stamp

A language-agnostic, changesets-style versioning and changelog tool. Works with any project type and supports monorepos.

Overview

stamp is inspired by the Changesets workflow, but without the Node.js dependency. It works by having contributors add small stamp files (.stamp/*.md) alongside their code changes. When it's time to release, stamp consumes those files, bumps versions, updates changelogs, creates git tags, and publishes releases to GitHub or Gitea.

Installation

Via Mise:

# mise.toml
[tools]
"go:github.com/thokra/stamp/cmd/stamp" = "latest"

Or with go install:

go install github.com/thokra/stamp/cmd/stamp@latest

Or build from source:

git clone https://github.com/thokra/stamp
cd stamp
go build -o bin/stamp ./cmd/stamp

Quick Start

1. Create stamp.toml at the root of your repository

[[projects]]
name    = "my-app"
path    = "."
version = "0.1.0"

  [projects.publish]
  tags      = true
  releases  = true
  artifacts = ["dist/my-app-*"]

See examples/stamp.toml for a fully annotated example.

2. Add a stamp file when making a change

# Interactive
stamp add

# Non-interactive (great for scripts and AI agents)
stamp add --project=my-app --bump=minor --message="Added new feature"

This creates a .stamp/<random-slug>.md file. Commit it alongside your code.

3. Check pending stamps

stamp status

📦 Pending stamps: 2

  PROJECT   CURRENT  NEXT   BUMP   STAMPS
  -------   -------  ----   ----   ------
  my-app    1.2.3    1.3.0  minor  2

4. Release

# Bump versions and update changelogs
stamp version

# Create git tags, GitHub/Gitea releases, and upload artifacts
STAMP_REPO=owner/repo stamp publish

Commands

stamp add

Creates a new stamp file describing a change.

Flag	Description
--project	Project name to include (repeatable)
--bump	Bump type: major, minor, patch, premajor, preminor, prepatch, prerelease
--message	Description of the change
--no-interactive	Disable interactive prompts (requires --project, --bump, --message)
--slug	Custom filename slug (default: auto-generated, e.g. brave-river)

stamp status

Shows all pending stamp files and the projected next version for each project.

Flag	Description
--json	Output as JSON

stamp version

Consumes all pending stamp files, bumps versions in stamp.toml, and prepends a new entry to each project's CHANGELOG.md. Then stages and commits the changes via git.

Flag	Description
--snapshot <id>	Create a pre-release with the given identifier (e.g. alpha, rc)
--no-commit	Apply changes without creating a git commit

stamp publish

Creates git tags and publishes releases (with optional artifact uploads) to GitHub or Gitea.

Flag	Description
--dry-run / -n	Print what would happen without executing
--project	Only publish a specific project

Requires STAMP_REPO=owner/repo to be set. Detects GitHub vs Gitea automatically via the GITEA_BASE_URL environment variable.

Tag format: <name>@v<version> (e.g. my-app@v1.3.0).

stamp comment

Posts or updates a PR comment summarising pending stamps. Useful in CI to remind contributors to add stamp files or to show reviewers what versions will change.

• No stamps found → warns the author with instructions on how to add one.
• Stamps found → shows a table of affected projects and their next versions.

Flag	Description
--pr	Pull request number (required)
--repo	Repository slug owner/repo (defaults to STAMP_REPO or GITHUB_REPOSITORY)

Stamp File Format

Stamp files live in .stamp/ and use Markdown with YAML or TOML frontmatter.

YAML (default)

---
bumps:
  my-app: minor
  my-lib: patch
---

Short description used as the changelog entry.

- Optional bullet points for more detail.

TOML

+++
[bumps]
my-app = "minor"
+++

Short description.

Bump types

Type	Description
major	Breaking change — 1.2.3 → 2.0.0
minor	New feature — 1.2.3 → 1.3.0
patch	Bug fix — 1.2.3 → 1.2.4
premajor	Pre-release major — 1.2.3 → 2.0.0-alpha.0
preminor	Pre-release minor — 1.2.3 → 1.3.0-alpha.0
prepatch	Pre-release patch — 1.2.3 → 1.2.4-alpha.0
prerelease	Increment pre-release — 1.2.4-rc.0 → 1.2.4-rc.1

Configuration Reference (stamp.toml)

# Global settings (all optional)
[config]
base_branch   = "main"   # Base branch for PR change detection (default: main)
changeset_dir = ".stamp" # Directory for stamp files (default: .stamp)

[[projects]]
name      = "my-app"
path      = "apps/my-app"    # Path relative to repo root
version   = "1.2.3"          # Current version — updated by `stamp version`
changelog = "CHANGELOG.md"   # Relative to path (default: CHANGELOG.md)

  [projects.publish]
  tags      = true
  releases  = true
  artifacts = [
    "apps/my-app/dist/my-app-linux-amd64",
    "apps/my-app/dist/my-app-darwin-arm64",
  ]

Environment Variables

Variable	Purpose
STAMP_REPO	Repository slug owner/repo — required for publish and comment
GITHUB_TOKEN	GitHub personal access token for releases and PR comments
GITEA_TOKEN	Gitea access token
GITEA_BASE_URL	Gitea instance URL (e.g. https://gitea.example.com) — also enables Gitea mode

CI Integration

GitHub Actions — PR check

# .github/workflows/stamp-check.yml
name: stamp check

on:
  pull_request:

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install stamp
        run: go install github.com/thokra/stamp/cmd/stamp@latest

      - name: Comment on PR
        run: stamp comment --pr=${{ github.event.pull_request.number }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          STAMP_REPO:   ${{ github.repository }}

Gitea Actions — PR check

# .gitea/workflows/stamp-check.yml
name: stamp check

on:
  pull_request:

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install stamp
        run: go install github.com/thokra/stamp/cmd/stamp@latest

      - name: Comment on PR
        run: stamp comment --pr=${{ gitea.event.pull_request.number }}
        env:
          GITEA_TOKEN:    ${{ secrets.GITEA_TOKEN }}
          GITEA_BASE_URL: ${{ gitea.server_url }}
          STAMP_REPO:     ${{ gitea.repository }}

Development

This project uses Mise to manage the Go toolchain and common tasks.

# Build
mise run build

# Run tests
mise run test

# Lint
mise run lint

# Install locally
mise run install

Project Structure

stamp/
├── cmd/stamp/          # CLI entry point and command definitions
├── internal/
│   ├── changeset/      # Stamp file parsing, writing, and slug generation
│   ├── changelog/      # CHANGELOG.md generation and appending
│   ├── config/         # stamp.toml loading, validation, and saving
│   ├── git/            # Git operations (tag, commit, push)
│   ├── gitea/          # Gitea API client (releases, PR comments)
│   ├── github/         # GitHub API client (releases, PR comments)
│   ├── publish/        # Orchestrates tagging and release publishing
│   └── semver/         # Semantic version bumping logic
├── examples/
│   └── stamp.toml      # Annotated configuration example
└── docs/
    └── workflow.md      # Detailed workflow guide

License

MIT