Voiceflow bearer token
Create block
curl --request POST \
--url https://realtime-api.voiceflow.com/v2/stable/workflow/<workflowID>/block \
--header 'Authorization: Bearer <token>'
--header 'Content-Type: application/json' \
--data '{
"name": "<string>",
"color": "<string>",
"placement": {
"afterBlockID": "<string>"
},
"from": {
"stepID": "<string>",
"port": "<string>"
},
"steps": [
{
"kind": "message",
"key": "<StableWorkflowSeedKey>",
"content": "<StableWorkflowStepMessageContentInput>",
"links": {}
}
]
}'const response = await fetch('https://realtime-api.voiceflow.com/v2/stable/workflow/<workflowID>/block?projectID=<projectID>&environmentAlias=<environmentAlias>', {
method: 'POST',
headers: {
Authorization: 'Bearer <token>',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"name": "<string>",
"color": "<string>",
"placement": {
"afterBlockID": "<string>"
},
"from": {
"stepID": "<string>",
"port": "<string>"
},
"steps": [
{
"kind": "message",
"key": "<StableWorkflowSeedKey>",
"content": "<StableWorkflowStepMessageContentInput>",
"links": {}
}
]
}),
});
const data = await response.json();import requests
response = requests.post(
'https://realtime-api.voiceflow.com/v2/stable/workflow/<workflowID>/block?projectID=<projectID>&environmentAlias=<environmentAlias>',
headers={'Authorization': 'Bearer <token>'},
json={
"name": "<string>",
"color": "<string>",
"placement": {
"afterBlockID": "<string>"
},
"from": {
"stepID": "<string>",
"port": "<string>"
},
"steps": [
{
"kind": "message",
"key": "<StableWorkflowSeedKey>",
"content": "<StableWorkflowStepMessageContentInput>",
"links": {}
}
]
},
)
data = response.json()vf workflow create-block --workflow-id <workflowID> --project-id <projectID> --environment-alias <environmentAlias> \
< body.json{
"message": "<string>",
"block": {
"id": "<string>",
"name": "<string>",
"inboundFrom": [
{
"stepID": "<string>",
"port": "<string>"
}
],
"steps": [
{
"id": "<string>",
"kind": "<StableWorkflowStepKind>",
"exitClass": "<StableWorkflowExitClass>",
"content": "<StableWorkflowStepContent>",
"fallsThroughTo": "<string>",
"suppressedPorts": [
"<string>"
],
"links": [
"<StableWorkflowLink>"
],
"reconciledPorts": "<StableWorkflowReconciledPorts>",
"warnings": [
"<StableWorkflowDiagnostic>"
]
}
]
},
"ids": {},
"unresolvedReferences": [
{
"path": "<string>",
"token": "<string>",
"reason": "unknown"
}
],
"replacedLink": {
"stepID": "<string>",
"port": "<string>",
"to": "<string>"
}
}Adds a block of 1 to 20 steps to an existing workflow, placed next to `placement.afterBlockID`. When you send `from`, the call also links that port to the new block and replaces the block that port led to. If other edits keep changing the workflow while the call saves, it returns 409 and writes nothing.
