## Template Template is a YAML input file which defines all the requests and other metadata for a template.
id string
ID is the unique id for the template. #### Good IDs A good ID uniquely identifies what the requests in the template are doing. Let's say you have a template that identifies a git-config file on the webservers, a good name would be `git-config-exposure`. Another example name is `azure-apps-nxdomain-takeover`. Examples: ```yaml # ID Example id: CVE-2021-19520 ```

info model.Info
Info contains metadata information about the template. Examples: ```yaml info: name: Argument Injection in Ruby Dragonfly author: 0xspara tags: cve,cve2021,rce,ruby reference: https://zxsecurity.co.nz/research/argunment-injection-ruby-dragonfly/ severity: high ```

requests []http.Request
Requests contains the http request to make in the template. WARNING: 'requests' will be deprecated and will be removed in a future release. Please use 'http' instead. Examples: ```yaml requests: matchers: - type: word words: - '[core]' - type: dsl condition: and dsl: - '!contains(tolower(body), ''
http []http.Request
description: | HTTP contains the http request to make in the template. examples: - value: exampleNormalHTTPRequest RequestsWithHTTP is placeholder(internal) only, and should not be used instead use RequestsHTTP

dns []dns.Request
DNS contains the dns request to make in the template Examples: ```yaml dns: extractors: - type: regex regex: - ec2-[-\d]+\.compute[-\d]*\.amazonaws\.com - ec2-[-\d]+\.[\w\d\-]+\.compute[-\d]*\.amazonaws\.com name: '{{FQDN}}' type: CNAME class: inet retries: 2 recursion: false ```

file []file.Request
File contains the file request to make in the template Examples: ```yaml file: extractors: - type: regex regex: - amzn\.mws\.[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} extensions: - all ```

network []network.Request
Network contains the network request to make in the template WARNING: 'network' will be deprecated and will be removed in a future release. Please use 'tcp' instead. Examples: ```yaml network: host: - '{{Hostname}}' - '{{Hostname}}:2181' inputs: - data: "envi\r\nquit\r\n" read-size: 2048 matchers: - type: word words: - zookeeper.version ```

description: | TCP contains the network request to make in the template examples: - value: exampleNormalNetworkRequest RequestsWithTCP is placeholder(internal) only, and should not be used instead use RequestsNetwork

headless []headless.Request
Headless contains the headless request to make in the template.

ssl []ssl.Request
SSL contains the SSL request to make in the template.

websocket []websocket.Request
Websocket contains the Websocket request to make in the template.

whois []whois.Request
WHOIS contains the WHOIS request to make in the template.

self-contained bool
Self Contained marks Requests for the template as self-contained

stop-at-first-match bool
Stop execution once first match is found

Signature is the request signature method Valid values: - AWS

variables variables.Variable
Variables contains any variables for the current request.

constants map[string]interface{}
Constants contains any scalar constant for the current template

## model.Info Info contains metadata information about a template Appears in: - Template.info ```yaml name: Argument Injection in Ruby Dragonfly author: 0xspara tags: cve,cve2021,rce,ruby reference: https://zxsecurity.co.nz/research/argunment-injection-ruby-dragonfly/ severity: high ```
name string
Name should be good short summary that identifies what the template does. Examples: ```yaml name: bower.json file disclosure ``` ```yaml name: Nagios Default Credentials Check ```

Author of the template. Multiple values can also be specified separated by commas. Examples: ```yaml author: ```

Any tags for the template. Multiple values can also be specified separated by commas. Examples: ```yaml # Example tags tags: cve,cve2019,grafana,auth-bypass,dos ```

description string
Description of the template. You can go in-depth here on what the template actually does. Examples: ```yaml description: Bower is a package manager which stores package information in the bower.json file ``` ```yaml description: Subversion ALM for the enterprise before 8.8.2 allows reflected XSS at multiple locations ```

impact string
Impact of the template. You can go in-depth here on impact of the template. Examples: ```yaml impact: Successful exploitation of this vulnerability could allow an attacker to execute arbitrary SQL queries, potentially leading to unauthorized access, data leakage, or data manipulation. ``` ```yaml impact: Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information. ```

