Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/verified-zkevm/vcvio/program-logicgit clone --depth 1 https://github.com/Verified-zkEVM/VCVioWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00000 | $0.10939 |
| Opus 5 | $0.00000 | $0.05470 |
| Sonnet 5 | $0.00000 | $0.02188 |
| Haiku 4.5 | $0.00000 | $0.01094 |
Grade A, and why
program-logic scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 706 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Program Logic Tactics and Relational Reasoning
Current Module Boundary
- Import
VCVio.ProgramLogic.Tacticsfor normal proof work. This is the canonical user-facing proof mode. - Internally the tactic implementation is split into
VCVio.ProgramLogic.Tactics.UnaryandVCVio.ProgramLogic.Tactics.Relational; the umbrella import is still the intended default. VCVio.ProgramLogic.Notationprovides the core notation and convenience predicates used by the tactic surface.- Prefer the step-through tactics from
Tacticsfor new proofs. VCVio.ProgramLogic.Unary.StdDoBridgeis a narrow unary bridge for almost-sure correctness in the.pureStd.Doview. It is not the main engine for quantitative or relational VCGen.
For continuous or otherwise non-discrete denotations, import
VCVio.ProgramLogic.Relational.Measure. Its MeasureProgramLogic.RelWP uses an almost-everywhere
postcondition under a Mathlib Measure.Coupling, and eRelWP integrates quantitative
post-expectations with lintegral. The tactic proof mode below remains the finite, executable
compatibility layer while measure-native tactic support is developed.
In-Tree Walkthroughs
Examples/ProgramLogic/UnaryStep.lean: unaryvcstep/vcgenexamples.Examples/ProgramLogic/RelationalStep.lean: step-by-step relational tactic examples.Examples/ProgramLogic/RelationalDerived.lean: derived relational patterns and automation examples.Examples/ProgramLogic/ProofMode.lean: proof-mode entry points and small end-to-end examples.VCVio/ProgramLogic/Relational/Examples.lean: compact API examples for the relational layer.
Tactic Quick Reference
Proof Mode Entry
| Tactic | Goal shape | What it does |
|---|---|---|
by_equiv |
g₁ ≡ₚ g₂ or evalSPMF g₁ = evalSPMF g₂ |
Enters relational proof mode (RelTriple) |
game_trans g₂ |
g₁ ≡ₚ g₃ |
Splits into g₁ ≡ₚ g₂ and g₂ ≡ₚ g₃ |
by_dist |
AdvBound game ε |
Enters TV distance reasoning |
by_upto bad |
identical-until-bad TV-distance goals | Applies the simulateQ up-to-bad bound |
by_hoare |
Pr[p | oa] = ... |
Enters quantitative WP reasoning (legacy; prefer vcstep which lowers probability goals automatically) |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 706 lines · 0 tokens per session scan A 493e3a90103e
program-logic is an agent published in the GitHub repository Verified-zkEVM/VCVio (142 stars, last pushed 4d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 10,939 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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