POST
/v2/stable/workflow/{workflowID}/block
Create block
curl --request POST \
--url https://realtime-api.voiceflow.com/v2/stable/workflow/<workflowID>/block \
--header 'Authorization: Bearer <token>'
--header 'Content-Type: application/json' \
--data '{
"name": "<string>",
"color": "<string>",
"placement": {
"afterBlockID": "<string>"
},
"from": {
"stepID": "<string>",
"port": "<string>"
},
"steps": [
{
"kind": "message",
"key": "<StableWorkflowSeedKey>",
"content": "<StableWorkflowStepMessageContentInput>",
"links": {}
}
]
}'const response = await fetch('https://realtime-api.voiceflow.com/v2/stable/workflow/<workflowID>/block?projectID=<projectID>&environmentAlias=<environmentAlias>', {
method: 'POST',
headers: {
Authorization: 'Bearer <token>',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"name": "<string>",
"color": "<string>",
"placement": {
"afterBlockID": "<string>"
},
"from": {
"stepID": "<string>",
"port": "<string>"
},
"steps": [
{
"kind": "message",
"key": "<StableWorkflowSeedKey>",
"content": "<StableWorkflowStepMessageContentInput>",
"links": {}
}
]
}),
});
const data = await response.json();import requests
response = requests.post(
'https://realtime-api.voiceflow.com/v2/stable/workflow/<workflowID>/block?projectID=<projectID>&environmentAlias=<environmentAlias>',
headers={'Authorization': 'Bearer <token>'},
json={
"name": "<string>",
"color": "<string>",
"placement": {
"afterBlockID": "<string>"
},
"from": {
"stepID": "<string>",
"port": "<string>"
},
"steps": [
{
"kind": "message",
"key": "<StableWorkflowSeedKey>",
"content": "<StableWorkflowStepMessageContentInput>",
"links": {}
}
]
},
)
data = response.json()vf workflow create-block --workflow-id <workflowID> --project-id <projectID> --environment-alias <environmentAlias> \
< body.json{
"message": "<string>",
"block": {
"id": "<string>",
"name": "<string>",
"inboundFrom": [
{
"stepID": "<string>",
"port": "<string>"
}
],
"steps": [
{
"id": "<string>",
"kind": "<StableWorkflowStepKind>",
"exitClass": "<StableWorkflowExitClass>",
"content": "<StableWorkflowStepContent>",
"fallsThroughTo": "<string>",
"suppressedPorts": [
"<string>"
],
"links": [
"<StableWorkflowLink>"
],
"reconciledPorts": "<StableWorkflowReconciledPorts>",
"warnings": [
"<StableWorkflowDiagnostic>"
]
}
]
},
"ids": {},
"unresolvedReferences": [
{
"path": "<string>",
"token": "<string>",
"reason": "unknown"
}
],
"replacedLink": {
"stepID": "<string>",
"port": "<string>",
"to": "<string>"
}
}Authorizations
Query Parameters
Body
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Option 1
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Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 2
Show child attributes
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 3
Show child attributes
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 4
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 5
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 6
Show child attributes
Show child attributes
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 7
Show child attributes
Show child attributes
Show child attributes
Plain text; markdown is not interpreted. {variable_name} inserts a variable or entity, {variable_name.path} a field of a variable. Escape a literal { or \ with a backslash. A name matching neither is stored as literal text and reported in unresolvedReferences; secrets are not available here.
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 8
Show child attributes
Show child attributes
StableWorkflowButtonInput — see its attributes above
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 9
Show child attributes
Show child attributes
Show child attributes
StableWorkflowButtonInput — see its attributes above
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 10
Show child attributes
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 11
Show child attributes
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 12
Show child attributes
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 13
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 14
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 15
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 16
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 17
Show child attributes
Show child attributes
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 18
Show child attributes
Show child attributes
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Option 19
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Call forward works only in a phone project. In a chat project, do not add it as a step or an action: tell the user it needs a phone project.
Show child attributes
Plain text; markdown is not interpreted. {variable_name} inserts a variable or entity, {variable_name.path} a field of a variable. Escape a literal { or \ with a backslash. A name matching neither is stored as literal text and reported in unresolvedReferences; secrets are not available here.
VariableReferenceString — see its attributes above
Ports to link, keyed by port: next, else, fail, no-reply, conversation-turn, or a function or playbook path ID. In create, values are block keys from this request; in add_blocks, block keys from this request or existing block IDs; everywhere else, existing block IDs. A branch you create links through its own to.
Response
201 - application/jsonReturns a message, the new block with its steps, a map from each key you sent to the ID the server created, and any unresolved references. When a link was replaced, replacedLink names the block the port led to before.
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The steps in the order they run.