References for the template. This should contain links relevant to the template. Examples: ```yaml reference: - https://github.com/strapi/strapi - https://github.com/getgrav/grav ```

severity severity.Holder
Severity of the template.

metadata map[string]interface{}
Metadata of the template. Examples: ```yaml metadata: customField1: customValue1 ```

classification model.Classification
Classification contains classification information about the template.

remediation string
Remediation steps for the template. You can go in-depth here on how to mitigate the problem found by this template. Examples: ```yaml remediation: Change the default administrative username and password of Apache ActiveMQ by editing the file jetty-realm.properties ```

## stringslice.StringSlice StringSlice represents a single (in-lined) or multiple string value(s). The unmarshaller does not automatically convert in-lined strings to []string, hence the interface{} type is required. Appears in: - model.Info.author - model.Info.tags - model.Classification.cve-id - model.Classification.cwe-id ```yaml ``` ```yaml # Example tags cve,cve2019,grafana,auth-bypass,dos ``` ```yaml CVE-2020-14420 ``` ```yaml CWE-22 ``` ## stringslice.RawStringSlice Appears in: - model.Info.reference ```yaml - https://github.com/strapi/strapi - https://github.com/getgrav/grav ``` ## severity.Holder Holder holds a Severity type. Required for un/marshalling purposes Appears in: - model.Info.severity
Severity
Enum Values: - undefined - info - low - medium - high - critical - unknown

## model.Classification Appears in: - model.Info.classification
CVE ID for the template Examples: ```yaml cve-id: CVE-2020-14420 ```

CWE ID for the template. Examples: ```yaml cwe-id: CWE-22 ```

cvss-metrics string
CVSS Metrics for the template. Examples: ```yaml cvss-metrics: 3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H ```

cvss-score float64
CVSS Score for the template. Examples: ```yaml cvss-score: "9.8" ```

epss-score float64
EPSS Score for the template. Examples: ```yaml epss-score: "0.42509" ```

epss-percentile float64
EPSS Percentile for the template. Examples: ```yaml epss-percentile: "0.42509" ```

cpe string
CPE for the template. Examples: ```yaml cpe: cpe:/a:vendor:product:version ```

## http.Request Request contains a http request to be made from a template Appears in: - Template.requests - Template.http ```yaml matchers: - type: word words: - '[core]' - type: dsl condition: and dsl: - '!contains(tolower(body), ''template-id - ID of the template executed - template-info - Info Block of the template executed - template-path - Path of the template executed - host - Host is the input to the template - matched - Matched is the input which was matched upon - type - Type is the type of request made - request - HTTP request made from the client - response - HTTP response received from server - status_code - Status Code received from the Server - body - HTTP response body received from server (default) - content_length - HTTP Response content length - header,all_headers - HTTP response headers - duration - HTTP request time duration - all - HTTP response body + headers - cookies_from_response - HTTP response cookies in name:value format - headers_from_response - HTTP response headers in name:value format
path []string
Path contains the path/s for the HTTP requests. It supports variables as placeholders. Examples: ```yaml # Some example path values path: - '{{BaseURL}}' - '{{BaseURL}}/+CSCOU+/../+CSCOE+/files/file_list.json?path=/sessions' ```

raw []string
Raw contains HTTP Requests in Raw format. Examples: ```yaml # Some example raw requests raw: - |- GET /etc/passwd HTTP/1.1 Host: Content-Length: 4 - |- POST /.%0d./.%0d./.%0d./.%0d./bin/sh HTTP/1.1 Host: {{Hostname}} User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:71.0) Gecko/20100101 Firefox/71.0 Content-Length: 1 Connection: close echo echo cat /etc/passwd 2>&1 ```

id string
ID is the optional id of the request

name string
Name is the optional name of the request. If a name is specified, all the named request in a template can be matched upon in a combined manner allowing multi-request based matchers.

