#yield

Live detail and full APY/TVL history for any DeFi yield pool, keyless. Unlike current-yield screeners, this is the per-pool time dimension: look up a pool by its id for its current APY (base + reward), TVL, risk flags and forecast, then pull its APY and TVL over time to judge whether a headline yield is sustainable or a fading incentive. Search 15,000+ pools by token, project or chain to find a pool id. Live, nothing stored. The yield-history layer for farming, allocation, backtesting and risk apps — distinct from current-yield lists, this tracks a single pool yield through time.

api.oanor.com/yieldpool-api

Live protocol metrics for Convex Finance, the yield-booster built on top of Curve (it lets liquidity providers and CRV holders earn boosted rewards), keyless. Get the total value locked, the boosted Curve yield pools with their TVL and APY (base + rewards), per-chain TVL, and protocol fees and revenue. One combined overview endpoint snapshots it all. Live, nothing stored. The yield-aggregator metrics layer for DeFi dashboards, yield, farming and analytics apps — distinct from DEX, lending, restaking and generic DeFi/TVL browsers, this is Convex Curve-boosted yield specifically.

api.oanor.com/convex-api

Live protocol metrics for Aave, the largest decentralized lending protocol, keyless. Get the total value locked across every chain Aave is deployed on, the per-asset lending markets with their supply APY (base + rewards), 30-day average and TVL across Aave v3 / v4, and protocol fees. One combined overview endpoint snapshots it all. Live, nothing stored. The Aave-metrics layer for DeFi dashboards, yield, lending and risk apps — distinct from DEX and generic DeFi/TVL browsers, this is Aave lending markets specifically, multi-chain.

api.oanor.com/aave-api

The supply and borrow rates of on-chain money markets, compared across every major DeFi lending protocol and chain at once — live from DeFiLlama, no key. The same asset earns and costs a different rate on every protocol and every chain: USDC might pay 3% to supply on Aave v3 Ethereum and cost a fraction to borrow somewhere else, and those rates move every block. A single protocol's reserves are only part of the picture; what a lender or borrower wants is the cross-protocol, cross-chain comparison. This API joins DeFiLlama's pool yields with its lend/borrow dataset into one money-market table: for every lending reserve it gives the supply APY (base + reward), the borrow APY (base + reward), the utilisation, the loan-to-value and the dollar size of the supplied and borrowed pools. The markets endpoint returns the full table (filter by asset, chain, protocol, stablecoin, minimum size); the best endpoint returns the top venues to supply an asset (highest APY) or to borrow it (lowest APY) right now; the asset endpoint summarises one asset across all its markets — the min, max, average and median supply and borrow APY, plus the single best place to lend and to borrow. Ranking surfaces exclude DeFiLlama-flagged outlier pools and impossible (>100%) utilisation, so the best rate is a real, harvestable one. The cross-protocol money-market-rates cut — distinct from TVL analytics (which size protocols, not their rates), single-protocol lending APIs (one venue each), and perpetual funding-rate APIs (a different rate entirely).

api.oanor.com/lendingrates-api

Live lending-market data from Solend (now Save), the leading Solana money market, over its public API — no key, nothing stored. This is the Solana lending view: every asset in the main pool with its supply and borrow APY, utilisation, value supplied and value borrowed, distinct from the other DeFi, DEX and lending APIs in the catalogue — Solend is an on-chain money market on Solana. The markets endpoint lists every asset with its live rates, utilisation and TVL, ranked by value supplied. The asset endpoint returns one asset by its symbol — its supply and borrow APY, utilisation, oracle price and the dollar value supplied and borrowed. The summary endpoint aggregates the pool: total value supplied and borrowed, asset count, the overall utilisation and the largest markets. Build DeFi lending dashboards, yield comparators, borrow-rate monitors and risk tools on top of real Solend data. Rates are live supply/borrow APYs and USD values are derived from on-chain reserve amounts and oracle prices; look up an asset by symbol (SOL, USDC).

api.oanor.com/solend-api

Live concentrated-liquidity DEX data from Orca, the leading Solana CLMM exchange, over its public Whirlpools API — no key, nothing stored. This is the Solana on-chain liquidity view: every Whirlpool with its value locked, trading volume, price and the yield earned by liquidity providers, distinct from the aggregator, AMM and other DeFi APIs in the catalogue — Orca is concentrated-liquidity (Uniswap-V3-style) on Solana. The pools endpoint lists Whirlpools, optionally filtered by token and ranked by value locked or 24h volume, each with its pair, price, fee tier, volume and APR. The pool endpoint returns one Whirlpool in full by its on-chain address — including 7-day and 30-day volume, weekly and monthly APR, the fee APR, tick spacing and token mints. The summary endpoint aggregates the DEX: total value locked, 24h volume, pool count and the top pools by liquidity and by volume. Build Solana DeFi dashboards, LP yield scanners, liquidity monitors and trading tools on top of real Orca data. Filter by token symbol (SOL, USDC); APR and fee rates are returned as percentages and only pools above $1k TVL are listed.

