Limits

Definition

Limits define what the engine accepts and rejects. They protect determinism, stability, and structural clarity.

Structural Limits

• All four fields must be present.
• No defaults, no inference, no auto‑completion.
• All fields must be deterministic strings.
• No arrays, no objects, no numbers.
• No semantic interpretation — only explicit structural reading.

Input Limits

• Minimum length per field: 10 characters.
• Maximum length per field: 2000 characters.
• All fields must be strings.
• No empty strings, no null values.

Request Limits

• Maximum body size: 50kb.
• Rate limit: 10 requests per minute per IP.
• Daily limit: 500 requests per IP.
• Valid x-basivis-key header required.

Security Model

• No storage — requests are not saved.
• No learning — no model adaptation or training.
• No memory — no session state or history.
• No cross‑request influence — every request is isolated.
• No hidden defaults — all behavior is explicit.
• No normalization — input is processed exactly as provided.
• No external calls — analysis is fully internal.

What Basivis Does Not Do

• No guessing.
• No semantic interpretation.
• No auto‑correction.
• No hidden transformations.
• No probabilistic behavior.

Examples

Valid

{
  "direction": "north movement with clear intent",
  "tragline": "structural backbone principle",
  "elements": "beam, joint, plate",
  "constraints": "limit:10 with no external pressure"
}

Invalid

{
  "direction": "short",
  "tragline": "",
  "elements": "beam",
  "constraints": "none"
}