flowchart LR
    subgraph host["Agent Exchange participant host"]
        requester["TurboDEX requester<br/>signs requests and verifies results"]
        provider["OSV provider<br/>signs bids, events, and receipts"]
        observer["Read-only observer<br/>projects verified envelopes"]
        verify["Local verification<br/>ES256K, replay, digest, length"]
    end

    subgraph node["Dedicated Logos Messaging and Storage node"]
        wss["Caddy WSS edge<br/>logos-waku-staging.pakana.net"]
        https["Caddy HTTPS edge<br/>logos-storage-staging.pakana.net"]
        delivery["Logos Delivery module<br/>Light Push, Filter, Store"]
        gateway["Agent Exchange Storage gateway<br/>bounded API and local CID index"]
        storage["Logos Storage module<br/>content-addressed blocks"]
        wss <--> delivery
        https <--> gateway
        gateway <--> storage
    end

    nwaku["nwaku service peer<br/>redundant transport"]
    stellar["Stellar TestNet<br/>settlement authority"]

    requester -- "1. signed AEP envelopes" --> wss
    provider -- "2. signed bids, events, receipts" --> wss
    wss -- "3. Filter live delivery" --> requester
    wss -- "3. Filter live delivery" --> provider
    wss -- "4. Filter plus Store recovery" --> observer

    requester -. "redundant Light Push and Filter" .-> nwaku
    provider -. "redundant publication" .-> nwaku
    nwaku -. "compatible Waku service" .-> observer

    provider -- "5a. result at most 64 KiB stays inline" --> wss
    provider -- "5b. POST larger result<br/>bearer, SHA-256, length" --> https
    https -- "6. verified CID metadata" --> provider
    provider -- "7. signed delivery receipt with CID" --> wss
    requester -- "8. public GET by CID" --> https
    https -- "9. restored bytes" --> verify
    wss --> verify
    verify --> requester

    requester -- "10. settlement evidence" --> stellar

    classDef participant fill:#e8f2ff,stroke:#245a8d,color:#102a43
    classDef logos fill:#e9f7ef,stroke:#287a4d,color:#173b2a
    classDef external fill:#fff4df,stroke:#9b6a15,color:#4b350c
    class requester,provider,observer,verify participant
    class wss,https,delivery,gateway,storage logos
    class nwaku,stellar external