api-versioning

api-versioning is a skill for Claude Code, Codex from blunotech-dev/agents. It costs 50 tokens per session (1,479 once invoked), scanned A, original, no licence file.

An API-evolution helper for supporting multiple versions of an API, such as v1 and v2. It covers URL or request-header version choices, deprecating older versions, and keeping older clients working.

In plain words
What is it for?
Use it when introducing API versions, planning v1-to-v2 migrations, or deciding how to retire an older interface.
Why use it?
It helps manage breaking changes without unexpectedly stopping clients that still use an older API version.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when introducing API versions, planning v1-to-v2 migrations, or deciding how to retire an older interface.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/blunotech-dev/agents/api-versioning
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add blunotech-dev/agents --skill api-versioning
Clone the repo
git clone --depth 1 https://github.com/blunotech-dev/agents

Made for: Claude Code, Codex.

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.

agentmods badge for api-versioning

README.md
[![agentmods](https://agentmods.dev/badge/skills/blunotech-dev/agents/api-versioning/github.svg)](https://agentmods.dev/skills/blunotech-dev/agents/api-versioning)
Your own site
<a href="https://agentmods.dev/skills/blunotech-dev/agents/api-versioning"><img src="https://agentmods.dev/badge/skills/blunotech-dev/agents/api-versioning/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.

agentmods 80×15 button for api-versioning

Your own site · 80×15
<a href="https://agentmods.dev/skills/blunotech-dev/agents/api-versioning"><img src="https://agentmods.dev/badge/skills/blunotech-dev/agents/api-versioning.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,479 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00050 $0.01479
Opus 5.5 $0.00020 $0.00592
Sonnet 5.5 $0.00010 $0.00296
Haiku 4.5 $0.00005 $0.00148

Measured 2mo ago against content hash f99c8a178d0b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

api-versioning scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Trap: Harder to test in a browser or with curl without extra flags. Raises support burden for third-party devs.
backend/api-versioning/SKILL.md · 131 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 131 lines · 50 tokens per session scan A f99c8a178d0b

Subscribe to this mod's changes

api-versioning is a skill published in the GitHub repository blunotech-dev/agents (2 stars, last pushed 5mo ago), with no licence file. It adds 50 tokens to every session and 1,479 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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