agentmods.dev

mcp: Instructions file for Codex

AGENTS.md

mcp AGENTS.md is an instructions file for Codex, OpenCode from rendobar/mcp. It costs 940 tokens per session, scanned A, original, MIT.

Repository instructions for developing the @rendobar/mcp server, a local program that lets AI agents use Rendobar media tools. They describe project structure, release rules, testing constraints, and communication requirements.

In plain words
What is it for?
Use them when modifying, testing, releasing, or reviewing the Rendobar MCP server and its SDK dependencies.
Why use it?
They prevent changes that could break the server connection, release process, startup speed, or package compatibility. They also keep the server consistent with the wider Rendobar codebase.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

This is rendobar/mcp's own configuration. It tells Codex and OpenCode how to work on 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 mcp configures →

not rated 1repo yesterday A scan 940 tokens original MIT
View source ↗ rendobar/mcp rendobar.com
Reuse

Borrowing it

Nothing to install: this file belongs to rendobar/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/rendobar/mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/rendobar/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.

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README.md
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Your own site
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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.

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Per session 940 This file is loaded in full into every session.
When invoked 940 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 $0.00940 $0.00940
Opus 5.5 $0.00376 $0.00376
Sonnet 5.5 $0.00188 $0.00188
Haiku 4.5 $0.00094 $0.00094

Measured 2mo ago against content hash 8297c353955b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 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.

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 · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — @rendobar/mcp

Guide for agents and humans working on the Rendobar MCP server. Companion to the monorepo guide at rendobar/rendobar. Dev rules, build/test commands, and the MCP-specific hard bans live in CLAUDE.md — read it before changing code.

TL;DR

  • What this is: the local stdio Model Context Protocol server for Rendobar. Single ESM bundle, ~6 tools, public, MIT.
  • SDK source: lives in the rendobar/rendobar monorepo under packages/sdk/. Consumed here as @rendobar/sdk from npm.
  • Release: conventional commits → release-please → npm publish with provenance + .mcpb GitHub Release asset + official MCP registry.
  • No manual tags, no manual version bumps. release-please owns them.

The rules that bite (full detail in CLAUDE.md)

  • Never write to stdout. It is reserved for JSON-RPC framing; one stray byte kills the connection. Logs go to stderr.
  • Recoverable tool failures return { isError: true }, not throws. Throw only for programmer bugs.
  • Cold-start budget < 2 s, bundle < 100 KB. CI asserts both. No network calls at module load.
  • One Zod version. The SDK uses zod/v4; two copies break registerTool. Fix the dep tree, never as any.

Cross-repo brand consistency

This repo is part of the broader Rendobar platform. The canonical reference for brand strings, URLs, and metadata across every rendobar repo is the apex monorepo's .claude/rules/brand-consistency.md:

https://github.com/rendobar/rendobar/blob/main/.claude/rules/brand-consistency.md

Canonical brand strings (must match apex)

Field Value
Display name Rendobar
Slogan Media processing API for developers and agents
Apex URL https://rendobar.com
Apex page URLs https://rendobar.com/<path>/ (always trailing slash)
API URL https://api.rendobar.com
Dashboard URL https://app.rendobar.com
CDN URL https://cdn.rendobar.com
Twitter handle @rendobar
Discord https://discord.gg/kAGqjBzx8N

Read the full file on GitHub · 61 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. 2mo ago First seen · 61 lines · 940 tokens per session scan A 8297c353955b

Subscribe to this mod's changes

mcp AGENTS.md is an instructions file published in the GitHub repository rendobar/mcp (1 stars, last pushed yesterday), licensed MIT. It adds 940 tokens to every session, about $0.0038 per session on Opus 5.5. 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.

ai-agentsclaudedeveloper-toolsffmpegmcpmodel-context-protocol
Related

mcp AGENTS.md compared with instructions from other repositories

mcp AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
mcp AGENTS.mdrendobar/mcpInstructions file1yesterdayMITA940Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode