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    MCP Tools Reference: firestore.googleapis.com

    Tool: add_document

    Create a document from a Firestore database.

    The following sample demonstrate how to use curl to invoke the add_document MCP tool.

    Curl Request 
      
curl  
--location  
 'https://firestore.googleapis.com/mcp' 
  
 \ 
--header  
 'content-type: application/json' 
  
 \ 
--header  
 'accept: application/json, text/event-stream' 
  
 \ 
--data  
 '{ 
 "method": "tools/call", 
 "params": { 
 "name": "add_document", 
 "arguments": { 
 // provide these details according to the tool' 
s  
MCP  
specification  
 } 
  
 } 
,  
 "jsonrpc" 
:  
 "2.0" 
,  
 "id" 
:  
 1 
 } 
 '

    Input Schema

    The request for Firestore.CreateDocument .

    CreateDocumentRequest

    JSON representation 
     { 
 "parent" 
 : 
 string 
 , 
 "collectionId" 
 : 
 string 
 , 
 "documentId" 
 : 
 string 
 , 
 "document" 
 : 
 { 
 object (  Document 
 
) 
 } 
 , 
 "mask" 
 : 
 { 
 object (  DocumentMask 
 
) 
 } 
 }
    Fields
    parent

    string

    Required. The parent resource. For example: projects/{project_id}/databases/{database_id}/documents or projects/{project_id}/databases/{database_id}/documents/chatrooms/{chatroom_id}

    collectionId

    string

    Required. The collection ID, relative to parent , to list. For example: chatrooms .
    documentId

    string

    The client-assigned document ID to use for this document.

    Optional. If not specified, an ID will be assigned by the service.
    document

    object ( Document )

    Required. The document to create. name must not be set.
    mask

    object ( DocumentMask )

    The fields to return. If not set, returns all fields.

    If the document has a field that is not present in this mask, that field will not be returned in the response.

    Document

    JSON representation 
     { 
 "name" 
 : 
 string 
 , 
 "fields" 
 : 
 { 
 string 
 : 
 { 
 object (  Value 
 
) 
 } 
 , 
 ... 
 } 
 , 
 "createTime" 
 : 
 string 
 , 
 "updateTime" 
 : 
 string 
 }
    Fields
    name

    string

    The resource name of the document, for example projects/{project_id}/databases/{database_id}/documents/{document_path} .
    fields

    map (key: string, value: object ( Value ))

    The document's fields.

    The map keys represent field names.

    Field names matching the regular expression __.*__ are reserved. Reserved field names are forbidden except in certain documented contexts. The field names, represented as UTF-8, must not exceed 1,500 bytes and cannot be empty.

    Field paths may be used in other contexts to refer to structured fields defined here. For map_value , the field path is represented by a dot-delimited ( . ) string of segments. Each segment is either a simple field name (defined below) or a quoted field name. For example, the structured field "foo" : { map_value: { "x&y" : { string_value: "hello" }}} would be represented by the field path foo.`x&y` .

    A simple field name contains only characters a to z , A to Z , 0 to 9 , or _ , and must not start with 0 to 9 . For example, foo_bar_17 .

    A quoted field name starts and ends with ` and may contain any character. Some characters, including ` , must be escaped using a \ . For example, `x&y` represents x&y and `bak\`tik` represents bak`tik .

    An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" } .
    createTime

    string ( Timestamp format)

    Output only. The time at which the document was created.

    This value increases monotonically when a document is deleted then recreated. It can also be compared to values from other documents and the read_time of a query.

    Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .
    updateTime

    string ( Timestamp format)

    Output only. The time at which the document was last changed.

    This value is initially set to the create_time then increases monotonically with each change to the document. It can also be compared to values from other documents and the read_time of a query.

    Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .

