hevy-mcp: Instructions file for Codex

AGENTS.md

hevy-mcp AGENTS.md is an instructions file for Codex, OpenCode from chrisdoc/hevy-mcp. It costs 2,197 tokens per session, scanned A, original, MIT.

Agent instructions for hevy-mcp, including how to start work in a separate Git worktree and how to follow the repository's source-of-truth and testing rules.

In plain words
What is it for?
Use them before making changes to inspect the checkout, create a worktree, follow commit conventions, and write safe tests.
Why use it?
They protect existing changes and the main branch by requiring an isolated feature branch and review-ready Git workflow.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

README.md
[![agentmods](https://agentmods.dev/badge/instructions/chrisdoc/hevy-mcp/agents-md/github.svg)](https://agentmods.dev/instructions/chrisdoc/hevy-mcp/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/chrisdoc/hevy-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/chrisdoc/hevy-mcp/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.

agentmods 80×15 button for hevy-mcp AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/chrisdoc/hevy-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/chrisdoc/hevy-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,197 This file is loaded in full into every session.
When invoked 2,197 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 $0.02197 $0.02197
Opus 5.5 $0.00879 $0.00879
Sonnet 5.5 $0.00439 $0.00439
Haiku 4.5 $0.00220 $0.00220

Measured 12d ago against content hash 484860759297, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

hevy-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 12d 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 · 191 lines

How it starts

The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Working in hevy-mcp

Use this file for agent decisions and project invariants. Read the relevant source below for implementation details; do not copy changing tool versions, command inventories, or release cascades into this file.

Start with the task

  1. Inspect git status --short --branch and git worktree list. Preserve unrelated changes and other checkouts.
  2. For an existing branch or PR, continue there. For new implementation work, fetch the intended base (normally origin/main) and create a feature branch in an isolated worktree. Read-only work needs no branch or dependency install.
  3. Read the applicable sources, then inspect the exact code involved. Install tools/dependencies only when execution requires them.
  4. Complete authorized work through validation and a reviewable result. Carry forward the user's corrections and existing authorization. Ask only for missing information that blocks progress or an action outside that scope.

Never reset, discard, or overwrite user changes. If a conflict risks those changes, stop and explain it. Never commit/push to main or force-push without explicit authorization. Use Conventional Commits and keep Git hooks enabled; investigate hook failures rather than bypassing them.

Sources to consult

docs/index.md maps tasks to guides and implementation entry points, and distinguishes current guidance from historical reports. Use it to find the relevant owner; verify changing facts in the linked source rather than copying inventories into instructions. CLAUDE.md is a symlink to this file.

Task Source of truth
Setup, Node policy, required checks, release policy CONTRIBUTING.md
Commands and pinned development tools package.json, mise.toml
Workspace ownership, allowed imports, release propagation repository/topology.json
Test selection docs/test-lanes.md, repository/validation-lanes.json
Node transports and lifecycle packages/node/README.md
Worker deployment, origins, authentication, OAuth Cloudflare Worker section of CONTRIBUTING.md
Telemetry and collector integration docs/observability.md, Worker version attribution
Generated API client Generated API client section of CONTRIBUTING.md

Read the full file on GitHub · 191 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. 12d ago Changed · +5 lines · +67 tokens per session 484860759297
  2. 20d ago Changed · -21 lines · -124 tokens per session 8af68138a541
  3. 28d ago Changed · +2 tokens per session 74c2dc0f344b
  4. 29d ago Changed · -177 lines · -1,450 tokens per session a374cc04ba4c
  5. 1mo ago Changed · +1 tokens per session 894dadc2b69f
  6. 1mo ago Changed · +145 lines · +1,251 tokens per session 3a7c2f7502ab
  7. 1mo ago First seen · 239 lines · 2,450 tokens per session scan A 380fb4621337

Subscribe to this mod's changes

hevy-mcp AGENTS.md is an instructions file published in the GitHub repository chrisdoc/hevy-mcp (523 stars, last pushed yesterday), licensed MIT. It adds 2,197 tokens to every session, about $0.0088 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 2026-08-30.

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