oracle-comp

oracle-comp is an agent for coding agents from Verified-zkEVM/VCVio. It costs 0 tokens per session (4,785 once invoked), scanned A, original, Apache-2.0.

A Lean definition for describing which response type belongs to each kind of oracle query. It also connects those descriptions to polynomial functors and free monads, which are reusable patterns for modeling computations.

In plain words
What is it for?
Use it when defining typed oracle queries, combining oracle specifications, or connecting oracle computations with polynomial-functor and free-monad machinery.
Why use it?
It gives dependent oracle code clear expected types while preserving access to general mathematical abstractions. This avoids converting data just to move between the two representations.

Agent

Install

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.

agentmods
npx agentmods add agents/verified-zkevm/vcvio/oracle-comp
Clone the repo
git clone --depth 1 https://github.com/Verified-zkEVM/VCVio

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for oracle-comp

README.md
[![agentmods](https://agentmods.dev/badge/agents/verified-zkevm/vcvio/oracle-comp.svg)](https://agentmods.dev/agents/verified-zkevm/vcvio/oracle-comp)
Your own site
<a href="https://agentmods.dev/agents/verified-zkevm/vcvio/oracle-comp"><img src="https://agentmods.dev/badge/agents/verified-zkevm/vcvio/oracle-comp.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,785 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.04785
Opus 5 $0.00000 $0.02393
Sonnet 5 $0.00000 $0.00957
Haiku 4.5 $0.00000 $0.00479

Measured 5d ago against content hash dad0fd9bbd0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

oracle-comp 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 5d 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.

docs/agents/oracle-comp.md · 320 lines

How it starts

The opening of the file, as written. The whole thing — 320 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OracleComp, SubSpec, and SimSemantics

OracleSpec

An oracle specification maps index types to response types:

def OracleSpec (ι : Type u) : Type _ := ι → Type v

Concretely, spec t is the response type at query index t : ι. OracleSpec ι is the B-component of a polynomial functor with position type A := ι; spec.toPFunctor packages the two together, and OracleSpec.ofPFunctor is its inverse (both rfl-invertible). This is the connection that makes OracleComp a free monad: see OracleComp below.

OracleSpec remains a parameterized family rather than becoming a structure alias for PFunctor: function application and the Domain / Range façade give dependent oracle code useful expected types, while toPFunctor exposes the generic algebra without a data conversion. In particular, spec₁ + spec₂ is definitionally the direction family of PFunctor.sum spec₁.toPFunctor spec₂.toPFunctor. The PFunctor coproduct uses the primitive dependent Sum.rec, and the OracleSpec HAdd instance is left at its ordinary instance_reducible status. Ranges of nested .inl / .inr queries therefore normalize during instance and implicit checking without forcing the same unfolding during ordinary tactic matching.

When a handler only needs one side of a combined specification, prefer QueryImpl.restrictLeft or QueryImpl.restrictRight to an annotated lambda. The combinators preserve the component handler type explicitly and come with application lemmas.

Constructor Notation Example
Singleton spec A →ₒ B Bool →ₒ Fin 6
Empty spec []ₒ No oracles
Combined specs spec₁ + spec₂ unifSpec + (M →ₒ C)

Required typeclass instances for probability reasoning:

  • [spec.Fintype] — all response types are Fintype
  • [spec.Inhabited] — all response types are Inhabited

Without both, evalSPMF, probOutput, and Pr[...] will fail with confusing typeclass errors.

Read the full file on GitHub · 320 lines

Changes

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.

  1. 5d ago First seen · 320 lines · 0 tokens per session scan A dad0fd9bbd0f

Subscribe to this mod's changes

oracle-comp is an agent published in the GitHub repository Verified-zkEVM/VCVio (144 stars, last pushed yesterday), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 4,785 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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