Leni developers

File uploads

Run models, Context writes, and custom analyst Context can include supported attachments. Each decoded file is limited to 50 MB.

Format	Contract
Multipart	Use `multipart/form-data` and one or more binary parts named `files`. Analyst Organization Context files use `organisationMemoryFiles`.
JSON base64	Send a `files` or `filesBase64` array. When both exist, `filesBase64` is used for base64 entries.

File field	Required	Meaning
filename or name	Yes	Name presented to the upstream model.
contentBase64 or dataBase64	Yes	Standard base64 file bytes; whitespace is accepted.
contentType or mimeType	No	MIME type; defaults to application/octet-stream.

{
  "files": [{
    "filename": "policy.pdf",
    "contentType": "application/pdf",
    "contentBase64": "<base64>"
  }]
}

Validation

The 50 MB limit is measured after base64 decoding. Base64 increases request size, so keep the complete JSON body comfortably below transport limits. Reject invalid base64 and oversized files before sending. Do not place file bytes in URL parameters.

Multipart example

curl --fail-with-body --silent --show-error \
  -X POST "https://api.prod.ca-central-1.leni.co/users/add-to-memory" \
  -H "X-Api-Key: $LENI_API_KEY" \
  -F 'memoryType=user_memory' \
  -F 'modelType=leniq-pro' \
  -F 'noteTitle=Insurance policy' \
  -F 'noteContext=Current policy for portfolio reference' \
  -F 'files=@policy.pdf;type=application/pdf'

Do not set the multipart boundary manually; the HTTP client must generate it. For custom-analyst organization memory, use binary parts named organisationMemoryFiles instead.

Reading Context files

Use POST /users/memory/:memoryId/files to obtain five-minute links for files on an authorized Context note. Results are paginated with at most 25 files per page. The caller selects a note, not a raw attachment or storage key.

{
  "files": [{
    "filename": "policy.pdf",
    "downloadUrl": "<five-minute HTTPS link>",
    "expiresInSeconds": 300
  }],
  "total": 1,
  "page": 1,
  "pageSize": 20,
  "hasMore": false,
  "partial": false
}