Attack is the type of payload combinations to perform. batteringram is inserts the same payload into all defined payload positions at once, pitchfork combines multiple payload sets and clusterbomb generates permutations and combinations for all payloads. Valid values: - batteringram - pitchfork - clusterbomb

Method is the HTTP Request Method.

body string
Body is an optional parameter which contains HTTP Request body. Examples: ```yaml # Same Body for a Login POST request body: username=test&password=test ```

payloads map[string]interface{}
Payloads contains any payloads for the current request. Payloads support both key-values combinations where a list of payloads is provided, or optionally a single file can also be provided as payload which will be read on run-time.

headers map[string]string
Headers contains HTTP Headers to send with the request. Examples: ```yaml headers: Any-Header: Any-Value Content-Length: "1" Content-Type: application/x-www-form-urlencoded ```

race_count int
RaceCount is the number of times to send a request in Race Condition Attack. Examples: ```yaml # Send a request 5 times race_count: 5 ```

max-redirects int
MaxRedirects is the maximum number of redirects that should be followed. Examples: ```yaml # Follow up to 5 redirects max-redirects: 5 ```

pipeline-concurrent-connections int
PipelineConcurrentConnections is number of connections to create during pipelining. Examples: ```yaml # Create 40 concurrent connections pipeline-concurrent-connections: 40 ```

pipeline-requests-per-connection int
PipelineRequestsPerConnection is number of requests to send per connection when pipelining. Examples: ```yaml # Send 100 requests per pipeline connection pipeline-requests-per-connection: 100 ```

threads int
Threads specifies number of threads to use sending requests. This enables Connection Pooling. Connection: Close attribute must not be used in request while using threads flag, otherwise pooling will fail and engine will continue to close connections after requests. Examples: ```yaml # Send requests using 10 concurrent threads threads: 10 ```

max-size int
MaxSize is the maximum size of http response body to read in bytes. Examples: ```yaml # Read max 2048 bytes of the response max-size: 2048 ```

fuzzing []fuzz.Rule
Fuzzing describes schema to fuzz http requests

Signature is the request signature method Valid values: - AWS

cookie-reuse bool
CookieReuse is an optional setting that enables cookie reuse for all requests defined in raw section.

read-all bool
Enables force reading of the entire raw unsafe request body ignoring any specified content length headers.

redirects bool
Redirects specifies whether redirects should be followed by the HTTP Client. This can be used in conjunction with `max-redirects` to control the HTTP request redirects.

host-redirects bool
Redirects specifies whether only redirects to the same host should be followed by the HTTP Client. This can be used in conjunction with `max-redirects` to control the HTTP request redirects.

pipeline bool
Pipeline defines if the attack should be performed with HTTP 1.1 Pipelining All requests must be idempotent (GET/POST). This can be used for race conditions/billions requests.

unsafe bool
Unsafe specifies whether to use rawhttp engine for sending Non RFC-Compliant requests. This uses the [rawhttp](https://github.com/projectdiscovery/rawhttp) engine to achieve complete control over the request, with no normalization performed by the client.

race bool
Race determines if all the request have to be attempted at the same time (Race Condition) The actual number of requests that will be sent is determined by the `race_count` field.

req-condition bool
ReqCondition automatically assigns numbers to requests and preserves their history. This allows matching on them later for multi-request conditions.

stop-at-first-match bool
StopAtFirstMatch stops the execution of the requests and template as soon as a match is found.

skip-variables-check bool
SkipVariablesCheck skips the check for unresolved variables in request

iterate-all bool
IterateAll iterates all the values extracted from internal extractors

digest-username string
DigestAuthUsername specifies the username for digest authentication

digest-password string
DigestAuthPassword specifies the password for digest authentication

disable-path-automerge bool
DisablePathAutomerge disables merging target url path with raw request path

## generators.AttackTypeHolder AttackTypeHolder is used to hold internal type of the protocol Appears in: - http.Request.attack - dns.Request.attack - network.Request.attack - headless.Request.attack - websocket.Request.attack
AttackType
Enum Values: - batteringram - pitchfork - clusterbomb

## HTTPMethodTypeHolder HTTPMethodTypeHolder is used to hold internal type of the HTTP Method Appears in: - http.Request.method
HTTPMethodType
Enum Values: - GET - HEAD - POST - PUT - DELETE - CONNECT - OPTIONS - TRACE - PATCH - PURGE - Debug

