---
title: "SnapGene .dna Parser"
method: POST
path: "/parse_snapgene"
tags: ["Files & formats"]
---

# SnapGene .dna Parser

`POST /parse_snapgene`

## Request

- Base URL: `https://seqbench.com/api/v1`
- URL: `https://seqbench.com/api/v1/parse_snapgene`
- Auth: none required

Read a SnapGene .dna file: sequence, topology, every feature with its span, strand, display color and qualifiers (spliced and origin-spanning features kept as such), and the saved primer list.

## Request body

- object
  - `fileBase64` string, required: The binary SnapGene .dna file, base64-encoded. A `data:...;base64,` prefix is accepted.
  - `fileName` string: Optional original file name (echoed back).
  - `includeSequence` boolean: Include the full sequence. Turn it off to ask what is IN a construct without moving the bases: a 250 kb BAC is 244 kB of the response and length/topology/features answer most questions without it.
  - `featureLimit` integer: Cap on features returned (max 2000). featureCount always reports the true total and `truncated` says whether the list was cut.

## Response `200`

Tool ran successfully.

- SuccessResponse: Standard success envelope returned by every single-tool call.
  - `ok` unknown, required
  - `tool` string, required: The tool slug that ran.
  - `result` object, required: Tool-specific output object. Its shape depends on the tool — call `GET /{tool}` or see the docs for each tool's fields.
  - `gate` GateResult
    - `pass` boolean, required: True if and only if every hard check passed.
    - `checks` GateCheck[], required
      - `id` string, required
      - `label` string, required
      - `severity` 'hard' | 'soft', required
      - `pass` boolean, required
      - `message` string, required
      - `value` number
      - `threshold` string
    - `notChecked` string[], required: Honest list of what this gate does NOT verify.
  - `provenance` Provenance, required
    - `apiVersion` string, required
    - `tool` union, required: Tool slug, or an array of slugs (one per step) for a workflow.
      - string
      - string[]
    - `generatedAt` string, date-time, required: ISO 8601 timestamp of when the result was generated.

## Other responses

- `400`: Invalid argument or the tool could not run.
- `404`: Unknown tool.
- `429`: Rate limited (metered tools only). Body carries code `rate_limited` and retryable `true`; honor the Retry-After header.
- `503`: A metered tool is momentarily at capacity. The identical request should succeed after Retry-After; body carries code `upstream_unavailable`.

---

[API](https://skmtc.dev/seqbench/apis/seqbench-api.md) · [All operations](https://skmtc.dev/seqbench/apis/seqbench-api/llms.txt) · [OpenAPI document](https://skmtc.dev/seqbench/apis/seqbench-api/revisions/132575216865?raw)