What is salesforce-mcp-lib CLAUDE.md?

Development guidelines for a TypeScript library and command-line server that connects coding agents to Salesforce through the Model Context Protocol (MCP).

Use them when changing Salesforce login, OAuth token handling, Apex access, configuration, or the MCP server and command-line interface.

They document the project structure, authentication methods, token storage, and built-in implementation choices so changes fit the existing design.

How Damecek/salesforce-mcp-lib configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Damecek/salesforce-mcp-lib. 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/Damecek/salesforce-mcp-lib/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Damecek/salesforce-mcp-lib

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/damecek/salesforce-mcp-lib/claude-md/github.svg)](https://agentmods.dev/instructions/damecek/salesforce-mcp-lib/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/damecek/salesforce-mcp-lib/claude-md"><img src="https://agentmods.dev/badge/instructions/damecek/salesforce-mcp-lib/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/damecek/salesforce-mcp-lib/claude-md"><img src="https://agentmods.dev/badge/instructions/damecek/salesforce-mcp-lib/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,777 This file is loaded in full into every session.

When invoked 1,777 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.

Model	Per session	Once invoked
Fable 5.1	$0.01777	$0.01777
Opus 5.5	$0.00711	$0.00711
Sonnet 5.5	$0.00355	$0.00355
Haiku 4.5	$0.00178	$0.00178

Measured 8d ago against content hash 9333c2e9ae94, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

salesforce-mcp-lib CLAUDE.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 8d 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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

- TypeScript ES2022, Node.js >= 20.0.0 + Zero production dependencies. Node.js built-in modules only (`node:http`, `node:https`, `node:fs`, `node:path`, `node:crypto`, `node:os`, `node:child_process`, `node:readline`, `n

CLAUDE.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

salesforce-mcp-lib Development Guidelines

Last updated: 2026-10-28 (v2 docs)

Active Technologies

TypeScript ES2022, Node.js >= 20.0.0 + Zero production dependencies. Node.js built-in modules only (node:http, node:https, node:fs, node:path, node:crypto, node:os, node:child_process, node:readline, node:url) (003-per-user-auth)
File-based token persistence in ~/.salesforce-mcp-lib/tokens/ (0600 permissions) (003-per-user-auth)
Apex (Salesforce API 65.0) + TypeScript (ES2022, Node.js >= 20) + Zero external dependencies. Apex uses platform-native APIs only. TypeScript uses Node.js built-in modules only (no production npm dependencies). JSON-RPC 2.0 core is implemented in-repo, not imported. (001-apex-mcp-server)

Project Structure

force-app/main/mcp/classes/       # Apex MCP framework (no json-rpc/ directory since 2.0.0)
  McpServer, McpTool, McpResource, McpResourceTemplate, McpPrompt   # public API: definitions
  McpToolResult, McpResourceResult, McpPromptResult, McpCompletion   # results
  McpContent, McpResourceContents, McpAnnotations, McpIcon           # content
  McpSchema, McpRequest, McpToolAnnotations                          # schema builder, request view
  McpException, McpConfigurationException                            # handler / registration errors
  McpRuntime, McpWire, McpUriTemplate, McpProtocolException          # internals (public only for Apex scoping)
  *Test, McpTestKit                                                  # tests and shared @IsTest helper

packages/salesforce-mcp-lib/src/
  index.ts             # CLI entry point (login subcommand + MCP server)
  config.ts            # CLI argument / env-var parser (timeout, concurrency, https policy)
  types.ts             # Shared type definitions
  errors.ts            # Error class hierarchy (SalesforceAuthError + subclasses)
  protocol.ts          # Line classification, MCP routing headers, remote response interpretation, lossless compaction
  stdio.ts             # Stdio transport: line splitter, queue, 64 MiB budget, concurrency, cancellation, backpressure
  mcpBridge.ts         # Forwarding to the Apex endpoint, one deadline, 401 retry
  authStrategy.ts      # AuthStrategy interface + PerUserAuthStrategy + factory
  authHttp.ts          # Bounded OAuth form POST (30 s total deadline, 1 MiB cap)
  oauth.ts             # Client credentials flow
  perUserAuth.ts       # Authorization Code flow (PKCE, token exchange, browser)
  callbackServer.ts    # Local HTTP server for the OAuth redirect
  tokenStore.ts        # File-based token persistence (~/.salesforce-mcp-lib/tokens/)
  urlPolicy.ts, redact.ts  # https-or-loopback rule, bounded error text

packages/salesforce-mcp-lib/tests/
  *.test.ts            # node:test runner; npmConsumer.smoke.test.ts packs and installs the tarball

docs/                  # architecture.md, mcp-wire-contract-2026-07-28.md, superpowers/ (design, plans, reports)
.github/workflows/ci.yml   # npm only: Node 20 and 22, no Salesforce secrets

Read the full file on GitHub · 98 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.

8d ago Changed · -1 tokens per session 9333c2e9ae94
9d ago Changed · +20 lines · +716 tokens per session 943a40e96002
2mo ago First seen · 78 lines · 1,062 tokens per session scan A b2ba9d6091a2

Subscribe to this mod's changes

salesforce-mcp-lib CLAUDE.md is an instructions file published in the GitHub repository Damecek/salesforce-mcp-lib (19 stars, last pushed 8d ago), licensed MIT. It adds 1,777 tokens to every session, about $0.0071 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Backend and APIs ai apex mcp mcp-server salesforce

salesforce-mcp-lib CLAUDE.md next to 6 instructions from other repositories
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salesforce-mcp-lib: Instructions file for Claude Code