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flare-ftso

Provides integration guidance for consuming Flare Time Series Oracle price feeds onchain and offchain.

Updated Aug 10, 2026
Search Tags:#blockchain#oracle#web3#solidity#price feeds#flare#ftso
One-click install
npx skills add https://github.com/isreal916/pistis --skill flare-ftso-isreal916
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: flare-ftso
Source: https://github.com/isreal916/pistis/tree/main/.agents/skills/flare-ftso
Command: npx skills add https://github.com/isreal916/pistis --skill flare-ftso-isreal916

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires web3, @flarenetwork/flare-periphery-contract-artifacts, and includes scripts (resource) and references (resource) components.

What problem does it solve? Developers building on Flare need accurate, up-to-date knowledge of the FTSO oracle's feed IDs, contract interfaces, fee mechanics, and verification patterns to integrate decentralized price feeds without hardcoding addresses or misusing payable methods. ## Core Features & Use Cases - Feed Consumption Patterns: Explains how to read block-latency and Scaling anchor feeds via FtsoV2Interface in Solidity, offchain with web3/ethers, and in React frontends using wagmi and @flarenetwork/flare-wagmi-periphery-package. - Feed IDs and Fee Calculation: Documents the 21-byte feed ID encoding, common crypto/USD feed IDs, and fee calculation via IFeeCalculator for payable calls. - Anchor Feed Verification: Covers Merkle proof verification of Scaling feeds with verifyFeedData, plus volatility incentives and delegation concepts. - Use Case: A developer building a DeFi app on Flare uses this Skill to resolve the FtsoV2 contract via ContractRegistry, read BTC/USD and ETH/USD feeds in a single call, and compute a cross-pair BTC/ETH price. ## Quick Start Ask the assistant to show how to read the FLR/USD price feed from the Flare FTSO in a Solidity contract on Coston2 testnet.

Frequently Asked Questions about flare-ftso

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I read FTSO price feeds in a Solidity contract?▼

Resolve the FtsoV2 contract via ContractRegistry (getTestFtsoV2 on Coston2, getFtsoV2 on mainnet), then call getFeedById or getFeedsById with the 21-byte feed ID. Never hardcode the FtsoV2 address, and set the EVM version to cancun when compiling.

How to read Flare FTSO feeds offchain with JavaScript?▼

Use web3 or ethers with @flarenetwork/flare-periphery-contract-artifacts to get the FtsoV2 ABI, resolve the contract address via ContractRegistry's getContractAddressByName, and call getFeedsById over the Flare RPC endpoint. The skill includes a complete TypeScript example script.

What is the difference between block-latency and Scaling anchor feeds?▼

Block-latency feeds update every block (~1.8 seconds) via incremental delta updates from VRF-selected providers and are free to query onchain. Scaling anchor feeds use a full commit-reveal process across all providers every 90 seconds and can be verified onchain with Merkle proofs.

Can I use FTSO feeds in a React frontend with wagmi?▼

Yes, use @flarenetwork/flare-wagmi-periphery-package which exports chain configs, ABIs, and the ContractRegistry address. Resolve the FtsoV2 address with useReadContract, then call getFeedByIdInWei and format the 18-decimal result with viem's formatUnits.

Does this skill execute transactions or handle private keys?▼

No, this skill is documentation and reference only. It does not execute transactions, sign messages, or handle private keys; all fee payments, volatility incentives, and delegation require explicit user confirmation in developer-controlled environments.

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