api.oanor.com/orca-api

Live liquidity-pool and yield data for the Frax Finance ecosystem — the FRAX stablecoin, frxETH and FXS — from the public Frax API, no key, nothing stored. This is the Frax-yield view: every incentivised Frax liquidity pool across every chain and DEX, with its locked liquidity and APY, distinct from the generic DeFi-yield and protocol APIs in the catalogue. The pools endpoint lists Frax pools — optionally filtered by chain or DEX platform — with the trading pair, the pool tokens, the value locked and the base and maximum APY. The pool endpoint returns one pool in full, including the reward breakdown across swap fees and incentive rewards. The summary endpoint aggregates the ecosystem: total value locked, the pool count and the distribution across chains and DEX platforms, plus the highest-yielding pools. Build DeFi yield dashboards, Frax-farming optimisers, APY trackers and treasury tools on top of real Frax Finance data. Filter by chain (ethereum, arbitrum, fraxtal, optimism, polygon and more) or platform (uniswap_v3, curve, convex, balancer); pool APYs are returned as percentages.

api.oanor.com/frax-api

Live data from Kamino Finance, the largest lending and automated-liquidity protocol on Solana. Kamino's lending market lets users supply and borrow SOL, stablecoins and major SPL tokens, while its automated vaults run concentrated-liquidity strategies on Solana DEXs. The reserves endpoint returns every lending reserve on the main market — supply and borrow APY, total supplied and borrowed (USD), utilization and max LTV. The reserve endpoint returns one asset by symbol. The overview endpoint returns the protocol's aggregate supplied, borrowed and TVL. The vaults endpoint returns the top automated liquidity vaults by TVL with their token pair and APY. Read live from Kamino, nothing stored. This is Kamino's own Solana lending and liquidity-vault layer — distinct from Ethereum lending (Morpho), liquid staking and DEX/price feeds.

api.oanor.com/kamino-api

Live DeFi data from Pendle Finance — the protocol for yield tokenisation — served from its public API as clean JSON, no cache. Pendle splits a yield-bearing asset into a Principal Token (PT, redeemable 1:1 at maturity, a fixed-yield instrument) and a Yield Token (YT, the streaming yield), traded in an AMM market that expires on a fixed date. List the active markets on a chain with each market's liquidity, implied APY (the fixed rate a PT buyer locks in), aggregated and max-boosted APY, maturity date and PT/YT/SY token addresses (sorted by liquidity); fetch one market's full detail by address; rank the highest implied-APY markets with a liquidity floor; or list the chains Pendle runs on. Read live from Pendle, nothing cached. This is Pendle's own yield-tokenisation, fixed-yield and PT/YT-market layer — distinct from on-chain explorers, DEX-pool feeds, yield-vault and price APIs.

api.oanor.com/pendle-api

Live DeFi yield-vault data from Yearn Finance — the long-running yield aggregator — served from its public yDaemon API as clean JSON, no cache. Yearn vaults auto-compound strategies to earn yield on a deposited token, each reporting its TVL, net APR (after fees) and underlying strategies. List the active vaults on a chain with TVL, net APR, category and underlying token (sorted by TVL); fetch one vault's full detail by address including its strategies; rank the highest-yielding vaults by net APR with a TVL floor to exclude dust; or list the chains Yearn runs on. Read live from Yearn, nothing cached — vaults with broken legacy price oracles or shut-down/hidden status are filtered out. This is Yearn's own vault, APR and strategy layer — distinct from on-chain explorers, DEX-pool feeds and price APIs: protocol-level yield data for the original DeFi yield aggregator.

api.oanor.com/yearn-api

Live results and schedule of US Treasury debt auctions, served from the US Treasury's FiscalData API — no key, nothing cached. Every Treasury bill, note, bond, TIPS and FRN is sold at auction, and the results are the market's clearest read on demand for US government debt. The auctions endpoint returns the most recent auctions — bills, notes, bonds and more — each with its CUSIP, security type and term, auction and issue dates and offering amount. The results endpoint returns the recently completed auctions with the numbers that matter: the high yield or discount rate, the bid-to-cover ratio (how many dollars were bid for each dollar offered — the headline demand gauge, around 2.5 for a healthy 20-year bond), the interest rate and the price. The security endpoint returns the full detail of one auctioned security by its CUSIP. Everything is the Treasury's own published auction data, live, nothing stored. This is the Treasury-auction layer for any fixed-income, rates, macro or research app. Distinct from debt-level and yield-curve APIs — this is the auction calendar and results: what the Treasury sold, at what yield, and how strong the demand was. 3 endpoints, no key on our side.

api.oanor.com/treasuryauctions-api

Chemical reaction-stoichiometry maths as an API, computed locally and deterministically. The limiting-reagent endpoint takes two reactants with their amounts in moles and their balanced-equation coefficients and finds which one runs out first — the limiting reagent — by comparing the moles/coefficient ratio (the reaction extent), and returns how much of the excess reagent is left over. The yield endpoint computes the theoretical yield of a product, in moles and grams, from the limiting reagent and the product's stoichiometric coefficient and molar mass, n_product = n_limiting·(coeff_product/coeff_limiting), and — given the actual yield — the percent yield. The mole-mass endpoint converts between moles, mass and the number of particles for a given molar mass, using moles = mass / molar_mass and N = moles · Avogadro's number (6.02214076e23). Amounts are in moles, masses in grams and molar masses in g/mol. Everything is computed locally and deterministically, so it is instant and private. Ideal for chemistry-education, lab, pharmaceutical and chemical-engineering app developers, reaction-planning and yield tools, and STEM teaching. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is reaction stoichiometry; for a compound's molar mass from its formula use a molar-mass API and for solution concentrations a dilution API.

api.oanor.com/stoichiometry-api