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 rules/comet-ml/opik/agentsgit clone --depth 1 https://github.com/comet-ml/opikWhat 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 | $0.00350 | $0.00350 |
| Opus 5 | $0.00175 | $0.00175 |
| Sonnet 5 | $0.00070 | $0.00070 |
| Haiku 4.5 | $0.00035 | $0.00035 |
Grade A, and why
agents 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 yesterday.
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.
What it actually says
Agent Deployment
Domain Routing
apps/opik-backend/**→ Backend skillapps/opik-frontend/**→ Frontend skillsdks/opik_optimizer/**→ Opik Optimizer skillsdks/python/**→ Python SDK skillsdks/typescript/**→ TypeScript SDK skilltests_end_to_end/**→ Playwright E2E skill
Frontend Structure
apps/opik-frontend/src/v2/→ the Opik UI (layout, pages, pages-shared)- The legacy
src/v1/tree was removed in OPIK-7105; V2 is the only experience - Shared layers: ui/, shared/, api/, types/, store/, hooks/, lib/, constants/, contexts/, plugins/
- Shared components must not be version-aware (no
isV2props)
Task Approach
- Complex features → Plan before implementing
- Bug fixes → Reproduce with test first
- Multi-component → Coordinate across domains
Execution
- Independent tasks → Run in parallel
- Use thinking model (Opus, GPT 5.3, GPT 5.3 High) for: complex planning, security, architecture
- Use fast model (Haiku, GPT Nano, GPT Codex Low/Medium) for: simple test runs, formatting
Formatting and Linting
- For local verification and PR iterations, run
pre-commiton changed files, not repository-wide file lists. - Avoid
--all-filesunless a cleanup migration explicitly requires repository-wide normalization.
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.
- yesterday First seen · 34 lines · 350 tokens per session scan A 1e9dbd2c1674
agents is a cursor rule published in the GitHub repository comet-ml/opik (21,685 stars, last pushed yesterday), licensed Apache-2.0. It adds 350 tokens to every session, about $0.0018 per session on Opus 5. 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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