angel-one-mcp: Instructions file for Claude Code

CLAUDE.md

angel-one-mcp CLAUDE.md is an instructions file for Claude Code from ameernoufil/angel-one-mcp. It costs 725 tokens per session, scanned A, original, MIT.

Project instructions for an Angel One MCP server, which exposes the Angel One SmartAPI—an online stock-trading API—to AI assistants. They describe its TypeScript structure, commands, authentication, and order-safety code.

In plain words
What is it for?
Use them when developing, building, linting, or testing the angel-one-mcp project, or when modifying its API client, authentication, tools, guards, or configuration.
Why use it?
They give an agent the project facts and safety boundaries needed to change the server without guessing how its API calls, login flow, or order protections work.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is ameernoufil/angel-one-mcp's own configuration. It tells Claude Code how to work on angel-one-mcp 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 angel-one-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ameernoufil/angel-one-mcp. 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/ameernoufil/angel-one-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/ameernoufil/angel-one-mcp

Made for: Claude Code.

Wrote this? Show the measurements

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Per session 725 This file is loaded in full into every session.
When invoked 725 The same file — it is already loaded in full.
Security scan A 0 findings. 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 $0.00725 $0.00725
Opus 5 $0.00362 $0.00362
Sonnet 5 $0.00145 $0.00145
Haiku 4.5 $0.00072 $0.00072

Measured 10d ago against content hash 771d288dc064, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

angel-one-mcp CLAUDE.md scanned grade A with 0 findings 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 10d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Angel One MCP Server

Purpose

TypeScript MCP server that exposes Angel One SmartAPI as MCP tools for LLM clients.

What belongs here

Keep this file short and action-focused. Put stable project guidance here:

  • build/test commands
  • architecture facts
  • coding conventions
  • safety rules
  • common change workflow

Do not use this file for changelogs, release notes, marketing copy, or long setup docs.

Key Commands

npm install
npm run build
npm run lint
npm run lint:fix
npm run format
npm start
npm run dev

Run npm run build after code changes. Run npm run lint before finishing.

Architecture

  • No Angel One SDK packages. Use direct fetch() calls to https://apiconnect.angelone.in.
  • Entry point: src/index.ts
  • Env + safety limits: src/config.ts
  • API client, auth, token refresh: src/api.ts
  • Order safety guard: src/guards.ts
  • Shared types/errors: src/types.ts
  • TOTP generation: src/totp.ts
  • Tool registration barrel: src/tools/index.ts
  • Tool groups live in src/tools/

Core Behavior

  • Server uses stdio transport via @modelcontextprotocol/sdk.
  • Auth is lazy: first API call can trigger login.
  • TOTP is generated from ANGEL_TOTP_SECRET.
  • Token refresh is handled in API layer.
  • Credentials stay in API/config layer. Tool layer should only receive SafetyConfig where needed.

Coding Conventions

  • TypeScript strict mode. Preserve strong typing.
  • Use ESM imports/exports.
  • Use @/ path aliases. Do not add relative imports from . or ...
  • Prefer import type for type-only imports.
  • Do not use any.
  • Do not use non-null assertions.
  • Keep changes small and consistent with existing file patterns.
  • Put shared validation/business logic in helpers or API/guard layers, not duplicated across tools.

Tool Design Rules

  • Register tools with server.registerTool(...).
  • Define or extend request/response types in src/types.ts when needed.
  • Keep tool handlers thin: parse input, call API/helper, shape output.
  • Put Angel endpoints and HTTP behavior in src/api.ts, not inside tool files.
  • If adding a new tool group file, register it in src/tools/index.ts.

Read the full file on GitHub · 97 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. 10d ago First seen · 97 lines · 725 tokens per session scan A 771d288dc064

Subscribe to this mod's changes

angel-one-mcp CLAUDE.md is an instructions file published in the GitHub repository ameernoufil/angel-one-mcp (0 stars, last pushed 3mo ago), licensed MIT. It adds 725 tokens to every session, about $0.0036 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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