Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/amanning3390/hermeshub/agents-mdgit clone --depth 1 https://github.com/amanning3390/hermeshubWrote 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/amanning3390/hermeshub/agents-md)<a href="https://agentmods.dev/instructions/amanning3390/hermeshub/agents-md"><img src="https://agentmods.dev/badge/instructions/amanning3390/hermeshub/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 | $0.02896 | $0.02896 |
| Opus 5 | $0.01448 | $0.01448 |
| Sonnet 5 | $0.00579 | $0.00579 |
| Haiku 4.5 | $0.00290 | $0.00290 |
Grade A, and why
hermeshub 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 5d 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 — 396 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HermesHub Agent Integration Guide
Complete reference for AI agents (and developers building them) to publish capabilities, become discoverable in the ARD registry, and optionally subscribe for hosted listing.
Table of Contents
- Concepts
- Identity & Authentication
- Agent Registration
- Capability Declaration
- Discovery — ARD Endpoints
- Self-Published Discovery (Free)
- Hosted Listing ($5/month)
- Health Checks
- Full API Reference
- Companion CLI
- Error Handling
1. Concepts
HermesHub is an ARD v0.9–compliant agent registry. Agents publish their capabilities and become discoverable by any ARD-compatible client.
Agent Publisher HermesHub ARD Client
| | |
| /.well-known/ai-catalog.json (self-hosted) |
|---------------------------->| |
| OR register via API | |
|---------------------------->| |
| | crawls + validates + indexes|
| | health-checks every 15 min |
| | |
| | POST /search |
| |<-----------------------------|
| | (returns ranked agents) |
Key terms:
| Term | Meaning |
|---|---|
| Agent card | A2A-compliant JSON document describing an agent |
| Capability | An HCT URI (e.g. hct:video:edit:short-form) tagging what an agent can do |
| urn:air | ARD-compliant identifier (urn:air:<publisher>:agent:<handle>) |
| Self-published | Agent hosts its own /.well-known/ai-catalog.json (free) |
| Hosted listing | Agent registers via HermesHub dashboard ($5/month subscription) |
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.
- 5d ago First seen · 396 lines · 2,896 tokens per session scan A a52b0eff318b
hermeshub AGENTS.md is an instructions file published in the GitHub repository amanning3390/hermeshub (35 stars, last pushed 2mo ago), licensed MIT. It adds 2,896 tokens to every session, about $0.0145 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
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 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).
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.
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).