agentmods.dev

prospec: Skill for Claude Code

.agents/skills/prospec-upgrade/SKILL.md

prospec-upgrade is a skill for Claude Code, Codex from benwu95/prospec. It costs 112 tokens per session (4,084 once invoked), scanned A, original, MIT.

A follow-up procedure for finishing a Prospec version upgrade, a process that updates project documentation and synchronises its agents with the new version.

In plain words
What is it for?
Use it after prospec upgrade to review the generated documentation inventory, offer updates file by file, create still-missing documents, choose an artifact language when needed, and add triggers to newly added skills.
Why use it?
It handles the judgement-based work that an automatic upgrade cannot reliably decide, such as whether changed document formats need updates or whether missing guidance should be added.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is benwu95/prospec's own configuration. It tells Claude Code and Codex how to work on prospec 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 prospec configures →

not rated 6repo changed 4d ago A scan 112 tokens original MIT
View source ↗ benwu95/prospec benwu95.github.io
Reuse

Borrowing it

Nothing to install: this file belongs to benwu95/prospec. 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/benwu95/prospec/main/.agents/skills/prospec-upgrade/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/benwu95/prospec

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 prospec-upgrade

README.md
[![agentmods](https://agentmods.dev/badge/skills/benwu95/prospec/prospec-upgrade/github.svg)](https://agentmods.dev/skills/benwu95/prospec/prospec-upgrade)
Your own site
<a href="https://agentmods.dev/skills/benwu95/prospec/prospec-upgrade"><img src="https://agentmods.dev/badge/skills/benwu95/prospec/prospec-upgrade/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 prospec-upgrade

Your own site · 80×15
<a href="https://agentmods.dev/skills/benwu95/prospec/prospec-upgrade"><img src="https://agentmods.dev/badge/skills/benwu95/prospec/prospec-upgrade.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 112 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,084 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.
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 $0.00112 $0.04084
Opus 5.5 $0.00045 $0.01634
Sonnet 5.5 $0.00022 $0.00817
Haiku 4.5 $0.00011 $0.00408

Measured 4d ago against content hash 79c3ebbb6f06, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

prospec-upgrade 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 4d 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/skills/prospec-upgrade/SKILL.md · 215 lines

How it starts

The opening of the file, as written. The whole thing — 215 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prospec Upgrade Skill

Activation

When triggered, briefly describe:

  • That prospec upgrade has recorded the new prospec version in .prospec.yaml and re-synced agents, and you'll finish the judgment steps it cannot do deterministically
  • You'll work through the report's docs inventory (every file prospec init creates): prospec upgrade has already back-filled any that were missing, so you offer to update any whose format has drifted from the latest templates and to enrich the docs it just created that need more than a baseline (e.g. the index's real module table) — asking before each change — plus, as a safety net, create any still marked missing; offer to set an artifact language if the project never chose one (a project from a pre-feature CLI); and localize triggers for skills that have none
  • This is a periodic upgrade flow — re-runnable and self-terminating

Language Policy

Write each generated document in the language the Constitution's Language Policy rule assigns to its path — change artifacts and their archived summaries in the project's artifact language, the trust zone (Knowledge base, Feature Specs, index) in English. One skill run may write both. Free text you pass the CLI that lands in a change artifact follows the artifact language too, leaving its paths, commands, enum values and the fixed prefixes the CLI matches untranslated. Keep code, identifiers, technical terms, and git commit messages in English.

CLI Prerequisite (required)

The prospec CLI is a required file for this skill — its deterministic steps call prospec commands. Probe BEFORE any other step; there is no manual fallback.

  1. Run prospec --version (Bash).
  2. Command not found / not executable → STOP. Ask the user to install the prospec standalone executable — the one-click installer script from the project README (macOS/Linux install.sh, Windows install.ps1) or a release binary from GitHub Releases; prospec is NOT published to npm. Then re-run this skill.
  3. Version older than 2.10.0 → STOP. Report the installed vs required version and ask the user to upgrade, then re-run this skill.

Read the full file on GitHub · 215 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. 4d ago Changed 79c3ebbb6f06
  2. 9d ago Changed 201323747dad
  3. 13d ago Changed 73a8a3685246
  4. 20d ago Changed 25faabdf1e24
  5. 23d ago Changed 5c039aac090b
  6. 28d ago Changed e0cc0eb0e75c
  7. 1mo ago Changed d698721446f6
  8. 1mo ago Changed · +2 lines · +9 tokens per session 7614541a3478
  9. 1mo ago Changed 53fec247c4a2
  10. 2mo ago First seen · 213 lines · 103 tokens per session scan A 5d8af1b0c7b0

Subscribe to this mod's changes

prospec-upgrade is a skill published in the GitHub repository benwu95/prospec (6 stars, last pushed yesterday), licensed MIT. It adds 112 tokens to every session and 4,084 once invoked, about $0.0004 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 2026-08-31.

Building agentsWriting and docsagentic-codingai-coding-assistantai-knowledgeprogressive-disclosuresddspec-driven-development
Related

prospec-upgrade compared with skills from other repositories

prospec-upgrade next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
prospec-upgradebenwu95/prospecSkill6yesterdayMITA112Claude Code, Codex
ospec-goalclawplays/ospecSkill3902mo agoMITA29Codex
ospecclawplays/ospecSkill3902mo agoMITA26Claude Code, Codex
ospec-changeclawplays/ospecSkill3902mo agoMITA18Codex
review-spdzhu1090093659/spec_driven_developSkill9933mo agoMITA72Claude Code
deep-discusszhu1090093659/spec_driven_developSkill9933mo agoMITA181Claude Code
spec-driven-developzhu1090093659/spec_driven_developSkill9933mo agoMITA148Claude Code