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gitea-mcp: 初次落地 Gitea MCP Server (.NET 10, V1 only-read)
把 Gitea (git.zhengchentao.win) 通过 MCP 暴露给 Claude.ai:列 repo、读代码、看 commits / issues / PR / orgs / packages / actions。
设计文档见 vault Coding/gitea-mcp/gitea-mcp 设计.md。
代码模板复用 obsidian-mcp(.NET 10 + ModelContextProtocol SDK + JwtBearer)。

19 个只读 Tool(全部 scope=read:gitea):

Repo / 文件:
- list_repos / read_repo
- list_tree(max_entries=500 防爆)
- read_file(max_bytes=1MB,超出 truncated=true)
- search_code(走 /repos/search-code,indexer 未启用时返回结构化错误说明)

分支 / 提交:
- list_branches / list_commits / read_commit(diff 文件数限 50)

Issue / PR:
- list_issues / read_issue(含评论)
- list_pulls / read_pull(含评论 + 改动文件列表)

Org / Package(用户额外授权 read:organization + read:package):
- list_orgs / read_org
- list_packages / read_package

Gitea Actions(运维友好):
- list_workflow_runs / read_run_log

技术栈:
- .NET 10 + ModelContextProtocol SDK 1.0
- HttpClientFactory + Microsoft.Extensions.Http.Resilience(指数 backoff,5xx/429/网络错误重试)
- JwtBearer (HS256, Current+Previous fallback, MapInboundClaims=false)
- aud=gitea, scope=read:gitea, iss=https://auth.zhengchentao.win

Gitea API client:
- Authorization: token <PAT> (admin PAT,仅 read scope)
- BaseUrl=https://git.zhengchentao.win
- 错误映射:401/403 → UnauthorizedAccessException,404 → KeyNotFoundException,5xx → InvalidOperationException
- RepoBlacklist 黑名单(owner/repo 精确匹配,默认空)

部署:
- Dockerfile multi-stage,COPY --chown,non-root user
- .gitea/workflows/build-image.yml:build + deploy 双 job,buildkit v0.13.2
- 容器内 :8080,宿主端口 9092
- 子域名 git-mcp.zhengchentao.win(区别于 Gitea 本体 git.zhengchentao.win)

测试:6/6 单测过(GiteaRepoFilter 黑名单匹配)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-06 01:32:42 +08:00

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using GiteaMcp.Auth;
using GiteaMcp.Config;
using GiteaMcp.Endpoints;
using GiteaMcp.Services;
using Microsoft.Extensions.Http.Resilience;
using System.Net;
using System.Net.Http.Headers;
var builder = WebApplication.CreateBuilder(args);
// ─── 配置绑定 ───────────────────────────────────────────────
builder.Services.Configure<GiteaOptions>(
builder.Configuration.GetSection(GiteaOptions.SectionName));
builder.Services.Configure<JwtOptions>(
builder.Configuration.GetSection(JwtOptions.SectionName));
builder.Services.Configure<McpDiscoveryOptions>(
builder.Configuration.GetSection(McpDiscoveryOptions.SectionName));
// ─── JWT Bearer + Scope Policy ─────────────────────────────
builder.Services.AddGiteaJwtBearer(builder.Configuration);
builder.Services.AddScopePolicies();
// ─── HTTP Context AccessorTool 里可选用,暂保留接口) ────────
builder.Services.AddHttpContextAccessor();
// ─── Gitea HTTP Client ─────────────────────────────────────
var giteaBaseUrl = builder.Configuration["Gitea:BaseUrl"]
?? "https://git.zhengchentao.win";
var giteaPat = builder.Configuration["Gitea:AdminPat"] ?? string.Empty;
builder.Services.AddHttpClient("gitea", client =>
{
// 确保 BaseAddress 末尾有斜杠(HttpClient 的规范)
var url = giteaBaseUrl.TrimEnd('/') + "/";
client.BaseAddress = new Uri(url);
// Gitea 推荐 "token <PAT>" 格式,比 Bearer 更稳
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("token", giteaPat);
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
// 单请求超时 30s
client.Timeout = TimeSpan.FromSeconds(30);
})
.AddStandardResilienceHandler(options =>
{
// 3 次重试,指数退避(Microsoft.Extensions.Http.Resilience 标准配置)
options.Retry.MaxRetryAttempts = 3;
options.Retry.BackoffType = Polly.DelayBackoffType.Exponential;
options.Retry.Delay = TimeSpan.FromSeconds(1);
options.Retry.UseJitter = true;
// 仅对 5xx / 429 / 网络错误重试;4xx 由 ShouldHandle 默认配置自动跳过
options.TotalRequestTimeout.Timeout = TimeSpan.FromSeconds(90);
options.AttemptTimeout.Timeout = TimeSpan.FromSeconds(30);
});
// ─── 业务服务 ──────────────────────────────────────────────
builder.Services.AddSingleton<GiteaRepoFilter>();
builder.Services.AddScoped<GiteaApiClient>();
// ─── MCP Server ────────────────────────────────────────────
builder.Services.AddMcpServer()
.WithHttpTransport() // Streamable HTTPClaude.ai custom connector 走这个)
.WithToolsFromAssembly(); // 自动扫描 [McpServerToolType]
// ─── Build ─────────────────────────────────────────────────
var app = builder.Build();
// ─── Middleware 顺序:认证 → 授权 → 路由 ────────────────────
app.UseAuthentication();
app.UseAuthorization();
// ─── Endpoints ─────────────────────────────────────────────
app.MapDiscovery();
// MCP 端点:要求通过 JWT 认证 + read:gitea scope
app.MapMcp("/mcp")
.RequireAuthorization(ScopePolicies.ReadGitea);
// 健康检查(Kubernetes / Docker healthcheck 用)
app.MapGet("/healthz", () => Results.Ok(new { status = "ok", timestamp = DateTimeOffset.UtcNow }));
app.Run();