\"). EMSC's two-character code is decoded to the same names, so the same event carries the same value from either source; how sure the source is rides on event_certainty instead. A code outside the published nomenclature is forwarded verbatim rather than guessed at. Not every record in either catalog is a tectonic earthquake. Absent when the source publishes no classification.",
            "type": "string"
          },
          "event_url": {
            "description": "USGS event page URL. Present for USGS events only.",
            "type": "string"
          },
          "felt": {
            "description": "Number of DYFI (Did You Feel It?) responses. Null when USGS has received no reports for the event, and always null for EMSC, which publishes no DYFI field — a null is not evidence the event went unfelt.",
            "type": [
              "number",
              "null"
            ]
          },
          "id": {
            "description": "USGS or EMSC event identifier.",
            "type": "string"
          },
          "latitude": {
            "description": "Epicenter latitude in decimal degrees.",
            "type": "number"
          },
          "longitude": {
            "description": "Epicenter longitude in decimal degrees.",
            "type": "number"
          },
          "magnitude": {
            "description": "Preferred magnitude value. Null when no magnitude was computed for the event (the title renders it as \"M ?\").",
            "type": [
              "number",
              "null"
            ]
          },
          "magnitude_type": {
            "description": "Magnitude type (ml, mww, mw, mb, etc.).",
            "type": "string"
          },
          "mmi": {
            "description": "Maximum ShakeMap instrumental intensity (Modified Mercalli, 0–12 scale). Null when USGS produced no ShakeMap for the event, and always null for EMSC, which publishes no such field.",
            "type": [
              "number",
              "null"
            ]
          },
          "place": {
            "description": "Nearest named location.",
            "type": "string"
          },
          "significance": {
            "description": "USGS significance score (0–2000+). Combines magnitude, felt reports, PAGER. Null when USGS computed no score, and always null for EMSC, which publishes no such field.",
            "type": [
              "number",
              "null"
            ]
          },
          "source_catalog": {
            "description": "Upstream catalog this solution came from, e.g. \"EMSC-RTS\" (EMSC real-time seismicity, revised as analysis continues). Absent for USGS, which publishes no catalog identifier on event records.",
            "type": "string"
          },
          "status": {
            "anyOf": [
              {
                "enum": [
                  "automatic",
                  "reviewed",
                  "deleted"
                ],
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "description": "Human-review state: \"automatic\" (posted by automatic processing, not yet verified by a person), \"reviewed\" (examined by an analyst), or \"deleted\". Null when the source publishes no review status — EMSC does not, so treat an EMSC solution as unverified and subject to revision rather than final."
          },
          "time": {
            "description": "ISO 8601 UTC origin time.",
            "type": "string"
          },
          "title": {
            "description": "Human-readable event summary, e.g. \"M 6.0 - 13 km S of Honaunau-Napoopoo, Hawaii\".",
            "type": "string"
          },
          "tsunami": {
            "description": "USGS tsunami flag: 1 for large events in oceanic regions, 0 otherwise. It is not a warning — USGS states the flag does not indicate whether a tsunami did or will exist; check NOAA (tsunami.gov) for actual alert status. Null when the source publishes no such flag, as EMSC does not.",
            "type": [
              "number",
              "null"
            ]
          },
          "updated": {
            "description": "ISO 8601 UTC time this record was last updated.",
            "type": "string"
          }
        },
        "required": [
          "id",
          "title",
          "magnitude",
          "magnitude_type",
          "time",
          "updated",
          "place",
          "latitude",
          "longitude",
          "depth_km",
          "felt",
          "cdi",
          "mmi",
          "alert",
          "tsunami",
          "significance",
          "status"
        ],
        "type": "object"
      }
    },
    "type": "object"
  },
  "title": "Get Earthquake Event Detail"
}
```