Hacktoberfest 2026:メンテナが10月に向けて印を付けた、オープンで初心者向けの issue。 Hacktoberfest の issue を見る

The MCP server's upstream call has no deadline and no error handling

クローズ
#349 コメント 2 件 リアクション 0 件 担当者 1 名 GitHub で見る

メンテナーはふだん 3 日以内に返信

@Wittig18 がすでに取り組んでいます。

2026年10月16日 から。

  • #452 @sparkysolutions10-pixel による — オープン

評価

この issue はまだ評価されていません。

説明

area:mcp difficulty:easy help wanted points:100 Stellar Wave
Background

src/mcp/server.ts:83 fetches an endpoint with no timeout and no status check.
MCP tools are called by agents, which typically have their own timeout and will
retry — so a hung call here becomes repeated hung calls, each holding a
connection, with no upper bound.

An agent is also the caller least able to interpret a malformed response: it
will take whatever shape comes back and reason over it, so a 502 HTML error page
parsed as JSON becomes a confident wrong answer in a conversation.

What to build
  • A deadline on the call, using the same helper as L162 if that has landed, or
    AbortSignal.timeout directly if not.
  • Check the response status and content type before parsing.
  • Return a structured MCP error on failure — a tool error the agent can act on,
    not a thrown exception or a half-parsed body.
  • Make the failure message say which upstream failed and why.
Acceptance criteria
  • The call cannot hang indefinitely
  • Non-2xx and non-JSON responses are rejected before parsing
  • Failures surface as structured MCP tool errors
  • The error names the upstream and the reason
  • Tests cover timeout, non-2xx and non-JSON responses

Drips Wave · Complexity: Easy · 100 points


Repo: Divinity-Labs/Lens. Node + TypeScript, Fastify, Prisma on Postgres,
Redis for queues, Prometheus via prom-client.

Run the tests: npm test. The tests are vitest, not jest. Running jest
against this repo reports "66 suites, 0 tests" and means nothing. A single file
is npx vitest run src/__tests__/yourfile.test.ts.

Load test (prices) is already failing on main and has been for some
time. It is not your PR that broke it. Every other check should be green.

This service prices real assets on Stellar mainnet. A number that is wrong
is worse than a number that is missing, because a caller cannot tell the
difference. Prefer failing loudly over returning a plausible value.

Never elide an address, a contract id or a key in code, a comment or a test
fixture.
A previous batch wrote a shortened contract id in an issue text and
five contributors invented plausible-looking ids to fill the gap. Write the
whole thing or do not write it at all.

The house pattern for an outbound deadline already exists — see
src/alerts/delivery.ts, which passes signal: AbortSignal.timeout(10_000) to
fetch. Where an issue below asks for a timeout, copy that, do not invent a
second convention.


Required: Before submitting, join the contributor Telegram so your work can be tracked and counted toward the Stellar Wave: https://t.me/+fxHXq8f1SwlkZDBk

主要言語
TypeScript
スター
4
フォーク
71
平均マージ
3日 15時間
マージ済み PR(30日)
157

環境構築

はじめの一歩

  1. issue を最後まで読み、次にプロジェクトのコントリビューションガイドを読みます。
  2. 着手することを issue にコメントします — 二人が同じ作業をするのを防げます。
  3. リポジトリをフォークし、ブランチを切って変更します。
  4. issue 番号を参照したプルリクエストを送ります。

Divinity-Labs/Lens のほかの issue

Divinity-Labs/Lens の issue をすべて見る

似ている issue

TypeScript の issue をもっと見る

新しい issue をメールで受け取る

初心者向けの GitHub issue を短くまとめたダイジェスト。