Introspection

Datasette includes some pages and JSON API endpoints for introspecting the current instance. These can be used to understand some of the internals of Datasette and to see how a particular instance has been configured.

Each of these pages can be viewed in your browser. Add .json to the URL to get back the contents as JSON.

/-/metadata

Shows the contents of the metadata.json file that was passed to datasette serve, if any. Metadata example:

{
    "license": "CC Attribution 4.0 License",
    "license_url": "http://creativecommons.org/licenses/by/4.0/",
    "source": "fivethirtyeight/data on GitHub",
    "source_url": "https://github.com/fivethirtyeight/data",
    "title": "Five Thirty Eight",
    "databases": {...}
}

/-/versions

Shows the version of Datasette, Python and SQLite. Versions example:

{
    "datasette": {
        "version": "0.21"
    },
    "python": {
        "full": "3.6.5 (default, May  5 2018, 03:07:21) \n[GCC 6.3.0 20170516]",
        "version": "3.6.5"
    },
    "sqlite": {
        "extensions": {
            "json1": null
        },
        "fts_versions": [
            "FTS5",
            "FTS4",
            "FTS3"
        ],
        "compile_options": [
            "COMPILER=gcc-6.3.0 20170516",
            "ENABLE_FTS3",
            "ENABLE_FTS4",
            "ENABLE_FTS5",
            "ENABLE_JSON1",
            "ENABLE_RTREE",
            "THREADSAFE=1"
        ],
        "version": "3.16.2"
    }
}

/-/plugins

Shows a list of currently installed plugins and their versions. Plugins example:

[
    {
        "name": "datasette_cluster_map",
        "static": true,
        "templates": false,
        "version": "0.4"
    }
]

/-/config

Shows the Configuration options for this instance of Datasette. Config example:

{
    "default_facet_size": 30,
    "default_page_size": 100,
    "facet_suggest_time_limit_ms": 50,
    "facet_time_limit_ms": 1000,
    "max_returned_rows": 1000,
    "sql_time_limit_ms": 1000
}

/-/databases

Shows currently attached databases. Databases example:

[
    {
        "hash": null,
        "is_memory": false,
        "is_mutable": true,
        "name": "fixtures",
        "path": "fixtures.db",
        "size": 225280
    }
]

/-/threads

Shows details of threads. Threads example:

{
    "num_threads": 2,
    "threads": [
        {
            "daemon": false,
            "ident": 4759197120,
            "name": "MainThread"
        },
        {
            "daemon": true,
            "ident": 123145319682048,
            "name": "Thread-1"
        },
    ]
}