## fuzz.Rule Rule is a single rule which describes how to fuzz the request Appears in: - http.Request.fuzzing - headless.Request.fuzzing
type string
Type is the type of fuzzing rule to perform. replace replaces the values entirely. prefix prefixes the value. postfix postfixes the value and infix places between the values. Valid values: - replace - prefix - postfix - infix

part string
Part is the part of request to fuzz. query fuzzes the query part of url. More parts will be added later. Valid values: - query

mode string
Mode is the mode of fuzzing to perform. single fuzzes one value at a time. multiple fuzzes all values at same time. Valid values: - single - multiple

keys []string
Keys is the optional list of key named parameters to fuzz. Examples: ```yaml # Examples of keys keys: - url - file - host ```

keys-regex []string
KeysRegex is the optional list of regex key parameters to fuzz. Examples: ```yaml # Examples of key regex keys-regex: - url.* ```

values []string
Values is the optional list of regex value parameters to fuzz. Examples: ```yaml # Examples of value regex values: - https?://.* ```

fuzz []string
Fuzz is the list of payloads to perform substitutions with. Examples: ```yaml # Examples of fuzz fuzz: - '{{ssrf}}' - '{{interactsh-url}}' - example-value ```

## SignatureTypeHolder SignatureTypeHolder is used to hold internal type of the signature Appears in: - http.Request.signature ## dns.Request Request contains a DNS protocol request to be made from a template Appears in: - Template.dns ```yaml extractors: - type: regex regex: - ec2-[-\d]+\.compute[-\d]*\.amazonaws\.com - ec2-[-\d]+\.[\w\d\-]+\.compute[-\d]*\.amazonaws\.com name: '{{FQDN}}' type: CNAME class: inet retries: 2 recursion: false ``` Part Definitions: - template-id - ID of the template executed - template-info - Info Block of the template executed - template-path - Path of the template executed - host - Host is the input to the template - matched - Matched is the input which was matched upon - request - Request contains the DNS request in text format - type - Type is the type of request made - rcode - Rcode field returned for the DNS request - question - Question contains the DNS question field - extra - Extra contains the DNS response extra field - answer - Answer contains the DNS response answer field - ns - NS contains the DNS response NS field - raw,body,all - Raw contains the raw DNS response (default) - trace - Trace contains trace data for DNS request if enabled
id string
ID is the optional id of the request

name string
Name is the Hostname to make DNS request for. Generally, it is set to {{FQDN}} which is the domain we get from input. Examples: ```yaml name: '{{FQDN}}' ```

RequestType is the type of DNS request to make.

class string
Class is the class of the DNS request. Usually it's enough to just leave it as INET. Valid values: - inet - csnet - chaos - hesiod - none - any

retries int
Retries is the number of retries for the DNS request Examples: ```yaml # Use a retry of 3 to 5 generally retries: 5 ```

trace bool
Trace performs a trace operation for the target.

trace-max-recursion int
TraceMaxRecursion is the number of max recursion allowed for trace operations Examples: ```yaml # Use a retry of 100 to 150 generally trace-max-recursion: 100 ```

Attack is the type of payload combinations to perform. Batteringram is inserts the same payload into all defined payload positions at once, pitchfork combines multiple payload sets and clusterbomb generates permutations and combinations for all payloads.

payloads map[string]interface{}
Payloads contains any payloads for the current request. Payloads support both key-values combinations where a list of payloads is provided, or optionally a single file can also be provided as payload which will be read on run-time.

recursion dns.bool
Recursion determines if resolver should recurse all records to get fresh results.

resolvers []string
Resolvers to use for the dns requests

## DNSRequestTypeHolder DNSRequestTypeHolder is used to hold internal type of the DNS type Appears in: - dns.Request.type
DNSRequestType
Enum Values: - A - NS - DS - CNAME - SOA - PTR - MX - TXT - AAAA - CAA - TLSA - ANY

## file.Request Request contains a File matching mechanism for local disk operations. Appears in: - Template.file ```yaml extractors: - type: regex regex: - amzn\.mws\.[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} extensions: - all ``` Part Definitions: - template-id - ID of the template executed - template-info - Info Block of the template executed - template-path - Path of the template executed - matched - Matched is the input which was matched upon - path - Path is the path of file on local filesystem - type - Type is the type of request made - raw,body,all,data - Raw contains the raw file contents
extensions []string
Extensions is the list of extensions or mime types to perform matching on. Examples: ```yaml extensions: - .txt - .go - .json ```

denylist []string
DenyList is the list of file, directories, mime types or extensions to deny during matching. By default, it contains some non-interesting extensions that are hardcoded in nuclei. Examples: ```yaml denylist: - .avi - .mov - .mp3 ```

id string
ID is the optional id of the request

max-size string
MaxSize is the maximum size of the file to run request on. By default, nuclei will process 1 GB of content and not go more than that. It can be set to much lower or higher depending on use. If set to "no" then all content will be processed Examples: ```yaml max-size: 5Mb ```

archive bool
elaborates archives

mime-type bool
enables mime types check

no-recursive bool
NoRecursive specifies whether to not do recursive checks if folders are provided.