    FieldsEntry

    JSON representation 
     { 
 "key" 
 : 
 string 
 , 
 "value" 
 : 
 { 
 object (  Value 
 
) 
 } 
 }
    Fields
    key

    string

    value

    object ( Value )

    Value

    JSON representation 
     { 
 // Union field value_type 
can be only one of the following: 
 "nullValue" 
 : 
 null 
 , 
 "booleanValue" 
 : 
 boolean 
 , 
 "integerValue" 
 : 
 string 
 , 
 "doubleValue" 
 : 
 number 
 , 
 "timestampValue" 
 : 
 string 
 , 
 "stringValue" 
 : 
 string 
 , 
 "bytesValue" 
 : 
 string 
 , 
 "referenceValue" 
 : 
 string 
 , 
 "geoPointValue" 
 : 
 { 
 object (  LatLng 
 
) 
 } 
 , 
 "arrayValue" 
 : 
 { 
 object (  ArrayValue 
 
) 
 } 
 , 
 "mapValue" 
 : 
 { 
 object (  MapValue 
 
) 
 } 
 , 
 "fieldReferenceValue" 
 : 
 string 
 , 
 "variableReferenceValue" 
 : 
 string 
 , 
 "functionValue" 
 : 
 { 
 object (  Function 
 
) 
 } 
 , 
 "pipelineValue" 
 : 
 { 
 object (  Pipeline 
 
) 
 } 
 // End of list of possible types for union field value_type 
. 
 }
    Fields
    Union field value_type . Must have a value set. value_type can be only one of the following:
    nullValue

    null

    A null value.

    booleanValue

    boolean

    A boolean value.

    integerValue

    string ( int64 format)

    An integer value.

    doubleValue

    number

    A double value.

    timestampValue

    string ( Timestamp format)

    A timestamp value.

    Precise only to microseconds. When stored, any additional precision is rounded down.

    Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .

    stringValue

    string

    A string value.

    The string, represented as UTF-8, must not exceed 1 MiB - 89 bytes. Only the first 1,500 bytes of the UTF-8 representation are considered by queries.

    bytesValue

    string ( bytes format)

    A bytes value.

    Must not exceed 1 MiB - 89 bytes. Only the first 1,500 bytes are considered by queries.

    A base64-encoded string.

    referenceValue

    string

    A reference to a document. For example: projects/{project_id}/databases/{database_id}/documents/{document_path} .

    geoPointValue

    object ( LatLng )

    A geo point value representing a point on the surface of Earth.

    arrayValue

    object ( ArrayValue )

    An array value.

    Cannot directly contain another array value, though can contain a map which contains another array.

    mapValue

    object ( MapValue )

    A map value.

    fieldReferenceValue

    string

    Value which references a field.

    This is considered relative (vs absolute) since it only refers to a field and not a field within a particular document.

    Requires:

    • Must follow [field reference][FieldReference.field_path] limitations.

    • Not allowed to be used when writing documents.

    variableReferenceValue

    string

    Pointer to a variable defined elsewhere in a pipeline.

    Unlike field_reference_value which references a field within a document, this refers to a variable, defined in a separate namespace than the fields of a document.

    functionValue

    object ( Function )

    A value that represents an unevaluated expression.

    Requires:

    • Not allowed to be used when writing documents.
    pipelineValue

    object ( Pipeline )

    A value that represents an unevaluated pipeline.

    Requires:

    • Not allowed to be used when writing documents.

    Timestamp

    JSON representation 
     { 
 "seconds" 
 : 
 string 
 , 
 "nanos" 
 : 
 integer 
 }
    Fields
    seconds

    string ( int64 format)

    Represents seconds of UTC time since Unix epoch 1970-01-01T00:00:00Z. Must be between -62135596800 and 253402300799 inclusive (which corresponds to 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z).
    nanos

    integer

    Non-negative fractions of a second at nanosecond resolution. This field is the nanosecond portion of the duration, not an alternative to seconds. Negative second values with fractions must still have non-negative nanos values that count forward in time. Must be between 0 and 999,999,999 inclusive.

    LatLng

    JSON representation 
     { 
 "latitude" 
 : 
 number 
 , 
 "longitude" 
 : 
 number 
 }
    Fields
    latitude

    number

    The latitude in degrees. It must be in the range [-90.0, +90.0].
    longitude

    number

    The longitude in degrees. It must be in the range [-180.0, +180.0].

    ArrayValue

    JSON representation 
     { 
 "values" 
 : 
 [ 
 { 
 object (  Value 
 
) 
 } 
 ] 
 }
    Fields
    values[]

    object ( Value )

    Values in the array.

