supra-push-oracle
Supra S-Value push oracle on Hedera. Use when reading getSvalue price feeds on Hedera (testnet 296 / mainnet 295), mapping pair IDs, converting millisecond timestamps to unix seconds, or quoting USDT pairs where USD is unavailable.
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- 457
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/hedera-dev/hedera-skills --skill supra-push-oracle- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads supra-push-oracle automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Supra Push Oracle (Hedera)
Push S-Value pattern: Supra updates an on-chain feed; readers call getSvalue(pairId) and must reject empty, zero, or stale quotes.
Supra push oracle → getSvalue(pairId) → consumer
Consumers may wrap the feed behind a local interface; that is optional. Do not assume a project-specific adapter name.
Quick Reference
| Piece | Role |
|---|---|
| Push oracle | Immutable ISupraSValueFeed address for the network |
| Pair ID | Numeric Supra pair id (not an EVM aggregator address) |
| Read | getSvalue(pairId) → price, decimals, time |
| Time | Often milliseconds on Hedera — convert when time > 1e10 |
| Quote asset | Hedera feeds are often USDT, not USD |
| Freshness | Compare unix seconds to a max staleness |
Hedera chain IDs: testnet 296, mainnet 295.
See references/hedera-feeds.md for where to source push-oracle addresses and pair IDs. See references/examples.md for read sketches.
Critical: Millisecond Timestamps
Supra time on Hedera is frequently milliseconds. Treat values > 10_000_000_000 as ms and convert before staleness checks:
uint256 updatedAt = pf.time > 10_000_000_000 ? pf.time / 1_000 : pf.time;
if (block.timestamp - updatedAt > maxStaleness) revert StalePrice(updatedAt, maxStaleness);
Comparing a millisecond timestamp to block.timestamp (seconds) will look “in the future” or skip staleness incorrectly.
Critical: USDT Pairs On Hedera
Current Hedera Supra feeds often quote USDT, not USD. Pair keys / symbols must match the actual quote (HBAR/USDT, BTC/USDT). Do not label a USDT feed as USD.
Completeness And Invalid Prices
Revert when:
| Condition | Why |
|---|---|
pf.time == 0 | No successful update |
pf.price == 0 | Invalid price |
| Stale after converting to seconds | Older than maxStaleness |
| Unknown pair ID | Do not return zero |
Normalize pf.price with pf.decimals to the consumer scale (often 18).
Checklist
When implementing or reviewing Supra reads on Hedera:
- Push-oracle address and pair IDs taken from Supra Hedera docs (not Ethereum)
- Timestamps converted to unix seconds when they look like milliseconds
- Pair symbols match the real quote asset (often USDT)
- Zero / missing updates revert
- Staleness bound is enforced in seconds
- Decimals normalized to the consumer scale
References
- references/examples.md —
getSvalueand timestamp sketches - references/hedera-feeds.md — where to source push-oracle addresses and pair IDs
- Supra push oracle networks
- Supra data feeds index
FAQ
What does the supra-push-oracle skill do?
Supra S-Value push oracle on Hedera. Use when reading getSvalue price feeds on Hedera (testnet 296 / mainnet 295), mapping pair IDs, converting millisecond timestamps to unix seconds, or quoting USDT pairs where USD is unavailable.
How do I install supra-push-oracle?
Run npx skills add https://github.com/hedera-dev/hedera-skills --skill supra-push-oracle in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/supra-push-oracle/ (personal) or .claude/skills/supra-push-oracle/ (project).
Which AI agents can use supra-push-oracle?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is supra-push-oracle safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains supra-push-oracle?
It is published by hedera-dev in hedera-dev/hedera-skills. It has 457 recorded installs.
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