#ada

Cardano's on-chain governance actions (proposals) of the Conway era — live from the public Koios indexer, no key. Anyone can submit a governance action — a treasury withdrawal, a protocol-parameter change, a hard-fork initiation, a new constitutional committee, a no-confidence motion — which DReps, stake pools and the constitutional committee then vote on. The Cardano DRep reader surfaces the voters; this is the other side of governance: the proposals themselves. List the governance actions with their type, deposit, return address and the lifecycle epochs they were proposed / ratified / enacted / dropped / expired, with a derived status; read a proposal's live voting tally broken down by the three governance bodies — DRep, SPO and committee Yes / No / Abstain vote counts, voting power (in ADA) and percentages; and read the individual votes cast on it, each with the voter's role and decision. The governance-action layer for Cardano wallets, voting tools, governance explorers and analytics. Distinct from the DRep governance reader (the voters), the stake-pool reader, the chain-economics reader and the native-token registry. Live from the indexer; short cache only.

api.oanor.com/cardanoproposals-api

Cardano's stake-pool operators (SPOs) — live from the public Koios indexer, no key. Cardano is delegated proof-of-stake: ADA holders delegate to stake pools run by independent operators, who mint blocks and earn rewards. The Cardano account reader resolves which pool a single stake account delegates to, but there is no registry of the pools themselves. This opens it. List every pool the chain knows with its operator margin, fixed cost and pledge; look up one pool in full — its registered identity (ticker, name, homepage, description) from off-chain metadata plus its on-chain economics: live delegated stake, saturation, delegator count, lifetime blocks and status; and read a pool's Mark / Set / Go stake snapshots, the three-epoch pipeline Cardano uses to compute rewards. The operator layer for Cardano wallets, staking dashboards, pool explorers and analytics. Distinct from the Cardano account reader (per-account delegation), the chain-economics reader, the native-token registry and the DRep governance reader. Live from the indexer; short cache only.

api.oanor.com/cardanopools-api

Cardano's on-chain governance body — the DReps (Delegated Representatives) of the Voltaire era / CIP-1694 — live from the public Koios indexer, no key. In the Conway era ADA holders delegate their voting power to DReps, who vote on governance actions; the Cardano account reader resolves a single stake account's DRep choice, but there is no registry of the DReps themselves. This opens it. List every DRep with its registration and native-script status; look up one DRep in full — its live delegated voting power (the ADA whose vote it casts), its 500 ADA registration deposit, whether the mandate is still active and the epoch it expires; read the governance actions a DRep has voted on with each Yes / No / Abstain decision; and track the network-wide DRep population and total active voting power per epoch. The governance layer for Cardano wallets, voting tools, DRep explorers and analytics. Distinct from the Cardano account reader (per-account vote), the chain-economics reader and the native-token registry. Live from the indexer; short cache only.

api.oanor.com/cardanodreps-api

Cardano native tokens, live from the public Koios API — no key, nothing cached. On Cardano every token is a "native asset" identified by a policy id plus an asset name, minted under a Plutus or native minting policy. The Cardano on-chain reader lists the tokens held by an account, but there is no token registry in the marketplace; this opens it. Browse the verified token registry — the curated tokens that have submitted off-chain metadata, with their ticker, decimals, description and logo. Look up a single token in full with its on-chain facts: the asset fingerprint, total supply, how many times it has been minted and burned, and when it was first created. And list every native asset minted under a given policy id — one policy can mint a single fungible token or a whole NFT collection. The token layer for Cardano wallets, DEXs, token explorers and analytics. Live from api.koios.rest.

api.oanor.com/cardanotokens-api

Read live Cardano chain economics and epoch data from the public Koios indexer — no key — focused on the network-wide view that stake-account and asset readers miss. The tip endpoint returns the chain head: the current epoch, block height and slot. The epoch endpoint returns any epoch's activity — blocks produced, total transactions, total output and fees (in ADA) and the active stake securing it, with its start and end. And the supply endpoint returns Cardano's ADA monetary breakdown: total supply, circulating, reserves (still to be issued), treasury (the on-chain governance fund) and the reward pot, against the fixed 45-billion-ADA cap. The chain-economics layer every Cardano wallet, explorer, staker and analytics tool needs. Live from the indexer; short cache only.

api.oanor.com/cardanochain-api

Live on-chain data from the Cardano blockchain (ADA) via the public Koios indexer. Resolve a stake account's whole state — total ADA controlled, UTxO balance, the stake pool it delegates to, its DRep governance vote, lifetime and withdrawable staking rewards, and registration status. Fetch the native tokens and NFTs a stake account holds, with policy id, decoded asset name, fingerprint and decimal-adjusted quantity. Read a stake pool's live economics — ticker, active and live stake, live saturation, margin, fixed cost, pledge, blocks minted and delegator count. Get the live chain tip and current-epoch active stake, transaction count and fees. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, EVM and Solana on-chain APIs and from price feeds — this is Cardano stake-account state, delegation, native-asset holdings, stake-pool economics and epoch health. Perfect for wallets, explorers, staking dashboards, delegation tools, NFT and analytics apps.

api.oanor.com/cardano-api

ADA wheelchair-ramp maths as an API, computed locally and deterministically — the run, landing and slope numbers a builder or accessibility planner sizes a ramp by. The rule the ADA fixes is 1 inch of rise per 12 of run, a maximum 8.33 % slope, so the ramp endpoint turns a rise into the ramp: run = rise × 12 (or × 16 / × 20 for a gentler grade if you have the room), plus the level landings the code requires — a 5-foot landing top and bottom and another between runs whenever the rise exceeds 30 inches — and the total length end to end, so a 24-inch rise needs a 24-foot run and 34 feet overall, while a 36-inch rise breaks into two runs with an intermediate landing for 51 feet. The fit endpoint answers the real-world question: does a ramp for this rise fit the run you have? It returns the minimum run an ADA 1:12 ramp needs, whether your space is enough, and the slope you would actually get if you forced it in — flagging when that exceeds 8.33 % and you need a switchback or a lower rise. Everything is computed locally and deterministically, so it is instant and private. Ideal for construction, accessibility, home-modification and contractor app developers, ramp-estimator and code-check tools, and building software. Pure local computation — no key, no third-party service, instant. Confirm against current ADA and local code. Live, nothing stored. 2 compute endpoints.

api.oanor.com/adaramp-api