Regarding application / Ledger API access

Hi Team,

I’m integrating a Canton dApp with the Participant JSON Ledger API (HTTP /v2/...), not gRPC-only. Could you share the following?

1. JSON Ledger API

• Base URL that serves GET /v2/version
• Confirm JSON HTTP is exposed (not gRPC-only)
• Network: DevNet / TestNet / MainNet
• Daml SDK / LF version this Participant runs (we currently build DARs for SDK 3.4.11, LF 2.2)

2. Auth
Bearer JWT or OAuth2 client-credentials (token URL, client id, client secret, audience, scope).
Token lifetime / how to refresh.

3. Ledger user
userId for prepare/execute. Confirm if that is the JWT sub.
Does GET /v2/authenticated-user work with this token?

4. External Parties
Can this user call:
POST /v2/parties/external/generate-topology
POST /v2/parties/external/allocate

After I allocate a Party, how do I get CanActAs and CanReadAs for that Party on this user? (App tokens often cannot call POST /v2/users/{id}/rights.)

5. Packages
Who may upload DARs (POST /v2/dars vs Admin API vs console), and how vetting is done on this Participant?

6. Synchronizer
Synchronizer ID, or confirm GET /v2/state/connected-synchronizers is allowed — and which entry is the global one if several are listed.

7. Interactive submission + browser
Confirm POST /v2/interactive-submission/prepare and /execute.
CORS for a browser origin, or should we reverse-proxy?

Thanks,

Hi!
You need to ask all those details from your node provider/hoster.

@Kiryl_NODERS Thanks for your response .

I actually tried using NAAS as well and reached out to several validators/node providers, including Kaleido, Validation Cloud, Blockdaemon Validator, and 5North Validator. However, I haven’t received a response from any of them yet.

If you could help me get the required information or connect me with any node provider, it would be a great help. I’d really appreciate your support.

Thanks again for your time.

Actually we(at NODERS) provide NAAS as well, and could help you getting the node with all the harness for development.
Please hit me on mrlp4@noders.team for details.

sure @Kiryl_NODERS mailed you regarding details . please check on mentioned mail address.