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My version of https://github.com/vercel-labs/fx
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116const std = @import("std");const build_options = @import("build_options");const acp_server = @import("acp/server.zig");const js_host_stream_provider = @import("gateway/js_host_stream_provider.zig");const context_contract = @import("core/workspace/context_contract.zig");const gateway_provider = @import("core/gateway/gateway_provider.zig");const provider_set = @import("core/gateway/provider_set.zig");const host = @import("core/hosts/host.zig");const io_mod = @import("core/shared/io.zig");const model_catalog = @import("core/gateway/model_catalog.zig");const js_host_model_catalog = @import("gateway/js_host_model_catalog.zig");const oauth_transport = @import("core/auth/oauth_transport.zig");const output_contracts = @import("core/output/output_contracts.zig");const builtin_gateway = @import("builtins/gateway.zig");const provider_catalog = @import("core/auth/provider_catalog.zig");const vercel_model_policy = @import("gateway/vercel_model_policy.zig");const builtin_modes = @import("builtins/modes.zig");
const Allocator = std.mem.Allocator;
comptime { if (build_options.wasm_surface != .core) { @compileError("fx-core requires -Dwasm-surface=core"); }}
pub const panic = @import("core/hosts/wasm_panic.zig").panic;
pub fn main(init: std.process.Init) !void { io_mod.setIo(init.io); io_mod.setEnvironMap(init.environ_map); try acp_server.run(std.heap.c_allocator, .{ .default_model = builtin_gateway.default_model, .default_agent_step_limit = 64, .gateway_retry_count = 0, .gateway_chat_url = builtin_gateway.default_chat_url, .gateway_models_path = builtin_gateway.models_path, .gateway_provider = js_host_gateway_provider, .provider_set = js_host_provider_set, .secret_store = host.unavailable_secret_store, .prompt_policy = .{ .system_prompt = "" }, .ignored_list_entries = &.{}, .max_list_entries = 0, .max_read_file_bytes = 0, .max_read_file_lines = 0, .max_read_file_line_len = 0, .max_command_output_bytes = 0, .max_tool_result_bytes = 64 * 1024, .max_history_turns = 100, .context_registry = .{ .default_provider = context_contract.empty_provider }, .mode_registry = builtin_modes.registry, .credential_override = io_mod.getenv("AI_GATEWAY_API_KEY"), .model_override = io_mod.getenv("FX_MODEL"), .workspace_root_override = "/", .allow_acp_mcp = false, .allow_native_tools = false, .minimal_kernel = true, });}
const js_host_gateway_provider = gateway_provider.Provider{ .oauth_transport = oauth_transport.unavailable_provider, .chat_url = .{ .resolve_fn = resolveChatUrl },};
const js_host_provider_set = provider_set.gateway_only(.{ .presentation = provider_catalog.find(.gateway), .auth_strategy = .vercel, .fallback_model_capabilities_fn = vercel_model_policy.capabilitiesForModel, .agent_stream = js_host_stream_provider.provider(), .cli_model_catalog = .{ .fetch_fn = fetchCliModelCatalog }, .model_catalog = js_host_model_catalog.provider, .credits = .{ .fetch_fn = fetchCredits },});
fn resolveChatUrl(_: ?*anyopaque, fallback: []const u8) []const u8 { return fallback;}
fn fetchCliModelCatalog( _: ?*anyopaque, alloc: Allocator, input: gateway_provider.CliModelCatalogInput,) gateway_provider.CliModelCatalogResult { const result = model_catalog.fetchWithPublicFallback(js_host_model_catalog.provider, alloc, .{ .access = input.access, .endpoint = input.endpoint, .cancel_flag = input.cancel_flag, .view = .full, }); return switch (result) { .loaded => |loaded| project: { var catalog = loaded.catalog; defer model_catalog.freeModelCatalog(alloc, &catalog); const ids = model_catalog.projectModelIds(alloc, catalog.items) catch return .{ .failure = .{ .access = loaded.provenance.access, .anonymous_fallback_used = loaded.provenance.anonymous_fallback_used, .failure = .{ .category = .resource_exhausted }, } }; break :project .{ .loaded = .{ .ids = ids, .provenance = loaded.provenance, } }; }, .failed => |failed| .{ .failure = failed }, };}
fn fetchCredits( _: ?*anyopaque, _: Allocator, _: gateway_provider.CreditsLookupInput,) output_contracts.CreditsSnapshot { return .{};}