lex_api/
lib.rs

1//! M8: agent API server. Spec §12.3.
2//!
3//! HTTP/JSON server exposing the same operations as the CLI. The server
4//! is stateful (it owns a `Store` instance) so agents don't pay sandbox
5//! startup cost per request.
6//!
7//! Endpoints:
8//!   POST /v1/parse           { source } → CanonicalAst | [SyntaxError]
9//!   POST /v1/check           { source } → { ok: true } | [TypeError]
10//!   POST /v1/publish         { source, activate? } → [{ stage_id, sig_id, status }]
11//!   POST /v1/patch           { stage_id, patch, activate?, branch?, intent? } → { new_stage_id, op_id, ... }
12//!   POST /v1/transform       { branch, intent?, transform: {kind, ...} } → { op_id, new_head, ... } (see `transform_http`)
13//!   GET  /v1/stage/<id>      → { metadata, ast, status }
14//!   GET  /v1/stage/<id>/attestations → { attestations: [Attestation] }
15//!   POST /v1/run             { source, fn, args, policy } → { run_id, output | error }
16//!   GET  /v1/trace/<run_id>  → TraceTree
17//!   POST /v1/replay          { source, fn, args, policy, overrides } → { run_id, output | error }
18//!   GET  /v1/diff?a=&b=      → Divergence | { divergence: null }
19//!   POST /v1/merge/start              { src_branch, dst_branch } → { merge_id, conflicts, ... }
20//!   POST /v1/merge/<id>/resolve       { resolutions: [...] } → { verdicts, remaining_conflicts }
21//!   POST /v1/merge/<id>/commit        → { new_head_op, dst_branch } | 422 conflicts remaining
22//!   POST /v1/ops/batch                [OperationRecord] → { received, added, skipped, added_ids }
23//!   POST /v1/attestations/batch       [Attestation] → { received, added, skipped, added_ids }
24//!   GET  /v1/branches/<name>/head     → { branch, head_op } (probe for `lex op push`)
25//!   POST /v1/blobs/missing            { ids } → { missing } (#1007)
26//!   POST /v1/blobs/batch              [{ id, data_b64 }] → { received, added, skipped }
27//!   POST /v1/blobs/fetch              { ids } → { blobs: [{ id, data_b64 }] }
28//!   GET  /v1/health          → { ok: true, caps: ["files-v1", "intent-origin-v1"] }
29//!
30//! Web (lex-tea v2, read-only HTML; human-only audit + triage):
31//!   GET  /                      → activity stream (recent attestations)
32//!   GET  /web/attention         → exceptions queue (Failed / Inconclusive,
33//!                                 stale merge sessions)
34//!   GET  /web/trust             → per-producer rollup (pass rate, latest
35//!                                 failure)
36//!   GET  /web/branches          → branch list
37//!   GET  /web/branch/<name>     → fns on a branch (detail)
38//!   GET  /web/stage/<id>        → stage info + attestation trail (detail)
39
40pub mod handlers;
41mod branches_http;
42pub mod review_http;
43mod sync_http;
44mod ops_since_http;
45/// Derived issue/project state (#949 phase 3). `pub` so lex-hub can wrap the
46/// handlers with owner-session auth for the console, as it does for
47/// [`review_http`].
48pub mod issues_http;
49mod publish_examples;
50/// The typed-transform write surface (#837 piece A): `POST /v1/transform`,
51/// and the shared `apply_transform` that `lex ws transform` also calls.
52pub mod transform_http;
53mod web;
54pub mod mcp;
55
56/// Re-exported so embedders can build a [`handlers::State::policy_ceiling`]
57/// without taking a direct dependency on `lex-runtime`.
58pub use lex_runtime::Policy;
59
60use std::path::PathBuf;
61use std::sync::Arc;
62
63pub fn serve(port: u16, store_root: PathBuf) -> anyhow::Result<()> {
64    let server = tiny_http::Server::http(("127.0.0.1", port))
65        .map_err(|e| anyhow::anyhow!("bind failed: {e}"))?;
66    let state = Arc::new(handlers::State::open(store_root)?);
67    serve_on(server, state);
68    Ok(())
69}
70
71/// MCP server (#171). Same `State` shape as the HTTP server,
72/// stdio transport instead of TCP. Designed for hosts that
73/// spawn `lex serve --mcp` as a subprocess and pipe JSON-RPC
74/// over stdin/stdout.
75pub fn serve_mcp_stdio(store_root: PathBuf) -> anyhow::Result<()> {
76    let state = Arc::new(handlers::State::open(store_root)?);
77    mcp::serve_mcp(state)?;
78    Ok(())
79}
80
81/// Test/embedded entry: takes an already-bound `Server` and runs until it
82/// stops accepting requests. Returns immediately when the `Server` is
83/// dropped on another thread.
84pub fn serve_on(server: tiny_http::Server, state: Arc<handlers::State>) {
85    for request in server.incoming_requests() {
86        let state = Arc::clone(&state);
87        let _ = handlers::handle(state, request);
88    }
89}
lex_api/lib.rs

lex_api/
lib.rs
