Borrowing it
Nothing to install: this file belongs to G-Core/gcore-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/G-Core/gcore-mcp-server/main/.claude/skills/upgrade-sdk/SKILL.mdgit clone --depth 1 https://github.com/G-Core/gcore-mcp-serverWrote 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.
[](https://agentmods.dev/skills/g-core/gcore-mcp-server/upgrade-sdk)<a href="https://agentmods.dev/skills/g-core/gcore-mcp-server/upgrade-sdk"><img src="https://agentmods.dev/badge/skills/g-core/gcore-mcp-server/upgrade-sdk/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.
<a href="https://agentmods.dev/skills/g-core/gcore-mcp-server/upgrade-sdk"><img src="https://agentmods.dev/badge/skills/g-core/gcore-mcp-server/upgrade-sdk.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00094 | $0.01842 |
| Opus 5.5 | $0.00038 | $0.00737 |
| Sonnet 5.5 | $0.00019 | $0.00368 |
| Haiku 4.5 | $0.00009 | $0.00184 |
Grade D, and why
upgrade-sdk scanned grade D with 3 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
mkdir -p "$D/$v" && curl -fsS -o "$D/$v.whl" "$u" && unzip -qo "$D/$v.whl" -d "$D/$v"; done Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -s https://pypi.org/pypi/gcore/json | python3 -c \ Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s https://pypi.org/pypi/gcore/json | python3 -c \ How it starts
The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Upgrade the gcore SDK
The authoritative procedure is "Upgrading the gcore SDK" in CONTRIBUTING.md.
Read that section first and follow it; this skill adds the operational steps
around it and the checks that are easy to forget. If the two disagree,
CONTRIBUTING.md wins - and fix this skill.
0. Find the versions
grep -n '"gcore==' pyproject.toml # pinned now
curl -s https://pypi.org/pypi/gcore/json | python3 -c \
"import json,sys; print(json.load(sys.stdin)['info']['version'])" # latest
git tag --sort=-v:refname | head -3 # latest server release
Target = $ARGUMENTS if given, else the latest on PyPI. If the pin already
equals the target, say so and stop. If several SDK releases were skipped, one
upgrade to the latest is fine - the snapshot diff covers them all.
Skim the SDK's own changelog for the range (GitHub G-Core/gcore-python,
CHANGELOG.md) for breaking changes, renamed resources and new env variables.
1. Branch
Start from an up-to-date main with a clean tree (git status; if there are
uncommitted changes, ask the user what to do with them - don't stash silently):
git checkout main && git pull && git checkout -b chore/gcore-sdk-<target>
2-6. Follow CONTRIBUTING.md
Bump the pin, uv lock --upgrade-package gcore && uv sync --all-extras --dev,
run the tests, review the diff, regenerate with UPDATE_SNAPSHOTS=1, re-run
uv run pytest -q, uv run ruff check ., uv run pyright.
While reviewing, produce a written summary from
git diff tests/snapshots/catalog.json docs/OPERATIONS.md:
- Added operations, grouped by product (
cloud,cdn,waap, ...). - Removed / renamed operations - these break
GCORE_TOOLS/GCORE_DENY_TOOLSpatterns and saved prompts; they must be in the changelog. - Changed access class or required parameters.
- Total operation count before -> after.
For every added operation check the access class against what the method
actually does (open the SDK source under .venv/lib/python*/site-packages/gcore/
if the name is ambiguous: action, run, trigger, rotate, reset,
purge, attach ...). Unknown verbs default to write; anything that deletes,
purges, revokes or is otherwise irreversible must be destructive. Fix via
OVERRIDES in gcore_mcp_server/catalog/classify.py plus a case in
test_classification (tests/test_catalog.py), then regenerate the snapshot.
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.
- 4d ago First seen · 148 lines · 94 tokens per session scan D 7398f6316787
upgrade-sdk is a skill published in the GitHub repository G-Core/gcore-mcp-server (12 stars, last pushed 5d ago), licensed Apache-2.0. It adds 94 tokens to every session and 1,842 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it D with 3 findings (sends data to an external url, downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-07.
upgrade-sdk compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| upgrade-sdkG-Core/gcore-mcp-server | Skill | 12 | 5d ago | Apache-2.0 | D | 94 | Claude Code |
| python-packagingRudyCity/superagent | Skill | 66 | yesterday | MIT | A | 43 | Claude Code, Codex |
| python-formatGoldziher/ai-rulez | Skill | 169 | 2d ago | MIT | A | 16 | Claude Code |
| pypi-releasealchemiststudiosDOTai/tunacode | Skill | 125 | 1mo ago | MIT | A | 52 | Claude Code, Codex |
| versioning-releasesoborchers/fractional-cto | Skill | 37 | 17d ago | MIT | A | 96 | Claude Code |
| plainx-releasedropseed/plain | Skill | 1.0k | 7d ago | none | A | 30 | Claude Code |
| python-releasebitwise-media-group/skills | Skill | 3 | today | MIT | A | 174 | Claude Code |