What is betterpost-plugin AGENTS.md?

Instructions for connecting BetterPost, a hosted writing service that creates newsletters, blog posts, and social posts from recent sources. It runs as an MCP server, a service that coding agents can connect to for extra tools.

Use it to set up BetterPost and create source-based newsletters, blog posts, LinkedIn posts, tweets, or Bluesky posts for a product and its audience.

It removes the work of finding current sources, judging their relevance, and adding citations and publication dates to content. The instructions explain how to connect and confirm that BetterPost is available.

How betterpost/betterpost-plugin configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to betterpost/betterpost-plugin. 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/betterpost/betterpost-plugin/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/betterpost/betterpost-plugin

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/betterpost/betterpost-plugin/agents-md/github.svg)](https://agentmods.dev/instructions/betterpost/betterpost-plugin/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/betterpost/betterpost-plugin/agents-md"><img src="https://agentmods.dev/badge/instructions/betterpost/betterpost-plugin/agents-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/betterpost/betterpost-plugin/agents-md"><img src="https://agentmods.dev/badge/instructions/betterpost/betterpost-plugin/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 3,630 This file is loaded in full into every session.

When invoked 3,630 The same file — it is already loaded in full.

Security scan C 2 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.

Model	Per session	Once invoked
Fable 5.1	$0.03630	$0.03630
Opus 5.5	$0.01452	$0.01452
Sonnet 5.5	$0.00726	$0.00726
Haiku 4.5	$0.00363	$0.00363

Measured 2mo ago against content hash 66d9d0dc14e7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

betterpost-plugin AGENTS.md scanned grade C with 2 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 2mo 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

`~/.codex/config.toml`:

Reads MCP configurationmediumAgent snooping

mcp.json carries server URLs and auth tokens; reading it lets a mod discover and abuse other integrations.

A newly added server does not join the session that added it — clients read MCP configuration at startup, so `betterpost_*` tools stay absent until the client

AGENTS.md · 216 lines

How it starts

The opening of the file, as written. The whole thing — 216 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Using BetterPost

BetterPost is a hosted service, available as an MCP server, that writes timely, well-sourced content. This guide covers what it does, how to add it, and how to use it — for both people and the agents acting on their behalf.

BetterPost writes timely, well-sourced content — newsletters, blog posts, LinkedIn posts, tweets, and Bluesky posts — grounded in current sources across news, social, and the open web. It finds recent sources relevant to a user's product and audience, ranks them by relevance, and writes human-sounding content with real citations and publication dates.

You reach BetterPost through its MCP server at https://betterpost.ai/mcp (Streamable HTTP). Tools are namespaced betterpost_*. Sign in with your BetterPost account when prompted — new accounts start with 100 free credits, and there's no key to paste.

Add BetterPost

BetterPost is a remote MCP server, so any client that supports custom MCP connectors can use it — no install, no local process, no API key.

Already have the connector? If betterpost_* tools are listed in this session, setup is done. Skip to "When to use BetterPost".

No betterpost_* tools? Then the connector isn't registered in this client yet, and nothing else in this guide works until it is. Registration is a one-time config change and it is the first step, not a fallback: an agent with shell or file access registers the server itself, under whatever rules its client applies to configuration changes. The one part that needs a person is the browser sign-in. Writing the user's piece from model knowledge instead is not a substitute — see "If BetterPost isn't connected" below for why.

1. Register the server

Claude Code — --scope user registers it for every project; the default scope is local, which binds it to the current directory only.
```
claude mcp add betterpost --scope user --transport http https://betterpost.ai/mcp
```

Read the full file on GitHub · 216 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.

2mo ago First seen · 216 lines · 3,630 tokens per session scan C 66d9d0dc14e7

Subscribe to this mod's changes

betterpost-plugin AGENTS.md is an instructions file published in the GitHub repository betterpost/betterpost-plugin (0 stars, last pushed 2mo ago), licensed MIT. It adds 3,630 tokens to every session, about $0.0145 per session on Opus 5.5. A static security scan graded it C with 2 findings (reads agent configuration directories, reads mcp configuration). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Writing and docs

betterpost-plugin AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
betterpost-plugin AGENTS.mdbetterpost/betterpost-plugin	Instructions file	0	2mo ago	MIT	C	3,630	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

betterpost-plugin: Instructions file for Codex