{
  "webextensions": {
    "api": {
      "topSites": {
        "MostVisitedURL": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/topSites/MostVisitedURL",
            "support": {
              "chrome": {
                "version_added": true
              },
              "edge": {
                "version_added": "79"
              },
              "firefox": {
                "version_added": "52"
              },
              "firefox_android": {
                "version_added": "52"
              },
              "opera": {
                "version_added": true
              },
              "safari": {
                "version_added": false
              }
            }
          },
          "favicon": {
            "__compat": {
              "support": {
                "chrome": {
                  "version_added": false
                },
                "edge": {
                  "version_added": false
                },
                "firefox": {
                  "version_added": "63"
                },
                "firefox_android": {
                  "version_added": "63"
                },
                "opera": {
                  "version_added": false
                },
                "safari": {
                  "version_added": false
                }
              }
            }
          }
        },
        "get": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/topSites/get",
            "support": {
              "chrome": {
                "version_added": true
              },
              "edge": {
                "version_added": "79"
              },
              "firefox": [
                {
                  "notes": "A user may disable the browser's \"Top Sites\" feature by toggling the \"browser.newtabpage.activity-stream.feeds.system.topsites\" preference. In this case, <code>topSites.get()</code> will always return a list of the most-visited sites, regardless of the value of the <code>newtab</code> parameter.",
                  "version_added": "78"
                },
                {
                  "version_added": "52"
                }
              ],
              "firefox_android": {
                "version_added": "52"
              },
              "opera": {
                "version_added": true
              },
              "safari": {
                "version_added": false
              }
            }
          },
          "options": {
            "__compat": {
              "support": {
                "chrome": {
                  "version_added": false
                },
                "edge": {
                  "version_added": false
                },
                "firefox": {
                  "version_added": "63"
                },
                "firefox_android": {
                  "version_added": "63"
                },
                "opera": {
                  "version_added": false
                },
                "safari": {
                  "version_added": false
                }
              }
            },
            "includeBlocked": {
              "__compat": {
                "support": {
                  "chrome": {
                    "version_added": false
                  },
                  "edge": {
                    "version_added": false
                  },
                  "firefox": {
                    "version_added": "63"
                  },
                  "firefox_android": {
                    "version_added": "63"
                  },
                  "opera": {
                    "version_added": false
                  },
                  "safari": {
                    "version_added": false
                  }
                }
              }
            },
            "includeFavicon": {
              "__compat": {
                "support": {
                  "chrome": {
                    "version_added": false
                  },
                  "edge": {
                    "version_added": false
                  },
                  "firefox": {
                    "version_added": "63"
                  },
                  "firefox_android": {
                    "version_added": "63"
                  },
                  "opera": {
                    "version_added": false
                  },
                  "safari": {
                    "version_added": false
                  }
                }
              }
            },
            "includePinned": {
              "__compat": {
                "support": {
                  "chrome": {
                    "version_added": false
                  },
                  "edge": {
                    "version_added": false
                  },
                  "firefox": {
                    "version_added": "69"
                  },
                  "firefox_android": {
                    "version_added": false
                  },
                  "opera": {
                    "version_added": false
                  },
                  "safari": {
                    "version_added": false
                  }
                }
              }
            },
            "includeSearchShortcuts": {
              "__compat": {
                "support": {
                  "chrome": {
                    "version_added": false
                  },
                  "edge": {
                    "version_added": false
                  },
                  "firefox": {
                    "version_added": "69"
                  },
                  "firefox_android": {
                    "version_added": false
                  },
                  "opera": {
                    "version_added": false
                  },
                  "safari": {
                    "version_added": false
                  }
                }
              }
            },
            "limit": {
              "__compat": {
                "support": {
                  "chrome": {
                    "version_added": false
                  },
                  "edge": {
                    "version_added": false
                  },
                  "firefox": {
                    "version_added": "63"
                  },
                  "firefox_android": {
                    "version_added": "63"
                  },
                  "opera": {
                    "version_added": false
                  },
                  "safari": {
                    "version_added": false
                  }
                }
              }
            },
            "newtab": {
              "__compat": {
                "support": {
                  "chrome": {
                    "version_added": false
                  },
                  "edge": {
                    "version_added": false
                  },
                  "firefox": {
                    "version_added": "63"
                  },
                  "firefox_android": {
                    "version_added": "63"
                  },
                  "opera": {
                    "version_added": false
                  },
                  "safari": {
                    "version_added": false
                  }
                }
              }
            },
            "onePerDomain": {
              "__compat": {
                "support": {
                  "chrome": {
                    "version_added": false
                  },
                  "edge": {
                    "version_added": false
                  },
                  "firefox": {
                    "version_added": "63"
                  },
                  "firefox_android": {
                    "version_added": "63"
                  },
                  "opera": {
                    "version_added": false
                  },
                  "safari": {
                    "version_added": false
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}