    MapValue

    JSON representation 
     { 
 "fields" 
 : 
 { 
 string 
 : 
 { 
 object (  Value 
 
) 
 } 
 , 
 ... 
 } 
 }
    Fields
    fields

    map (key: string, value: object ( Value ))

    The map's fields.

    The map keys represent field names. Field names matching the regular expression __.*__ are reserved. Reserved field names are forbidden except in certain documented contexts. The map keys, represented as UTF-8, must not exceed 1,500 bytes and cannot be empty.

    An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" } .

    FieldsEntry

    JSON representation 
     { 
 "key" 
 : 
 string 
 , 
 "value" 
 : 
 { 
 object (  Value 
 
) 
 } 
 }
    Fields
    key

    string

    value

    object ( Value )

    Function

    JSON representation 
     { 
 "name" 
 : 
 string 
 , 
 "args" 
 : 
 [ 
 { 
 object (  Value 
 
) 
 } 
 ] 
 , 
 "options" 
 : 
 { 
 string 
 : 
 { 
 object (  Value 
 
) 
 } 
 , 
 ... 
 } 
 }
    Fields
    name

    string

    Required. The name of the function to evaluate.

    Requires:

    • must be in snake case (lower case with underscore separator).
    args[]

    object ( Value )

    Optional. Ordered list of arguments the given function expects.

    options

    map (key: string, value: object ( Value ))

    Optional. Optional named arguments that certain functions may support.

    An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" } .

    OptionsEntry

    JSON representation 
     { 
 "key" 
 : 
 string 
 , 
 "value" 
 : 
 { 
 object (  Value 
 
) 
 } 
 }
    Fields
    key

    string

    value

    object ( Value )

    Pipeline

    JSON representation 
     { 
 "stages" 
 : 
 [ 
 { 
 object (  Stage 
 
) 
 } 
 ] 
 }
    Fields
    stages[]

    object ( Stage )

    Required. Ordered list of stages to evaluate.

    Stage

    JSON representation 
     { 
 "name" 
 : 
 string 
 , 
 "args" 
 : 
 [ 
 { 
 object (  Value 
 
) 
 } 
 ] 
 , 
 "options" 
 : 
 { 
 string 
 : 
 { 
 object (  Value 
 
) 
 } 
 , 
 ... 
 } 
 }
    Fields
    name

    string

    Required. The name of the stage to evaluate.

    Requires:

    • must be in snake case (lower case with underscore separator).
    args[]

    object ( Value )

    Optional. Ordered list of arguments the given stage expects.

    options

    map (key: string, value: object ( Value ))

    Optional. Optional named arguments that certain functions may support.

    An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" } .

    OptionsEntry

    JSON representation 
     { 
 "key" 
 : 
 string 
 , 
 "value" 
 : 
 { 
 object (  Value 
 
) 
 } 
 }
    Fields
    key

    string

    value

    object ( Value )

    DocumentMask

    JSON representation 
     { 
 "fieldPaths" 
 : 
 [ 
 string 
 ] 
 }
    Fields
    fieldPaths[]

    string

    The list of field paths in the mask. See Document.fields for a field path syntax reference.

    Output Schema

    A Firestore document.

    Must not exceed 1 MiB - 4 bytes.

    Document

    JSON representation 
     { 
 "name" 
 : 
 string 
 , 
 "fields" 
 : 
 { 
 string 
 : 
 { 
 object (  Value 
 
) 
 } 
 , 
 ... 
 } 
 , 
 "createTime" 
 : 
 string 
 , 
 "updateTime" 
 : 
 string 
 }
    Fields
    name

    string

    The resource name of the document, for example projects/{project_id}/databases/{database_id}/documents/{document_path} .
    fields

    map (key: string, value: object ( Value ))

    The document's fields.

    The map keys represent field names.

    Field names matching the regular expression __.*__ are reserved. Reserved field names are forbidden except in certain documented contexts. The field names, represented as UTF-8, must not exceed 1,500 bytes and cannot be empty.

    Field paths may be used in other contexts to refer to structured fields defined here. For map_value , the field path is represented by a dot-delimited ( . ) string of segments. Each segment is either a simple field name (defined below) or a quoted field name. For example, the structured field "foo" : { map_value: { "x&y" : { string_value: "hello" }}} would be represented by the field path foo.`x&y` .

