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POST
/
launch
curl --request POST \
  --url https://builder.snek.fun/launch \
  --header 'Content-Type: multipart/form-data' \
  --form '[email protected]' \
  --form 'info={
    "assetType":"Meme",
    "name":"DAVE",
    "ticker":"DAVE",
    "description":"A sample token launch",
    "launchType":"DEFAULT",
    "initialDeposit":"1000000",
    "changeAddress":"addr1...",
    "utxos":"splash-wallet"
  }'

{
  "id": "launch-01...",
  "cbor": "84a500...",
  "partial": true,
  "assetId": "63f947b8d9535bc4e4ce6919e3dc056547e8d30ada12f29aa5f826b8.44415645",
  "assetSubject": "44415645",
  "policyId": "63f947b8d9535bc4e4ce6919e3dc056547e8d30ada12f29aa5f826b8",
  "logoCID": "bafybeigdyrzt5...",
  "userOutputTokens": "1000000000"
}
Builds the transaction that creates a new token, deploys its bonding curve, and (optionally) seeds the creator’s initial buy. The request body is multipart/form-data. If info.collaterals are omitted, the builder signs the transaction before returning it. If info.collaterals are provided explicitly, the returned CBOR remains unsigned. Auth: Public

​
Form fields

​
image
file
required
Token image file. Supported MIME types: image/png, image/jpg, image/jpeg, image/gif.
​
info
object
required
Token launch payload object sent alongside image.
​
info.assetType
string
required
Token category. One of Meme or AI.
​
info.name
string
required
Token name. Maximum 16 characters.
​
info.ticker
string
required
Token ticker. Maximum 6 alphanumeric characters.
​
info.description
string
required
Token description. Maximum 500 characters.
​
info.twitter
string
Optional X / Twitter URL.
​
info.discord
string
Optional Discord invite URL.
​
info.telegram
string
Optional Telegram URL.
​
info.website
string
Optional website URL.
​
info.launchType
string
Optional launch tier. One of DEFAULT or HYPED. Defaults to DEFAULT.
​
info.initialDeposit
string
Optional lovelace amount for the creator’s initial buy.
​
info.changeAddress
string
required
Bech32 change address.

​
Response

​
id
string
Builder transaction ID.
​
cbor
string
Hex-encoded transaction CBOR. It is signed when info.collaterals are omitted.
​
partial
boolean
Whether the returned transaction is partial. It is true when info.collaterals are omitted and false when they are provided explicitly.
​
assetId
string
Full Cardano asset ID for the launched token.
​
assetSubject
string
Hex asset subject for the launched token.
​
policyId
string
Policy ID of the launched token.
​
logoCID
string
Uploaded IPFS CID for the token image.
​
userOutputTokens
string
Optional token amount reserved to the creator output.
curl --request POST \
  --url https://builder.snek.fun/launch \
  --header 'Content-Type: multipart/form-data' \
  --form '[email protected]' \
  --form 'info={
    "assetType":"Meme",
    "name":"DAVE",
    "ticker":"DAVE",
    "description":"A sample token launch",
    "launchType":"DEFAULT",
    "initialDeposit":"1000000",
    "changeAddress":"addr1...",
    "utxos":"splash-wallet"
  }'

{
  "id": "launch-01...",
  "cbor": "84a500...",
  "partial": true,
  "assetId": "63f947b8d9535bc4e4ce6919e3dc056547e8d30ada12f29aa5f826b8.44415645",
  "assetSubject": "44415645",
  "policyId": "63f947b8d9535bc4e4ce6919e3dc056547e8d30ada12f29aa5f826b8",
  "logoCID": "bafybeigdyrzt5...",
  "userOutputTokens": "1000000000"
}

​
Error response

​
cause
string
Machine-readable error code.
​
message
string
Human-readable error message.
Possible errors:
  • 400 INVALID_PARAMS — one or more required fields are missing, malformed, or fail validation.
  • 500 SERVER_ERROR — image processing, image upload, protocol config loading, mint data generation, transaction building, or optional signing failed.
{
  "cause": "INVALID_PARAMS",
  "message": "Invalid input"
}