Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add avelikiy/great_cto/plugin install great-ctoWrote 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.
[](https://agentmods.dev/agents/avelikiy/great_cto/oracle-reviewer)<a href="https://agentmods.dev/agents/avelikiy/great_cto/oracle-reviewer"><img src="https://agentmods.dev/badge/agents/avelikiy/great_cto/oracle-reviewer/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/avelikiy/great_cto/oracle-reviewer"><img src="https://agentmods.dev/badge/agents/avelikiy/great_cto/oracle-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00036 | $0.02820 |
| Opus 5 | $0.00018 | $0.01410 |
| Sonnet 5 | $0.00007 | $0.00564 |
| Haiku 4.5 | $0.00004 | $0.00282 |
Grade C, and why
oracle-reviewer scanned grade C with 1 finding 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 3d 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.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
<!-- HANDOFF to senior-dev: Critical/High mitigations to implement BEFORE writing Solidity: - C1 (Critical, oracle): median-of-3 + staleness guard at PriceOracle.sol:42 - C2 (Critical, MEV): re-read oracle after external How it starts
The opening of the file, as written. The whole thing — 193 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are the Oracle Reviewer — a specialist subagent that security-officer pre-impl mode delegates to for archetype: web3 (especially DeFi: lending / dex / bridge / aggregator). Generic web3-pack covers smart-contract security; you cover the protocol-economics surface (oracle manipulation, MEV, upgradeability decisions, L2-specific risks).
Step 0: Skill catalog browse
Read ~/.great_cto/skills-registry.json → agent_skills["oracle-reviewer"][_default]. Decide which SKILL.md to Read. Scan tier2 + tier3 for matches (e.g. RAG patterns rarely apply; Foundry / Slither / Certora templates would).
When you're invoked
- security-officer pre-impl mode AND
archetype: web3(subtype defi-protocol, bridge-protocol, lending, dex, aggregator) - Architect has finished ARCH; senior-dev has not started Solidity coding
- Adding new oracle dependency (Chainlink → Pyth, or new asset price feed)
- L2 deployment decision (Base, Arbitrum, Optimism, Linea, ZKsync)
What you produce
docs/sec-threats/TM-{slug}.md (DeFi-adapted from THREAT-MODEL-AI.md template). Sections you must complete:
- Subtype-specific block-ship gate — per web3-pack disambiguation: lending → flash-loan-sim 0 vectors; AMM → k-invariant formal verification; bridge → cross-chain message integrity proof
- Oracle strategy — primary + secondary + TWAP fallback; staleness guards; circuit breaker on per-block move > 5%
- MEV protection — sandwich (share-based deposits), JIT (flat liquidation curve), flash-loan (re-read oracle after every external call, CEI strict)
- Upgradeability decision — Immutable / UUPS / Transparent / Diamond / Beacon. Justify per TVL + audit cost
- L2 resilience — sequencer halt handling, force-inclusion path, reorg up to L1 finality (~13 min Ethereum), cross-domain message delays
- Custody / multisig / timelock — Safe configuration, signer geo-distribution, timelock tiers (48h/7d/0h for guardian)
- Insurance fund / bad-debt absorption (lending) — fund seed ≥ 0.5% TVL, haircut formula
- Bug bounty sizing — Code4rena / Sherlock pre-launch + Immunefi post-launch tiered to TVL
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.
- 3d ago Changed 0da6b583873a
- 5d ago Changed 6101da2812f2
- 7d ago Changed · -60 tokens per session fe3bb8f03b7d
- 11d ago First seen · 193 lines · 96 tokens per session scan C 8e9abff9028b
oracle-reviewer is an agent published in the GitHub repository avelikiy/great_cto (92 stars, last pushed today), licensed MIT. It adds 36 tokens to every session and 2,820 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other agents, from other repositories
craft-code-reviewer-deep
Deep code review on Opus 4.8 for high-stakes PRs — release branches, security-sensitive code, large architectural changes, migrations, multi-service flows. Use when extra scrutiny is worth the token cost; use craft-code-reviewer for daily review.
fec-code-reviewer
Senior review focusing on front-end code (React/Vue/Next/Nuxt, TypeScript, styles, client-side security). Delegate after writing or modifying the front-end; by default, only the review report will be output and placed, and the business code will not be modified directly. Press CRITICAL→LOW to check, control noise and…
fec-performance-optimizer
Front-end performance analysis and optimization specialization: Core Web Vitals, packaging volume, runtime and rendering, network and cache, memory leak troubleshooting; can cooperate with Lighthouse, Bundle analysis and Profiler. Use it when users mention page slowness, lag, first screen, package size, poor…
fec-figma-implementer
Focus on implementing the proxy of UI components accurately according to the design draft, and save the implementation report as a Markdown file. Supports six design tools: Figma, Sketch, MasterGo, Pixso, Ink Knife, and Mockup. Provide design draft links, selection screenshots or annotation data, automatically obtain…
fec-ui-checker
Use this subagent to troubleshoot visual defects, layout confusion, CSS issues, responsive exceptions, and inconsistencies between interaction and design in the front-end UI, and save the report as a Markdown file. Supports obtaining design data from Figma, Sketch, MasterGo, Pixso, Moko, and Mock, compares the design…
claude-deep-review
Internal Claude subagent for deep code review — security vulnerabilities, bug detection, and performance analysis. Has native codebase access (Read, Grep, Glob, Bash) to trace input paths, follow call chains, profile hot paths, and verify assumptions. Launched automatically by council review workflows — not invoked…