## network.Request Request contains a Network protocol request to be made from a template Appears in: - Template.network - Template.tcp ```yaml host: - '{{Hostname}}' - '{{Hostname}}:2181' inputs: - data: "envi\r\nquit\r\n" read-size: 2048 matchers: - type: word words: - zookeeper.version ``` Part Definitions: - template-id - ID of the template executed - template-info - Info Block of the template executed - template-path - Path of the template executed - host - Host is the input to the template - matched - Matched is the input which was matched upon - type - Type is the type of request made - request - Network request made from the client - body,all,data - Network response received from server (default) - raw - Full Network protocol data
id string
ID is the optional id of the request

host []string
Host to send network requests to. Usually it's set to `{{Hostname}}`. If you want to enable TLS for TCP Connection, you can use `tls://{{Hostname}}`. Examples: ```yaml host: - '{{Hostname}}' ```

Attack is the type of payload combinations to perform. Batteringram is inserts the same payload into all defined payload positions at once, pitchfork combines multiple payload sets and clusterbomb generates permutations and combinations for all payloads.

payloads map[string]interface{}
Payloads contains any payloads for the current request. Payloads support both key-values combinations where a list of payloads is provided, or optionally a single file can also be provided as payload which will be read on run-time.

inputs []network.Input
Inputs contains inputs for the network socket

port string
description: | Port is the port to send network requests to. this acts as default port but is overriden if target/input contains non-http(s) ports like 80,8080,8081 etc

exclude-ports string
description: | ExcludePorts is the list of ports to exclude from being scanned . It is intended to be used with `Port` field and contains a list of ports which are ignored/skipped

read-size int
ReadSize is the size of response to read at the end Default value for read-size is 1024. Examples: ```yaml read-size: 2048 ```

read-all bool
ReadAll determines if the data stream should be read till the end regardless of the size Default value for read-all is false. Examples: ```yaml read-all: false ```

## network.Input Appears in: - network.Request.inputs
data string
Data is the data to send as the input. It supports DSL Helper Functions as well as normal expressions. Examples: ```yaml data: TEST ``` ```yaml data: hex_decode('50494e47') ```

Type is the type of input specified in `data` field. Default value is text, but hex can be used for hex formatted data. Valid values: - hex - text

read int
Read is the number of bytes to read from socket. This can be used for protocols which expect an immediate response. You can read and write responses one after another and eventually perform matching on every data captured with `name` attribute. The [network docs](https://nuclei.projectdiscovery.io/templating-guide/protocols/network/) highlight more on how to do this. Examples: ```yaml read: 1024 ```

name string
Name is the optional name of the data read to provide matching on. Examples: ```yaml name: prefix ```

## NetworkInputTypeHolder NetworkInputTypeHolder is used to hold internal type of the Network type Appears in: - network.Input.type
NetworkInputType
Enum Values: - hex - text

## headless.Request Request contains a Headless protocol request to be made from a template Appears in: - Template.headless Part Definitions: - template-id - ID of the template executed - template-info - Info Block of the template executed - template-path - Path of the template executed - host - Host is the input to the template - matched - Matched is the input which was matched upon - type - Type is the type of request made - req - Headless request made from the client - resp,body,data - Headless response received from client (default)
id string
ID is the optional id of the request

Attack is the type of payload combinations to perform. Batteringram is inserts the same payload into all defined payload positions at once, pitchfork combines multiple payload sets and clusterbomb generates permutations and combinations for all payloads.

payloads map[string]interface{}
Payloads contains any payloads for the current request. Payloads support both key-values combinations where a list of payloads is provided, or optionally a single file can also be provided as payload which will be read on run-time.

