gitea-mcp: 初次落地 Gitea MCP Server (.NET 10, V1 only-read)
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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>
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using GiteaMcp.Config;
using Microsoft.Extensions.Options;
namespace GiteaMcp.Endpoints;
/// <summary>
/// OAuth 2.0 Authorization Server MetadataRFC 8414)端点。
/// Claude.ai 在接入 custom connector 时会先访问 /.well-known/oauth-authorization-server
/// 根据返回的元数据找到 nas-auth 的 authorize / token / register 端点。
/// </summary>
public static class DiscoveryEndpoints
{
public static IEndpointRouteBuilder MapDiscovery(this IEndpointRouteBuilder app)
{
app.MapGet("/.well-known/oauth-authorization-server", (IOptions<McpDiscoveryOptions> opts) =>
{
var o = opts.Value;
return Results.Ok(new
{
issuer = o.Issuer,
authorization_endpoint = o.AuthorizationEndpoint,
token_endpoint = o.TokenEndpoint,
registration_endpoint = o.RegistrationEndpoint,
response_types_supported = new[] { "code" },
grant_types_supported = new[] { "authorization_code", "refresh_token" },
code_challenge_methods_supported = new[] { "S256" },
scopes_supported = new[] { "read:gitea" },
});
});
return app;
}
}