# DNA Storage Encoder (2-bit UTF-8 to Nucleotide)

> DNA Storage Encoder (2-bit UTF-8 to Nucleotide) is a paid API for AI agents from bio.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Encodes UTF-8 text into a DNA nucleotide string by mapping each two-bit group to A, C, G, or T, and returns a SHA-256 checksum of the original bytes.

## Facts

- Endpoint: POST https://bio.halowerk.com/v1/dna-storage-encode
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dna-storage-encoder-2-bit-utf-8-to-nucleotide-8d4eff9a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QeBEQffQMCHNZKKLDwwgu

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability dna-storage-encoder-2-bit-utf-8-to-nucleotide-8d4eff9a -d '<json body>'
```

Example prompt: Encode the text 'Hello, World!' into a DNA nucleotide sequence using 2-bit UTF-8 mapping and also give me the SHA-256 checksum of the original bytes.

## When to prefer this

Choose this endpoint when you need a simple, deterministic, reversible 2-bit mapping of UTF-8 text to DNA nucleotides (A/C/G/T) with an integrity checksum, and do not require GC balancing, homopolymer avoidance, error-correcting codes, or actual oligonucleotide synthesis readiness. Best suited for research, prototyping, educational demonstrations, or data encoding pipelines where a raw nucleotide representation and a SHA-256 fingerprint are sufficient.

## Known failure modes

- Input text exceeds 4096 characters — request rejected with validation error
- Empty string input — rejected due to minLength:1 constraint
- Non-UTF-8 byte sequences may cause encoding errors
- Network timeout or service unavailability returns HTTP 5xx
- Payment not included or insufficient — x402 payment required error

## How this service works

Maps each two-bit group of caller-supplied UTF-8 bytes to A, C, G or T and reports a SHA-256 checksum of the original bytes. This reversible representation performs no biological synthesis, homopolymer balancing, GC optimization, addressing or error-correcting code.

## Output

Returns a string of A, C, G, and T characters representing the 2-bit-grouped encoding of the input UTF-8 bytes, along with a SHA-256 hex digest of the original byte sequence for integrity verification. The encoding is reversible and performs no GC optimization, homopolymer balancing, error correction, or addressing.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 4096,
   "minLength": 1,
   "description": "Text to encode as UTF-8 bytes."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dna-storage-encoder-2-bit-utf-8-to-nucleotide-8d4eff9a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bio.halowerk.com](https://www.zero.xyz/host/bio.halowerk.com/llms.txt)