Council · Sigil

SIGIL — the agent language

Sovereign Inter-aGent Interchange Language. A compact, deterministic, token-efficient protocol for AI agents to talk to each other — with a lossless human-readable translator.

Why SIGIL exists

When 36 council agents need to agree on a cert decision, you can't ship JSON (verbose, ambiguous, no audit trail). SIGIL is one line, deterministic, and every line is auditable. The canonical Python package is meok-sigil on PyPI; this page is an in-browser demo.

1 · Encode

Input (JSON)

SIGIL line

// (click Encode)

2 · Parse + verify

SIGIL line (input above)

// (encode first)

Decoded (JSON)

// (click Parse)

SIGIL reference

boolean true: +

boolean false: -

abstain: ~

string: key="value"

number: key=42

escape: \\"

The full SIGIL grammar lives in meok-ai/meok-sigil and on PyPI as meok-sigil.