pi-tinker: Instructions file for Claude Code

AGENTS.md

pi-tinker AGENTS.md is an instructions file for Claude Code, Codex, OpenCode from gvkhosla/pi-tinker. It costs 1,100 tokens per session, scanned A, original, Apache-2.0.

An agent guide for preparing and fine-tuning open-weight language models with Tinker. It describes a path from JSONL training data through validation, evaluation, training, checkpoints, comparison, and chat.

In plain words
What is it for?
Use it to validate JSONL data, run baseline evaluations, start smoke training, create checkpoints, compare results, and chat with a trained model through supported command-line workflows.
Why use it?
It gives coding agents a consistent workflow while keeping Tinker as the training system and requiring approval before actions that use external APIs.

Instructions file for Claude CodeCodexOpenCode

Written for Claude Code and Codex and OpenCode: Claude Code plugin machinery, but also the file is AGENTS.md. Also seen: mentions Claude Code; mentions AGENTS.md; mentions Codex.

This is gvkhosla/pi-tinker's own configuration. It tells Claude Code, Codex and OpenCode how to work on pi-tinker 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 pi-tinker configures →

Reuse

Borrowing it

Nothing to install: this file belongs to gvkhosla/pi-tinker. 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/gvkhosla/pi-tinker/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/gvkhosla/pi-tinker

Made for: Claude Code, Codex, OpenCode.

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Per session 1,100 This file is loaded in full into every session.
When invoked 1,100 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 $0.01100 $0.01100
Opus 5.5 $0.00440 $0.00440
Sonnet 5.5 $0.00220 $0.00220
Haiku 4.5 $0.00110 $0.00110

Measured 1mo ago against content hash dc59af148e9a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pi-tinker 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 1mo 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 · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent guide for pi-tinker

This repo is a Pi package that helps people run and fine-tune Inkling and other open-weight models with Tinker.

Product promise

Help a non-expert go from:

data → prepared JSONL → validation → baseline eval → smoke training → checkpoint → before/after comparison → chat in Pi

Do not turn this into a separate training framework. Keep Tinker/Tinker Cookbook as the real training layer and generate normal editable Python.

Agent compatibility

This AGENTS.md is the canonical guide for every coding agent. Pi is the primary and richest interface, but Claude Code, Codex, Cursor, Copilot, Gemini CLI, and other shell-capable agents can run the same operator non-interactively:

node scripts/agent-cli.mjs inkling
node scripts/agent-cli.mjs doctor
node scripts/agent-cli.mjs validate data/train.jsonl --model thinkingmachines/Inkling-Small

When installed from npm, use pi-tinker-agent instead. Read docs/coding-agents.md for details. Other agents should inspect and edit the generated Python directly; they must not imitate hidden Pi UI state or trigger API-using stages without explicit user approval. --force is file-only; never add --accept-regression, --allow-retired-model, or --allow-unapproved unless the user explicitly requests that exact safety override.

Best first commands for users

For Inkling itself:

/tinker inkling
/tinker inkling sweep --prompt "a representative task" --efforts low,medium,high,xhigh --yes
/model

If the user has no data yet:

/tinker demo
/tinker next

If the user has CSV/JSON/JSONL/docs, prefer the managed operator first:

/tinker improve <input> --goal "what should improve" --budget demo

Then, only after the user understands API usage and evals:

/tinker improve <input> --goal "what should improve" --budget smoke --eval-reviewed --yes
/tinker improve <input> --goal "what should improve" --budget small --yes
/tinker deploy latest

Read the full file on GitHub · 116 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. 1mo ago First seen · 116 lines · 1,100 tokens per session scan A dc59af148e9a

Subscribe to this mod's changes

pi-tinker AGENTS.md is an instructions file published in the GitHub repository gvkhosla/pi-tinker (25 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 1,100 tokens to every session, about $0.0044 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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