Plano is a proxy server and data plane that handles shared infrastructure for applications built with AI agents, including agent routing, orchestration, model selection, traces, metrics, and guardrails. Developers use it to connect agents and language models to production applications without embedding this middleware in each application. The catalogue entries provide skills and instructions for operating or developing with Plano.
Borrowing it
Nothing to install: this file belongs to katanemo/plano. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/katanemo/plano/main/CLAUDE.mdgit clone --depth 1 https://github.com/katanemo/planoWrote 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/katanemo/plano/claude-md)<a href="https://agentmods.dev/instructions/katanemo/plano/claude-md"><img src="https://agentmods.dev/badge/instructions/katanemo/plano/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.
<a href="https://agentmods.dev/instructions/katanemo/plano/claude-md"><img src="https://agentmods.dev/badge/instructions/katanemo/plano/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 | $0.01270 | $0.01270 |
| Opus 5.5 | $0.00508 | $0.00508 |
| Sonnet 5.5 | $0.00254 | $0.00254 |
| Haiku 4.5 | $0.00127 | $0.00127 |
Grade A, and why
plano 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.
How it starts
The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Plano is an AI-native proxy server and data plane for agentic applications, built on Envoy proxy. It centralizes agent orchestration, LLM routing, observability, and safety guardrails as an out-of-process dataplane.
Build & Test Commands
# Rust — WASM plugins (must target wasm32-wasip1)
cd crates && cargo build --release --target=wasm32-wasip1 -p llm_gateway -p prompt_gateway
# Rust — brightstaff binary (native target)
cd crates && cargo build --release -p brightstaff
# Rust — tests, format, lint
cd crates && cargo test --lib
cd crates && cargo fmt --all -- --check
cd crates && cargo clippy --locked --all-targets --all-features -- -D warnings
# Python CLI
cd cli && uv sync && uv run pytest -v
# JS/TS (Turbo monorepo)
npm run build && npm run lint && npm run typecheck
# Pre-commit (fmt, clippy, cargo test, black, yaml)
pre-commit run --all-files
# Docker
docker build -t katanemo/plano:latest .
E2E tests require a Docker image and API keys: tests/e2e/run_e2e_tests.sh
Architecture
Client → Envoy (prompt_gateway.wasm → llm_gateway.wasm) → Agents/LLM Providers
↕
brightstaff (native binary: state, routing, signals, tracing)
Crates (crates/)
- prompt_gateway (WASM) — Proxy-WASM filter for prompt processing, guardrails, filter chains
- llm_gateway (WASM) — Proxy-WASM filter for LLM request/response handling and routing
- brightstaff (native) — Core server: handlers, router, signals, state, tracing
- common (lib) — Shared: config, HTTP, routing, rate limiting, tokenizer, PII, tracing
- hermesllm (lib) — LLM API translation between providers. Key types:
ProviderId,ProviderRequest,ProviderResponse,ProviderStreamResponse
Python CLI (cli/planoai/)
Entry point: main.py. Built with rich-click. Commands: up, down, build, logs, trace, init, cli_agent.
Config (config/)
plano_config_schema.yaml— JSON Schema for validating user configsenvoy.template.yaml— Jinja2 template → Envoy configsupervisord.conf— Process supervisor for Envoy + brightstaff
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 · 107 lines · 1,270 tokens per session scan A 2138ac5aa390
plano CLAUDE.md is an instructions file published in the GitHub repository katanemo/plano (7,100 stars, last pushed 5d ago), licensed Apache-2.0. It adds 1,270 tokens to every session, about $0.0051 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.
Other instructions, from other repositories
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).
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.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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 copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.