Adds a parallel read-only API surface alongside wallet_*:
chain_tx_info full Koios tx_info (any hash)
chain_address_info balance + utxos at any address
chain_pool_list filter by ticker / pool_id_bech32
chain_pool_info detail per pool (delegators, blocks)
chain_epoch_params protocol params for an epoch
chain_asset_info supply, holders, mint history
chain_account_info stake address state
chain_tip current chain tip
All passthrough — Koios JSON returned verbatim, no re-shaping.
Network-aware via existing ALDABRA_KOIOS_BASE; mainnet vs preprod
just changes the URL. No keys touched, no signing path. Saves
the bash-curl friction Cobb flagged 2026-05-05 mid-mainnet
testing arc.
Wire-up: KoiosClient gets `post_raw_json` + `get_raw_json`
helpers that return raw response strings instead of decoding
into typed structures. The chain_* tools are thin wrappers
around those.
ServerInfo `instructions` updated to advertise the chain_*
surface alongside wallet_*.
Kayos
ffdafc2028