Signal Core

Signal Core compresses context before agents read your code. It sends structural skeletons (signatures, types, imports) instead of full file dumps. Savings depend on how your files are shaped: small stubs save less; large source files with long bodies save more.

At a glance

• tree-sitter parsing extracts structure on the read path (8+ languages)
• signal_core = true in pytxo.toml turns scaffolding on for task paths
• signal_fidelity (low | medium | high) controls how much structure per task
• Savings are recorded per run; Pytxo Desktop Topology Focus shows a token-savings indicator when samples exist
• Import edges between files show up in Topology Focus during runs

Configuration

signal_core = true
signal_fidelity = "low"   # default; per-task override in [[task]]

Signal fidelity is a context tier, separate from permission tiers.

MCP reads

Tools pytxo_read and pytxo_read_scaffolded return skeletons instead of raw files when Signal Core is on. Useful from Cursor without dumping a full checkout.

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