schwab-mcp AGENTS.md

schwab-mcp AGENTS.md is an instructions file for Codex, OpenCode from Tapojit/schwab-mcp. It costs 1,708 tokens per session, scanned A, original, MIT.

Repository instructions for a read-only MCP server that connects coding tools to Charles Schwab account and market data.

In plain words
What is it for?
Use them when developing or testing tools for quotes, market hours, account details, price history, orders, transactions, and technical indicators.
Why use it?
They explain the project structure, authentication, build process, and the limits of its read-only design.

Instructions file for CodexOpenCode

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/tapojit/schwab-mcp/agents-md
Clone the repo
git clone --depth 1 https://github.com/Tapojit/schwab-mcp

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for schwab-mcp AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/tapojit/schwab-mcp/agents-md.svg)](https://agentmods.dev/instructions/tapojit/schwab-mcp/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/tapojit/schwab-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/tapojit/schwab-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,708 This file is loaded in full into every session.
When invoked 1,708 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.01708 $0.01708
Opus 5 $0.00854 $0.00854
Sonnet 5 $0.00342 $0.00342
Haiku 4.5 $0.00171 $0.00171

Measured 4d ago against content hash 9b64ad2a672f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

schwab-mcp AGENTS.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 4d 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.

AGENTS.md · 219 lines

How it starts

The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repository Guidelines

Project Structure

src/
  index.ts                    # CLI entry point (commander)
  server.ts                   # SchwabMCPServer class, MCP SDK integration
  client.ts                   # SchwabClient — authenticated fetch wrapper
  auth.ts                     # OAuth2 browser flow (local HTTPS callback)
  tokens.ts                   # Token load/save/refresh, credentials management
  resources.ts                # MCP resource definitions (order statuses)
  types.ts                    # TypeScript types from OpenAPI schemas
  tools/
    index.ts                  # registerTools() aggregator
    utils.ts                  # Shared helpers (date parsing, formatResult)
    market.ts                 # get_datetime, get_market_hours, get_movers, get_instruments
    accounts.ts               # Account and preferences tools (6 tools)
    quotes.ts                 # get_quotes
    history.ts                # Price history tools (8 tools, factory pattern)
    orders.ts                 # get_order, get_orders (multi-status merge)
    transactions.ts           # get_transactions, get_transaction
    technical.ts              # 12 TA indicators via technicalindicators
tests/
  setup.ts                    # makeMockClient() factory
  *.test.ts                   # Mirror source structure
  tools/*.test.ts             # Tool-specific tests
package.json
tsconfig.json
docs/
  openapi/                    # Schwab API OpenAPI 3.x specifications

Important: Read-Only Server

This is a read-only fork. All trading, order placement, order cancellation, options tools, approval workflows, and Discord integration have been removed. Every registered tool has readOnlyHint: true. Do not add write operations.

Build, Test, and Development Commands

# Install dependencies
bun install

# Run the CLI
bun run src/index.ts --help
bun run src/index.ts server --help

# Type checking
bun run typecheck    # or: tsc --noEmit

# Run full test suite
bun test

# Run a single test file
bun test tests/tools/market.test.ts

# Run tests matching a pattern
bun test --grep "get_order"

# Build standalone binary
bun build src/index.ts --compile --outfile schwab-mcp

# Combined check before commit
tsc --noEmit && bun test

# MCP Inspector
npx @modelcontextprotocol/inspector bun run src/index.ts server

Read the full file on GitHub · 219 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. 4d ago First seen · 219 lines · 1,708 tokens per session scan A 9b64ad2a672f

Subscribe to this mod's changes

schwab-mcp AGENTS.md is an instructions file published in the GitHub repository Tapojit/schwab-mcp (0 stars, last pushed 5mo ago), licensed MIT. It adds 1,708 tokens to every session, about $0.0085 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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