Show child attributes
What the step does. api, function, integration and mcp are Tool steps. playbook and operator are Agent steps. goToBlock jumps to a block or a workflow start and ends the path. callForward transfers a phone call and ends the path. legacy is a step these operations show but cannot change.
Available options:
message, end, set, workflow, listen, condition, buttons, card, carousel, code, api, function, integration, mcp, playbook, operator, crew, handoff, legacy, goToBlock, callForwardHow the step leaves. sequential: it continues to the step below it, or through next when it is last. branch: it leaves through one of its links, so it must be last. async-branch: a Card or Carousel, whose linked buttons run from any position. terminal: it ends the path.
Available options:
sequential, branch, async-branch, terminalThe step's settings, shaped by its kind. A step these operations cannot show reads as readOnly.
Show child attributes
Option 1 · StableWorkflowStepMessageContent
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Option 1
object · 3 attributes:
responseType, messageID, waitForUserResponseOption 2
object · 3 attributes:
responseType, promptID, waitForUserResponseOption 2 · StableWorkflowStepEndContent
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Option 1
object · 3 attributes:
responseType, messageID, responseEnabledOption 2
object · 3 attributes:
responseType, promptID, responseEnabledOption 3 · StableWorkflowStepSetContent
Show child attributes
Option 4 · StableWorkflowStepWorkflowContent
Option 5 · StableWorkflowStepListenContent
Option 6 · StableWorkflowStepConditionContent
Option 7 · StableWorkflowStepButtonsContent
Option 8 · StableWorkflowStepCardContent
Show child attributes
Option 9 · StableWorkflowStepCarouselContent
Show child attributes
Option 10 · StableWorkflowStepCodeContent
Option 11 · StableWorkflowStepApiContent
Show child attributes
Option 12 · StableWorkflowStepFunctionContent
Show child attributes
Option 13 · StableWorkflowStepIntegrationContent
Show child attributes
Option 14 · StableWorkflowStepMcpContent
Show child attributes
Option 15 · StableWorkflowStepOperatorContent
Show child attributes
Option 16 · StableWorkflowStepPlaybookContent
Show child attributes
Option 17 · StableWorkflowStepCrewContent
Show child attributes
Option 18 · StableWorkflowStepHandoffContent
Show child attributes
Option 19 · StableWorkflowStepGoToBlockContent
Show child attributes
Option 20 · StableWorkflowStepCallForwardContent
Show child attributes
Plain text; markdown is not interpreted. {variable_name} inserts a variable or entity, {variable_name.path} a field of a variable. Escape a literal { or \ with a backslash. A name matching neither is stored as literal text and reported in unresolvedReferences; secrets are not available here.
VariableReferenceString — see its attributes above
Show child attributes
The port actions this exit runs, in order, before it reaches to.
Show child attributes
What the step does. api, function, integration and mcp are Tool steps. playbook and operator are Agent steps. goToBlock jumps to a block or a workflow start and ends the path. callForward transfers a phone call and ends the path. legacy is a step these operations show but cannot change.
Available options:
message, end, set, workflow, listen, condition, buttons, card, carousel, code, api, function, integration, mcp, playbook, operator, crew, handoff, legacy, goToBlock, callForwardStableWorkflowStepKind — see its attributes above
The step's settings, shaped by its kind. A step these operations cannot show reads as readOnly.
StableWorkflowStepContent — see its attributes above
StableWorkflowDiagnostic — see its attributes above
References this write kept as literal text instead of binding, each with the reason. The write still succeeded.
Show child attributes
unknown: no variable or entity of that name. secret-not-allowed: the name is a project secret and this field does not accept one. path-on-non-variable: only a variable has fields. resource-id: a bare resource id, not a name. invalid-name: outside the ^\w{1,64}$ name grammar. dangling: the reference rendered as a bare id, because its row is gone or its name is outside the name grammar.
Available options:
unknown, secret-not-allowed, path-on-non-variable, resource-id, invalid-name, danglingPresent when from already led to another block: the link this call replaced.
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