Any API,
on chain.

Pick a destination from the library, or define your own from any HTTP API.

method   : POST
url      : api.example.com/{path}
headers  : { ... }
params   : { ... }
returns  : { ... }

One line. Send the params, receive a typed response — call it like any other function.

// one call: params in, typed response out
let resp = chord::slack_post_message(SlackPostMessageParams {
  channel: "#liquidations".into(),
  text:    format!("Position {id} liquidated · {amt} SOL"),
})?;
// resp: SlackPostMessageResponse { ok: true, ts: "1714…" }

The oracle listens, runs the HTTP request, and writes the typed result back on-chain. Sub-second round-trip.

on-chain   emit!(ActionRequested { slug, params_json });
              ▼
oracle     POST hooks.slack.com  →  200 OK · 142ms
              ▼
on-chain   emit!(TaskCallback { request_id, result_json });
           → SlackPostMessageResponse { ok: true, ts: "1714…" }