# Cairo Oracles

> Explain Cairo oracles for offloading computation in executables, oracle::invoke, and constraints for soundness; use when a request involves experimental oracles or external computation in Cairo.

- Skill: `teddyjfpender/cairo-oracles` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add teddyjfpender/cairo-oracles`
- Raw SKILL.md: https://api.skillmd.com/api/skills/teddyjfpender/cairo-oracles/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: teddyjfpender (https://skillmd.com/u/teddyjfpender)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/teddyjfpender/cairo-oracles

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# Cairo Oracles

## Overview
Explain how to offload computations to external oracles in Cairo executables and constrain results.

## Quick Use
- Read `references/oracles.md` before answering.
- Emphasize oracles are experimental and not available in Starknet contracts.
- Always show constraints that validate oracle outputs.

## Response Checklist
- Use `oracle::invoke(connection, selector, inputs)` returning `oracle::Result<T>`.
- Connection strings typically use `stdio:` to spawn a process.
- Assert constraints immediately after oracle calls.
- Run executables with `scarb execute --experimental-oracles`.

## Example Requests
- "How do I call an oracle from Cairo?"
- "Why must I validate oracle outputs?"
- "Can oracles be used in Starknet contracts?"