Business processes and AI agents need structured on-chain data through open standards. ODATANO abstracts Cardano and Midnight as OData V4 Services. Query chain states, build transactions and verify claims against live contract states. Anchor records publicly on Cardano and prove facts about them privately on Midnight.
# 1 read the chainGET …/cardano/Transactions('cf8e5cc9…') ?$expand=inputs,outputs# 200 { "fee": "166293", "inputs": […], "outputs": […] }# 2 build a transactionPOST …/cardano-transaction/BuildSimpleAdaTransaction { "senderAddress": "addr_test1…", "recipientAddress": "addr_test1…", "lovelaceAmount": 10000000 }# 200 { "unsignedTxCbor": "84a4…", "fee": 171001 }# 3 same routes on Midnight, hosted or self-hostedGET …/odata/v4/midnight/Blocks/latest()
ODATANO CORE for Cardano, NIGHTGATE for Midnight. Use one or both together
Blocks, addresses, UTxOs, Pools, DReps and more as OData entities. ADA and multi-asset transfers, mints, metadata and Plutus spends as actions.
Blocks and contract state as entities. Shielded transfers, Compact contract calls, document anchoring and zero-knowledge attestations as actions, sponsored so no NIGHT or DUST is needed.
The hosted ODATANO API at api.odatano.dev. One key covers both chains and the analytics. OData clients call the routes directly, AI agents go through the two MCP servers. The first key comes with free calls.
Blocks, transactions, UTxOs and pools as OData. Build and submit transactions.
Blocks and contract state on Midnight. Attestations and zero-knowledge proofs, transactions sponsored.
Analytics, computed from the same indexes. Blocks, transactions and fees per hour, day or week, with the change against the window before. Every number names the block range it came from.
analytics_* tools in both MCP servers ODATANO sits between business applications and the chain. ODATANO CORE connects to Cardano, NIGHTGATE to Midnight. Both handle data providers, caching, indexing and transaction building, so the application only sees OData.
Consumer
Both services expose their chain as OData V4 entities and actions.
$filter, $select, $expand
and $orderby work as in any OData service, metadata at $metadata. Hosted and self-hosted serve the same paths.
@odatano/core
Blocks, transactions, addresses, UTxOs, pools, DReps and protocol parameters as OData entities. 22 entities, 19 actions.
ADA, multi-asset, mint and Plutus V3 transactions as OData actions. Unsigned CBOR back. 13 actions.
CIP-30 wallet, Cardano CLI or PKCS#11 HSM. Private keys never reach the server. 9 actions.
Optional chain crawler with sync cursor, reorg log and pause / resume. 2 entities, 4 operations.
Server-side wallets run build, sign, submit and confirm as jobs. 2 entities, 6 actions.
Scoped, budgeted bearer tokens for AI agents instead of a full user. 1 entity, 6 actions.
@odatano/nightgate
Crawler indexes Midnight blocks with reorg detection. Wallet sessions in worker threads, viewing key or full signing.
Deploy and call Compact contracts, send NIGHT and custom tokens. Async jobs with status polling.
ZK attestations prove a hidden value meets a threshold. Document anchoring with on-chain verification, shield and unshield funds.
Sync status, reorg history, liveness, Prometheus metrics, reindex. 2 entities, 11 operations.
Block, transaction and contract counts as OData aggregates. 2 entities, 4 functions.
Wallet sessions, disclosure roles, contract registry. Two verify functions public, rate limited.
Two MCP servers: @odatano/core-mcp for Cardano,
@odatano/nightgate-mcp for Midnight. Both use one
oda_… key from api.odatano.dev. The agent
gets a notary, never a wallet: it reads, builds and verifies, a
human or an HSM signs. Both carry the ODATANO ASTRA analytics for
their chain: key figures, daily tables, rankings. Works with Claude
Code, Claude Desktop, Cursor or any MCP client.
36 tools plus 10 for analytics. Read the chain, query the indexer, build transactions. Every build comes back unsigned, a human or wallet signs.
get_transaction get_utxos get_asset_info query_entity build_ada_transfer build_mint_transaction build_plutus_spend create_signing_request verify_signature submit_signed_transaction get_submission_status analytics_key_figures analytics_daily analytics_top analytics_anomalies 22 tools plus 9 for analytics. Anchor documents, prove claims over hidden fields, verify against live contract state. Writes are sponsored or scoped by a grant.
verify_attestation verify_predicate verify_document prove_field_predicate prove_field_equality prove_field_membership anchor_document attest_agent_output prepare_document_proof grant_disclosure revoke_disclosure get_job_status analytics_key_figures analytics_daily analytics_compare analytics_anomalies npx @odatano/core-mcpnpx @odatano/nightgate-mcp# .mcp.json - Claude Code / Claude Desktop / Cursor / any MCP client# one key from api.odatano.dev, both chains{ "mcpServers": { "odatano": { "command": "npx", "args": ["-y", "@odatano/core-mcp"], "env": { "ODATANO_ACCESS_KEY": "oda_…" } }, "nightgate": { "command": "npx", "args": ["-y", "@odatano/nightgate-mcp"], "env": { "ODATANO_ACCESS_KEY": "oda_…" } }}}# self-hosted instead: ODATANO_ACCESS_URL points at your own instance
Applications and libraries built on @odatano/core for Cardano
and @odatano/nightgate for Midnight: product passports, supply-chain
traceability, financial data anchoring, payment gating, a zero-knowledge
toolkit and transaction monitoring.
Digital battery passports anchored on Cardano as CIP-25 NFTs. Sensitive data stays encrypted off-chain. Merkle proofs disclose single fields, Groth16 predicates prove thresholds like carbon footprint on the Cardano ledger itself.
The shielded twin of DAYPASS on Midnight, built on @odatano/nightgate. One dataset, three stakeholder views. Sensitive metrics are proven with ZK attestations, the values stay hidden.
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The chain-agnostic core of DAYPASS and NIGHTPASS. Canonical hashing, encryption, access levels, Merkle content trees, lifecycles and ZK claim planning. No chain code, no network calls. A passport anchored on one chain verifies against data from the other.
Tracks pharmaceutical batches from manufacturer to distributor to pharmacy with NFTs under a Plutus V3 policy. Each handoff anchors certificates and cold-chain telemetry on-chain.
On-chain settlement of B2B raw-material orders against attested inventory and Charli3 oracle price feeds. A custom Plutus V3 minting policy enforces inventory, price ceiling, payment, and deadline atomically.
Anchors balance sheets and income statements on Cardano as CIP-10 label-1447 metadata, following the Cardano Foundation Reeve spec. Verifiable accounting without a smart contract.
Payment gating for SAP CAP. Gated OData endpoints return HTTP 402 until the caller proves on-chain settlement. No database, no smart contract: the UTxO model is the replay defense.
Pure-TypeScript zero-knowledge toolkit behind DAYPASS. Groth16 proving and verification plus Poseidon hashing on BLS12-381, no native dependencies.
Watches addresses, credentials and policies on Cardano and emits UTxO events with replay. Confirms that what your ERP recorded is what the chain settled.
npm install @odatano/core npm install @odatano/nightgate npx @odatano/core-mcp npx @odatano/nightgate-mcp Questions, an integration or a custom build. Send a message, we reply by email.