Borrowing it
Nothing to install: this file belongs to Automattic/simplenote-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.
curl -O https://raw.githubusercontent.com/Automattic/simplenote-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/Automattic/simplenote-mcpWrote 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.
[](https://agentmods.dev/instructions/automattic/simplenote-mcp/agents-md)<a href="https://agentmods.dev/instructions/automattic/simplenote-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/automattic/simplenote-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.01789 | $0.01789 |
| Opus 5 | $0.00894 | $0.00894 |
| Sonnet 5 | $0.00358 | $0.00358 |
| Haiku 4.5 | $0.00179 | $0.00179 |
Grade A, and why
simplenote-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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Instructions
This repository is a Node.js 22+ TypeScript MCP server for Simplenote. It exposes Simplenote notes to MCP clients through either the local macOS Simplenote Core Data store or the Simperium HTTP API.
AGENTS.md is the source of truth for coding-agent guidance in this repo. CLAUDE.md should only point here.
Project Shape
src/server.tsis the MCP entry point and composition root. It dispatches CLI subcommands before setup, parses server startup args, resolves the active provider, wires telemetry, registers tool groups, and connects over stdio.src/server-args.tsparses server startup flags such as--path. Keep runtime server options here rather than insrc/cli.ts.src/cli.tsimplements CLI subcommands:setup,logout, anddisable-telemetry.src/tools/contains MCP tool and prompt registration code:common.tsdefines shared registration context, annotations, and tool error formatting.read.tsregisters core read tools: list tags, list/search notes, and get note.write.tsregisters write-capability-gated tools plus the revert workflow group.get_note_historyandget_note_versionlive here because they primarily supportrevert_note, but they must keep read-only MCP annotations.results.tsdefines tool output schemas and shared structured/text response helpers.
src/providers/contains provider and persistence code:resolver.tschooses local vs. API provider from config, token, and--path.native-macos.tsreads the macOS Simplenote store from disk and is always read-only.simperium-api.tstalks to Simperium, supports writes when configured, and owns API cache/write-safety behavior.auth.ts,config.ts, andpaths.tshandle token/config files and cross-platform paths.normalize.tsdefines normalized provider data shapes and shared note formatting helpers.
src/telemetry.tssends anonymous setup/tool-call events through Tracks. Telemetry MUST NOT include note IDs, note content, tags, search queries, Simplenote account details, or tokens.tests/mirrors source areas and uses Node's built-in test runner withtsx.server.jsat the repo root is a compatibility shim that importsdist/server.js; keep it stable unless intentionally changing local-checkout compatibility.server.jsonat the repo root is the MCP Registry manifest. Its top-levelversionandpackages[0].versionmust matchpackage.json'sversion; see Releases.dist/is build output. Do not hand-edit it.
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.
- 6d ago First seen · 104 lines · 1,789 tokens per session scan A e20f5bd88fb3
simplenote-mcp AGENTS.md is an instructions file published in the GitHub repository Automattic/simplenote-mcp (22 stars, last pushed 1mo ago), licensed MIT. It adds 1,789 tokens to every session, about $0.0089 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 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.