# Boundary Guard Text Chunker

> Boundary Guard Text Chunker is a paid API for AI agents from boundary-guard-x402.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Splits input text into indexed, hash-identified chunks with SHA-256 integrity checksums for downstream agent processing

## Facts

- Endpoint: POST https://boundary-guard-x402.onrender.com/text-chunk
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/boundary-guard-text-chunker-1766ea17
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DE5hO5WfF_1huQOTzYIRT

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 boundary-guard-text-chunker-1766ea17 -d '<json body>'
```

Example prompt: Chunk this document into segments for my embedding pipeline and give me SHA-256 hashes for each piece so I can verify integrity later: 'Our refund policy allows returns within 30 days. Please email support@company.com or call 1-800-555-0100. For bulk orders visit enterprise.company.com.'

## When to prefer this

Choose this endpoint when you need text chunking with built-in cryptographic provenance (SHA-256 per chunk and for the source), especially inside an agent pipeline that requires verifiable, tamper-evident chunk receipts. Prefer over generic chunking libraries when you want a paid, trust-gated microservice with Boundary Receipt semantics and interoperability with other Boundary Guard infrastructure (risk scan, PII redaction, schema normalization).

## Known failure modes

- Empty or missing 'text' field returns validation error
- Extremely large payloads may time out on the Render free tier
- x402 payment failure results in 402 response before processing
- Malformed JSON body returns 400 error
- Network latency spikes on cold-start if Render instance has spun down

## Output

Returns an array of chunk objects each containing the chunk text, a zero-based index, SHA-256 hash, unique chunk_id, and start/end character offsets, plus a total chunk_count and source_sha256 hash of the original input.

## Example request

```json
{
 "text": "Please contact us at support@example.com or call 555-0123. Visit our website at https://www.example.com for more information. You can also reach our sales team at sales@example.org or check out our domain example.net"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/boundary-guard-text-chunker-1766ea17/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from boundary-guard-x402.onrender.com](https://www.zero.xyz/host/boundary-guard-x402.onrender.com/llms.txt)