bifrost: Skill for Claude Code

.claude/skills/changelog-writer/SKILL.md

changelog-writer is a skill for Claude Code from maximhq/bifrost. It costs 73 tokens per session (5,624 once invoked), scanned A, original, Apache-2.0.

A tool for preparing Bifrost release changelogs, which are summaries of changes in a software release. It also updates module versions according to how the project's modules depend on one another.

In plain words
What is it for?
Use it to generate release changelogs, bump module versions, and apply version changes across Bifrost's core, framework, plugins, and transports.
Why use it?
It avoids manually reviewing git history, deciding which versions to update, and writing separate changelog files.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

This is maximhq/bifrost's own configuration. It tells Claude Code how to work on bifrost 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 bifrost configures →

About the project

Bifrost is an AI gateway that gives applications one OpenAI-compatible API for accessing models from more than 23 providers. It is used to route model requests, handle provider failover and load balancing, and apply features such as caching, guardrails, and MCP gateway support.

maximhq/bifrost · 9,185 stars · on GitHub · getmaxim.ai

Reuse

Borrowing it

Nothing to install: this file belongs to maximhq/bifrost. 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/maximhq/bifrost/dev/.claude/skills/changelog-writer/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/maximhq/bifrost

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,624 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00073 $0.05624
Opus 5.5 $0.00029 $0.02250
Sonnet 5.5 $0.00015 $0.01125
Haiku 4.5 $0.00007 $0.00562

Measured 8d ago against content hash 7aa2eb3bf78b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

changelog-writer 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 8d 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/skills/changelog-writer/SKILL.md · 464 lines

How it starts

The opening of the file, as written. The whole thing — 464 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Changelog Writer

Generate changelogs for a new Bifrost release. Reads git history to identify changes per module, asks the user for version bump type, bumps all module versions respecting the dependency hierarchy, writes transports/changelog.md and per-module changelog.md files, and updates version files.

IMPORTANT: This skill NEVER creates or modifies files under docs/. No MDX files, no docs.json updates. Only changelog.md and version files within module directories.

Module Hierarchy

Changes cascade down this dependency chain:

core → framework → plugins → transports
  • core depends on nothing internal
  • framework depends on core
  • plugins/* each depend on core + framework
  • transports depends on core + framework + all plugins

If core changes, every module below it must bump its version (at minimum a patch bump).

If framework changes (but not core), plugins and transports must bump.

If only a plugin changes, transports must bump.

If only transports changes, only transports bumps.

Usage

/changelog-writer                    # Interactive - prompts for everything
/changelog-writer <transport-ver>    # Pre-set transport version (e.g., v1.5.0)

Workflow

Step 1: Gather Current State

Read the current version of every module:

echo "core: $(cat core/version)"
echo "framework: $(cat framework/version)"
echo "transports: $(cat transports/version)"
for d in plugins/*/; do echo "$(basename $d): $(cat ${d}version)"; done

To understand the previous release state, use the latest released tags (do NOT use docs/changelogs file mtimes - that directory also holds helm-, cli-, edge-, ent-, and prerelease files):

for prefix in core framework transports; do
  git tag -l "$prefix/v*" --sort=-v:refname | head -1
done

If a docs changelog for that transport version exists (docs/changelogs/v<version>.mdx), read it to know the previous versions of all modules.

Step 2: Identify Changes Since Last Release

Read the full file on GitHub · 464 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. 8d ago Changed · +2 lines 7aa2eb3bf78b
  2. 2mo ago First seen · 462 lines · 73 tokens per session scan A 5ac7b779193a

Subscribe to this mod's changes

changelog-writer is a skill published in the GitHub repository maximhq/bifrost (9,185 stars, last pushed today), licensed Apache-2.0. It adds 73 tokens to every session and 5,624 once invoked, about $0.0003 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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