mcp-tui: Instructions file for Codex

AGENTS.md

mcp-tui AGENTS.md is an instructions file for Codex, OpenCode from standardbeagle/mcp-tui. It costs 3,848 tokens per session, scanned A, original, MIT.

Instructions for mcp-tui, a terminal interface for discovering and connecting to MCP servers. MCP servers provide tools that an AI assistant can call.

In plain words
What is it for?
Use them when changing server discovery, configuration parsing, connection screens, tabs, keyboard focus, or automatic connections.
Why use it?
They document the interface, supported configuration formats, keyboard navigation, validation, and connection behavior so changes match the current design.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions AGENTS.md.

This is standardbeagle/mcp-tui's own configuration. It tells Codex and OpenCode how to work on mcp-tui itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-tui configures →

Reuse

Borrowing it

Nothing to install: this file belongs to standardbeagle/mcp-tui. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/standardbeagle/mcp-tui/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/standardbeagle/mcp-tui

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Per session 3,848 This file is loaded in full into every session.
When invoked 3,848 The same file — it is already loaded in full.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.03848 $0.03848
Opus 5.5 $0.01539 $0.01539
Sonnet 5.5 $0.00770 $0.00770
Haiku 4.5 $0.00385 $0.00385

Measured 1mo ago against content hash b59641dc7220, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-tui AGENTS.md scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- 以 curl 驗 HTTP/SSE server;查 CLI timeout 是否干涉;確 stdio command 過 validation。
AGENTS.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

此檔示 coding agents 於本倉作業之準則。規則詳見 .claude/rules/;項目概要見 .claude/CLAUDE.md;術語見 .claude/rules/glossary.md。

Project Overview

MCP-TUI,Go 製 Model Context Protocol (MCP) servers 測試客戶端;兼 interactive TUI (bubbletea) 與 scriptable CLI (cobra)。支 stdio、SSE、streamable HTTP transports;可 browse/execute tools、resources、prompts,應 sampling、elicitation、roots,行 OAuth,並以 verify/conform 驗 server 合規。發佈為 release binaries 及 @standardbeagle/mcp-tui npm wrapper。

Agent Setup

  • 本倉不直配 MCP servers(無 .mcp.json,settings 無 mcpServers)。Agent 所需 MCP 皆經 slop-mcp。
  • examples/*.json 為 mcp-tui 之輸入樣本,非 agent 配置。
  • Task 系統:worktrack。dartai 已廢。

Development Commands

凡 test/build 皆經 tman(.tman.kdl;aliases 映 CI jobs):

./build          # go build -o bin/mcp-tui .
./test           # go test ./... -timeout 15m   (CI "test")
tman race        # go test -race ./internal/... -timeout 20m   (CI "race")
tman vet         # go vet ./...
tman lint        # golangci-lint v2.13.2,經 go run 釘版,毋全域裝   (CI "lint")
make ci          # vet + fmt-check + lint + test + race
  • 敗則讀 .tman/<alias>.fail.log,毋重跑全套。
  • 整合測試需 npx(server-everything)與 pwsh;CI 設 MCP_TUI_REQUIRE_PWSH=1,缺 pwsh 則敗而非略。
  • gofmt 與 lint 皆為 CI 閘;lint 須 0 issues。nolint 唯用於誤報或改之反損可讀,必附具體理由;勿為藏 issue 而升 .golangci.yml 之閾。

Architecture

main.go                  cobra root;註 tool/task/resource/prompt/server/capabilities/verify/conform
internal/cli/            subcommands (cmd_*.go, tool.go);base.go 共 connection flags;oauth_flags.go 註 --oauth-*
  conform/ verify/       規格情景與安全探針(conform 之 verify 情景取自 verify.AllProbes)
internal/mcp/            service layer(service.go)包 go-sdk client
  mrtr.go mrtr_elicit.go 自行之 multi round-trip 迴圈(SDK 迴圈停用),每輪記錄
  list_cache.go          SEP-2549 list cache 觀測;handshake_trace.go 記版本協商
  resource_subscriptions.go server_log_level.go traceparent.go tasks.go message_log.go ...
  protocol/              葉包:StatelessVersion(2026-07-28)判定
  inputschema/           tool inputSchema 經 $ref、T|null 解析(CLI 與 TUI 共用)
  tasks/                 MCP tasks 二 wire form;sdk.go 為唯一觸 SDK 內部之檔
  wiretap/               唯一觀線處:stdio/in-memory 包 connection,HTTP 經 RoundTripper 讀 request/response body(含 SSE),stdio 另逐行讀 stdout 以見 SDK decoder 所拒之行;tasks link 與 protocol watcher 為其 Observer
  protocolwatch/         判 server 違 JSON-RPC 2.0/所協商版本之訊息(無主 id、重複回應、未定義 method、非 JSON-RPC);method 表在 protocol/methods.go
  transports/            factory.go 依 TransportType 造 SDK transport;context.go 定 context strategy
  oauth/ sampling/ elicitation/ roots/ notifications/ session/ ...
internal/redact/         唯一去敏模組:headers、URLs、bodies、錯誤文、MCP payloads
internal/tui/            app/(app.go、manager.go)、screens/、models/(connections.go:file discovery)、components/
internal/config/         config 解析、ValidateCommand
internal/debug/          logger、buffer、httptrace.go(HTTP 追蹤)、slog.go(SDK slog 橋)、errors.go(具名錯誤碼)
                         internal/mcp/debug 有 event tracer 與 replay
internal/platform/signal 跨平台 signal handling
internal/testutil/       listener、pwsh helpers、streamable HTTP server、TaskServer
test-servers/            故障 MCP servers(crash、timeout、oversized…)供韌性測試
docs/                    Astro docs site(dev.standardbeagle.com)

Read the full file on GitHub · 131 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed · -101 lines · +1,819 tokens per session b59641dc7220
  2. 2mo ago First seen · 232 lines · 2,029 tokens per session scan A 66fd2301f4fc

Subscribe to this mod's changes

mcp-tui AGENTS.md is an instructions file published in the GitHub repository standardbeagle/mcp-tui (12 stars, last pushed 5d ago), licensed MIT. It adds 3,848 tokens to every session, about $0.0154 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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