Worlds

A world is X07’s capability profile: it defines what resources a program can touch.

This is one of the most important design choices for agent reliability.

Two world families

1) Fixture worlds (deterministic)

Used for:

• unit tests
• deterministic replay
• benchmarking
• automated repair loops

Capabilities are backed by fixtures:

• filesystem trees
• request/response cassettes
• seeded key/value stores
• virtual time

2) OS worlds (nondeterministic)

Used for:

• production programs
• real disk/network/time/process access

OS worlds are always opt-in, and sandboxed variants are governed by explicit policy.

World matrix

• solve-pure: pure bytes → bytes, no I/O
• solve-fs: deterministic read-only fixture FS
• solve-rr: deterministic fixture-backed request/response
• solve-kv: deterministic seeded KV store
• solve-full: combination of deterministic fixture capabilities
• run-os: real OS adapters (disk/net/time/env/process)
• run-os-sandboxed: policy-limited OS adapters

See:

• Fixture worlds
• OS worlds