    A simple field name contains only characters a to z , A to Z , 0 to 9 , or _ , and must not start with 0 to 9 . For example, foo_bar_17 .

    A quoted field name starts and ends with ` and may contain any character. Some characters, including ` , must be escaped using a \ . For example, `x&y` represents x&y and `bak\`tik` represents bak`tik .

    An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" } .
    createTime

    string ( Timestamp format)

    Output only. The time at which the document was created.

    This value increases monotonically when a document is deleted then recreated. It can also be compared to values from other documents and the read_time of a query.

    Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .
    updateTime

    string ( Timestamp format)

    Output only. The time at which the document was last changed.

    This value is initially set to the create_time then increases monotonically with each change to the document. It can also be compared to values from other documents and the read_time of a query.

    Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .

    FieldsEntry

    JSON representation 
     { 
 "key" 
 : 
 string 
 , 
 "value" 
 : 
 { 
 object (  Value 
 
) 
 } 
 }
    Fields
    key

    string

    value

    object ( Value )

    Value

    JSON representation 
     { 
 // Union field value_type 
can be only one of the following: 
 "nullValue" 
 : 
 null 
 , 
 "booleanValue" 
 : 
 boolean 
 , 
 "integerValue" 
 : 
 string 
 , 
 "doubleValue" 
 : 
 number 
 , 
 "timestampValue" 
 : 
 string 
 , 
 "stringValue" 
 : 
 string 
 , 
 "bytesValue" 
 : 
 string 
 , 
 "referenceValue" 
 : 
 string 
 , 
 "geoPointValue" 
 : 
 { 
 object (  LatLng 
 
) 
 } 
 , 
 "arrayValue" 
 : 
 { 
 object (  ArrayValue 
 
) 
 } 
 , 
 "mapValue" 
 : 
 { 
 object (  MapValue 
 
) 
 } 
 , 
 "fieldReferenceValue" 
 : 
 string 
 , 
 "variableReferenceValue" 
 : 
 string 
 , 
 "functionValue" 
 : 
 { 
 object (  Function 
 
) 
 } 
 , 
 "pipelineValue" 
 : 
 { 
 object (  Pipeline 
 
) 
 } 
 // End of list of possible types for union field value_type 
. 
 }
    Fields
    Union field value_type . Must have a value set. value_type can be only one of the following:
    nullValue

    null

    A null value.

    booleanValue

    boolean

    A boolean value.

    integerValue

    string ( int64 format)

    An integer value.

    doubleValue

    number

    A double value.

    timestampValue

    string ( Timestamp format)

    A timestamp value.

    Precise only to microseconds. When stored, any additional precision is rounded down.

    Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .

    stringValue

    string

    A string value.

    The string, represented as UTF-8, must not exceed 1 MiB - 89 bytes. Only the first 1,500 bytes of the UTF-8 representation are considered by queries.

    bytesValue

    string ( bytes format)

    A bytes value.

    Must not exceed 1 MiB - 89 bytes. Only the first 1,500 bytes are considered by queries.

    A base64-encoded string.

    referenceValue

    string

    A reference to a document. For example: projects/{project_id}/databases/{database_id}/documents/{document_path} .

    geoPointValue

    object ( LatLng )

    A geo point value representing a point on the surface of Earth.

    arrayValue

    object ( ArrayValue )

    An array value.

    Cannot directly contain another array value, though can contain a map which contains another array.

    mapValue

    object ( MapValue )

    A map value.

    fieldReferenceValue

    string

    Value which references a field.

    This is considered relative (vs absolute) since it only refers to a field and not a field within a particular document.

    Requires:

    • Must follow [field reference][FieldReference.field_path] limitations.

    • Not allowed to be used when writing documents.

    variableReferenceValue

    string

    Pointer to a variable defined elsewhere in a pipeline.

    Unlike field_reference_value which references a field within a document, this refers to a variable, defined in a separate namespace than the fields of a document.

    functionValue

    object ( Function )

    A value that represents an unevaluated expression.

    Requires:

    • Not allowed to be used when writing documents.
    pipelineValue

    object ( Pipeline )

    A value that represents an unevaluated pipeline.

