What it is
JIT-Context is a deterministic, sub-3ms runtime memory engine for autonomous coding agents with tool execution access. It compiles high-density Context Capsules from AST maps, tool proofs, and local Obsidian vaults, reducing agent turns and blind file exploration.
How it uses Jev
Jev acts as a sub-millisecond System 1 Epistemic Gate and Domain Router. It scores AST relevance, test proofs, and tool targets based on the agent's state. The result is used to filter context and route decisions, cutting agent turns and blind file exploration, with fail-open circuit-breaker resilience.
Primitives:score
Technique worth stealing
Use deterministic tool feedback (exit codes, hashes) as Authority 1.0 ground truth to discard speculative monologue.
Try it
claude mcp add jit-context python3 src/mcp_server.py
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricyes0.62
- Shows a System One patternyes0.81
- Handles uncertaintyyes0.73
- Measuredyes0.92
- Runnableno0.31
- Worth recommendingno0.22
- Model replicano0.27
- Problem scopescore on a 0–2 scale1.77
- About Jevyes0.81
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 23 Sept 2026.