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/joshrotenberg/tower-mcp/agents-mdgit clone --depth 1 https://github.com/joshrotenberg/tower-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/joshrotenberg/tower-mcp/agents-md)<a href="https://agentmods.dev/instructions/joshrotenberg/tower-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/joshrotenberg/tower-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 | $0.00402 | $0.00402 |
| Opus 5 | $0.00201 | $0.00201 |
| Sonnet 5 | $0.00080 | $0.00080 |
| Haiku 4.5 | $0.00040 | $0.00040 |
Grade A, and why
tower-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.
What it actually says
AGENTS.md
This repo has MCP servers configured in .mcp.json that you can use directly.
Available MCP Servers
tower-mcp-example
Simple demo server with echo, add, reverse tools and a greet prompt.
Resources: source://getting_started.rs - serves its own source code
weather
Weather forecasts via NWS API (US only).
Tools: get_forecast (lat/lon), get_alerts (state code)
codegen-mcp
MCP server that helps build MCP servers.
Tools: init_project, add_tool, remove_tool, get_project,
generate, validate, reset
Resources: project://Cargo.toml, project://src/main.rs, project://state.json
Getting Started
- Read
examples/README.mdfor an index of all examples - Read the
source://getting_started.rsresource to see how a server is built - Run any example:
cargo run -p tower-mcp-examples --example getting_started
Development
See CONTRIBUTING.md for build commands, PR guidelines, and contribution policy.
Project Structure
crates/tower-mcp/src/- Main library codecrates/tower-mcp-types/src/- Protocol types (no runtime deps)crates/tower-mcp-macros/src/- Optional proc macrosexamples/- Example servers and clients (23 standalone.rsfiles)codegen-mcp/- MCP server builder (generates tower-mcp code)conformance-server/- MCP spec conformance tests (48/48 stable; 114/114 final)conformance-client/- MCP conformance client (265/265 checks)
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 · 44 lines · 402 tokens per session scan A cfd77f1b94c3
tower-mcp AGENTS.md is an instructions file published in the GitHub repository joshrotenberg/tower-mcp (9 stars, last pushed 2d ago), licensed Apache-2.0. It adds 402 tokens to every session, about $0.0020 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 2026-08-31.
Other instructions, from other repositories
agent-tui AGENTS.md
AGENTS.md instructions for pproenca/agent-tui, covering agent-tui — agent guide, non-negotiable rules, repository map, tech stack and platform boundary.
fastmcp_rust AGENTS.md
AGENTS.md instructions for Dicklesworthstone/fastmcp_rust, covering agents.md — fastmcp rust, rule 0 - the fundamental override prerogative, rule number 1: no file deletion, git branch: only use main, never master and toolchain: rust & cargo.
turso AGENTS.md
AGENTS.md instructions for tursodatabase/turso, covering turso agent guidelines, quick reference, testing, running tests and test organization.
intelligent-terminal rust.instructions.md
Concise Rust coding conventions for this repository.
agentgateway copilot-instructions.md
Copilot instructions for agentgateway/agentgateway: Do not check for, speculate about, or report compilation errors during code review. Compilation diagnostics from review are frequently incorrect; rely on CI to detect and report compilation failures.
mq commit.instructions.md
Instructions for harehare/mq: Use the following format for commit messages.