What is nanobot CLAUDE.md?

Repository guidance for Nanobot, a Go program that connects AI language models to tools through the Model Context Protocol (MCP).

Use it when developing Nanobot, especially when changing its backend or building the nanobot program.

It gives a coding agent the project context and the commands needed to build, run, format, and test the code.

How obot-platform/nanobot configures Claude Code

About the project

Nanobot is a standalone MCP host: a service that connects MCP servers, a language model, and context to provide an agent interface such as a chatbot. It is for building deployable MCP- and MCP-UI-based agents, including dedicated assistants for games, shopping, and other services. Catalogue entries provide example agents and extensions.

obot-platform/nanobot · 1,360 stars · on GitHub · nanobot.ai

Reuse

Borrowing it

Nothing to install: this file belongs to obot-platform/nanobot. 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/obot-platform/nanobot/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/obot-platform/nanobot

Made for: Claude Code.

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/obot-platform/nanobot/claude-md/github.svg)](https://agentmods.dev/instructions/obot-platform/nanobot/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/obot-platform/nanobot/claude-md"><img src="https://agentmods.dev/badge/instructions/obot-platform/nanobot/claude-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/obot-platform/nanobot/claude-md"><img src="https://agentmods.dev/badge/instructions/obot-platform/nanobot/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,662 This file is loaded in full into every session.

When invoked 1,662 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.

Model	Per session	Once invoked
Fable 5.1	$0.01662	$0.01662
Opus 5.5	$0.00665	$0.00665
Sonnet 5.5	$0.00332	$0.00332
Haiku 4.5	$0.00166	$0.00166

Measured 2mo ago against content hash 11ebe1d25dc9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nanobot CLAUDE.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.

CLAUDE.md · 163 lines

How it starts

The opening of the file, as written. The whole thing — 163 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Nanobot is a standalone MCP (Model Context Protocol) host that enables building agents with MCP and MCP-UI. Unlike built-in MCP hosts in applications like VSCode, Claude, or ChatGPT, Nanobot is designed to be an open-source, deployable solution that combines MCP servers with LLMs to create agent experiences through external interfaces such as Obot. The project is written in Go.

Technology Stack:

Go 1.26.0 with GORM (SQLite, MySQL, PostgreSQL) and goja (JavaScript runtime for hooks)

Build and Development Commands

Backend (Go)

# Build the nanobot binary
make

# Run nanobot with a configuration file
./bin/nanobot run ./nanobot.yaml

# Run Go tests
go test ./...

# Run a specific test
go test ./pkg/agents -run TestName

# Format Go code
gofmt -w .

Architecture Overview

Backend Architecture

Core Components:

Runtime (pkg/runtime/) - Main orchestration layer that initializes the system. Creates and wires together the LLM client, tool service, agents, and sampling components. Manages the overall execution environment.
Agents (pkg/agents/) - Agent execution engine that handles tool mapping, request population, and agent interactions. Responsible for running agents backed by LLMs with access to tools.
Tools Service (pkg/tools/) - Central registry for tools and agents. Handles tool discovery, mapping, and execution delegation. Manages MCP server connections.
MCP Layer (pkg/mcp/) - MCP protocol implementation including sessions, clients, servers, and wire protocols. Handles both stdio and HTTP transports. Key types:
- Session - Manages MCP session lifecycle and message routing
- Client - MCP client implementation for connecting to servers
- Wire - Protocol transport abstraction (stdio/HTTP)
LLM Integration (pkg/llm/) - Abstraction over different LLM providers (OpenAI, Anthropic). Routes requests to appropriate providers based on model names. Handles both completion and response APIs.

Read the full file on GitHub · 163 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 · 163 lines · 1,662 tokens per session scan A 11ebe1d25dc9

Subscribe to this mod's changes

nanobot CLAUDE.md is an instructions file published in the GitHub repository obot-platform/nanobot (1,360 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 1,662 tokens to every session, about $0.0066 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.

nanobot CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
nanobot CLAUDE.mdobot-platform/nanobot	Instructions file	1.4k	1mo ago	Apache-2.0	A	1,662	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
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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

nanobot: Instructions file for Claude Code