steps []engine.Action
Steps is the list of actions to run for headless request

descriptions: | User-Agent is the type of user-agent to use for the request.

custom_user_agent string
description: | If UserAgent is set to custom, customUserAgent is the custom user-agent to use for the request.

stop-at-first-match bool
StopAtFirstMatch stops the execution of the requests and template as soon as a match is found.

fuzzing []fuzz.Rule
## engine.Action Action is an action taken by the browser to reach a navigation Each step that the browser executes is an action. Most navigations usually start from the ActionLoadURL event, and further navigations are discovered on the found page. We also keep track and only scrape new navigation from pages we haven't crawled yet. Appears in: - headless.Request.steps
args map[string]string
Args contain arguments for the headless action. Per action arguments are described in detail [here](https://nuclei.projectdiscovery.io/templating-guide/protocols/headless/).

name string
Name is the name assigned to the headless action. This can be used to execute code, for instance in browser DOM using script action, and get the result in a variable which can be matched upon by nuclei. An Example template [here](https://github.com/projectdiscovery/nuclei-templates/blob/main/headless/prototype-pollution-check.yaml).

description string
Description is the optional description of the headless action

Action is the type of the action to perform.

## ActionTypeHolder ActionTypeHolder is used to hold internal type of the action Appears in: - engine.Action.action
ActionType
Enum Values: - navigate - script - click - rightclick - text - screenshot - time - select - files - waitload - getresource - extract - setmethod - addheader - setheader - deleteheader - setbody - waitevent - keyboard - debug - sleep - waitvisible

## userAgent.UserAgentHolder UserAgentHolder holds a UserAgent type. Required for un/marshalling purposes Appears in: - headless.Request.user_agent
UserAgent
Enum Values: - random - off - default - custom

## ssl.Request Request is a request for the SSL protocol Appears in: - Template.ssl Part Definitions: - type - Type is the type of request made - response - JSON SSL protocol handshake details - not_after - Timestamp after which the remote cert expires - host - Host is the input to the template - matched - Matched is the input which was matched upon
address string
Address contains address for the request

min_version string
Minimum tls version - auto if not specified. Valid values: - sslv3 - tls10 - tls11 - tls12 - tls13

max_version string
Max tls version - auto if not specified. Valid values: - sslv3 - tls10 - tls11 - tls12 - tls13

cipher_suites []string
Client Cipher Suites - auto if not specified.

scan_mode string
description: | Tls Scan Mode - auto if not specified values: - "ctls" - "ztls" - "auto" - "openssl" # reverts to "auto" is openssl is not installed

## websocket.Request Request is a request for the Websocket protocol Appears in: - Template.websocket Part Definitions: - type - Type is the type of request made - success - Success specifies whether websocket connection was successful - request - Websocket request made to the server - response - Websocket response received from the server - host - Host is the input to the template - matched - Matched is the input which was matched upon
address string
Address contains address for the request

inputs []websocket.Input
Inputs contains inputs for the websocket protocol

headers map[string]string
Headers contains headers for the request.

Attack is the type of payload combinations to perform. Sniper is each payload once, pitchfork combines multiple payload sets and clusterbomb generates permutations and combinations for all payloads.

payloads map[string]interface{}
Payloads contains any payloads for the current request. Payloads support both key-values combinations where a list of payloads is provided, or optionally a single file can also be provided as payload which will be read on run-time.

## websocket.Input Appears in: - websocket.Request.inputs
data string
Data is the data to send as the input. It supports DSL Helper Functions as well as normal expressions. Examples: ```yaml data: TEST ``` ```yaml data: hex_decode('50494e47') ```

name string
Name is the optional name of the data read to provide matching on. Examples: ```yaml name: prefix ```

## whois.Request Request is a request for the WHOIS protocol Appears in: - Template.whois
query string
Query contains query for the request

server string
description: | Optional WHOIS server URL. If present, specifies the WHOIS server to execute the Request on. Otherwise, nil enables bootstrapping

## http.SignatureTypeHolder SignatureTypeHolder is used to hold internal type of the signature Appears in: - Template.signature ## variables.Variable Variable is a key-value pair of strings that can be used throughout template. Appears in: - Template.variables