    Requires:

    • Not allowed to be used when writing documents.

    Timestamp

    JSON representation 
     { 
 "seconds" 
 : 
 string 
 , 
 "nanos" 
 : 
 integer 
 }
    Fields
    seconds

    string ( int64 format)

    Represents seconds of UTC time since Unix epoch 1970-01-01T00:00:00Z. Must be between -62135596800 and 253402300799 inclusive (which corresponds to 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z).
    nanos

    integer

    Non-negative fractions of a second at nanosecond resolution. This field is the nanosecond portion of the duration, not an alternative to seconds. Negative second values with fractions must still have non-negative nanos values that count forward in time. Must be between 0 and 999,999,999 inclusive.

    LatLng

    JSON representation 
     { 
 "latitude" 
 : 
 number 
 , 
 "longitude" 
 : 
 number 
 }
    Fields
    latitude

    number

    The latitude in degrees. It must be in the range [-90.0, +90.0].
    longitude

    number

    The longitude in degrees. It must be in the range [-180.0, +180.0].

    ArrayValue

    JSON representation 
     { 
 "values" 
 : 
 [ 
 { 
 object (  Value 
 
) 
 } 
 ] 
 }
    Fields
    values[]

    object ( Value )

    Values in the array.

    MapValue

    JSON representation 
     { 
 "fields" 
 : 
 { 
 string 
 : 
 { 
 object (  Value 
 
) 
 } 
 , 
 ... 
 } 
 }
    Fields
    fields

    map (key: string, value: object ( Value ))

    The map's fields.

    The map keys represent field names. Field names matching the regular expression __.*__ are reserved. Reserved field names are forbidden except in certain documented contexts. The map keys, represented as UTF-8, must not exceed 1,500 bytes and cannot be empty.

    An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" } .

    FieldsEntry

    JSON representation 
     { 
 "key" 
 : 
 string 
 , 
 "value" 
 : 
 { 
 object (  Value 
 
) 
 } 
 }
    Fields
    key

    string

    value

    object ( Value )

    Function

    JSON representation 
     { 
 "name" 
 : 
 string 
 , 
 "args" 
 : 
 [ 
 { 
 object (  Value 
 
) 
 } 
 ] 
 , 
 "options" 
 : 
 { 
 string 
 : 
 { 
 object (  Value 
 
) 
 } 
 , 
 ... 
 } 
 }
    Fields
    name

    string

    Required. The name of the function to evaluate.

    Requires:

    • must be in snake case (lower case with underscore separator).
    args[]

    object ( Value )

    Optional. Ordered list of arguments the given function expects.

    options

    map (key: string, value: object ( Value ))

    Optional. Optional named arguments that certain functions may support.

    An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" } .

    OptionsEntry

    JSON representation 
     { 
 "key" 
 : 
 string 
 , 
 "value" 
 : 
 { 
 object (  Value 
 
) 
 } 
 }
    Fields
    key

    string

    value

    object ( Value )

    Pipeline

    JSON representation 
     { 
 "stages" 
 : 
 [ 
 { 
 object (  Stage 
 
) 
 } 
 ] 
 }
    Fields
    stages[]

    object ( Stage )

    Required. Ordered list of stages to evaluate.

    Stage

    JSON representation 
     { 
 "name" 
 : 
 string 
 , 
 "args" 
 : 
 [ 
 { 
 object (  Value 
 
) 
 } 
 ] 
 , 
 "options" 
 : 
 { 
 string 
 : 
 { 
 object (  Value 
 
) 
 } 
 , 
 ... 
 } 
 }
    Fields
    name

    string

    Required. The name of the stage to evaluate.

    Requires:

    • must be in snake case (lower case with underscore separator).
    args[]

    object ( Value )

    Optional. Ordered list of arguments the given stage expects.

    options

    map (key: string, value: object ( Value ))

    Optional. Optional named arguments that certain functions may support.

    An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" } .

    OptionsEntry

    JSON representation 
     { 
 "key" 
 : 
 string 
 , 
 "value" 
 : 
 { 
 object (  Value 
 
) 
 } 
 }
    Fields
    key

    string

    value

    object ( Value )

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