Borrowing it
Nothing to install: this file belongs to loerei/chronicle-mcp. 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/loerei/chronicle-mcp/main/.agents/skills/update-mcp/SKILL.mdgit clone --depth 1 https://github.com/loerei/chronicle-mcpWrote 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/loerei/chronicle-mcp/update-mcp)<a href="https://agentmods.dev/skills/loerei/chronicle-mcp/update-mcp"><img src="https://agentmods.dev/badge/skills/loerei/chronicle-mcp/update-mcp/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/loerei/chronicle-mcp/update-mcp"><img src="https://agentmods.dev/badge/skills/loerei/chronicle-mcp/update-mcp.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 | $0.00043 | $0.00557 |
| Opus 5 | $0.00022 | $0.00279 |
| Sonnet 5 | $0.00009 | $0.00111 |
| Haiku 4.5 | $0.00004 | $0.00056 |
Grade A, and why
update-mcp scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Update MCP
1. Locate Target MCP Source
Read active IDE configuration to extract MCP server command arguments and working directory:
| Environment | Configuration File Path | Target Key |
|---|---|---|
| Antigravity | <appDataDir>/mcp_config.json |
mcpServers.<name> |
| Cursor | Global Storage storage.json |
mcpServers.<name> |
| VS Code | User Settings settings.json |
mcp.servers.<name> |
2. Fetch & Merge Upstream
Inside the target MCP repository directory:
# 1. Stash uncommitted lockfiles or local edits if dirty
git stash
# 2. Prefer upstream remote if configured as a fork, otherwise origin
git fetch upstream 2>$null || git fetch origin
git merge upstream/<default-branch> 2>$null || git merge origin/<default-branch>
3. Build & Handle File Locks
Run the build command matching the project root markers:
| Project Marker | Build / Sync Command |
|---|---|
pyproject.toml / uv.lock |
uv sync |
package.json |
npm install && npm run build (or pnpm/bun equivalent) |
Cargo.toml |
cargo build --release |
go.mod |
go build ./... |
File Lock Recovery (Process In-Use)
If build fails due to locked binaries (EPERM, EBUSY, or access denied):
- Construct this terminal block for manual execution:
# 1. Close IDE/Antigravity completely # 2. Run in external PowerShell: cd "<path-to-mcp-directory>" <build-command> # 3. Reopen IDE and message back to resume - Prompt user to close IDE, execute the block, and notify upon completion.
4. Verification & Changelog Brief
- Query recent changes:
git log -n 5 --onelineor readCHANGELOG.md/whatsnew.json. - Summarize key fixes/features in 2-3 bullet points.
- Instruct user to reload MCP server and test with a lightweight tool call.
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.
- 9d ago First seen · 65 lines · 43 tokens per session scan A 3f372a1b4399
update-mcp is a skill published in the GitHub repository loerei/chronicle-mcp (0 stars, last pushed 5d ago), licensed MIT. It adds 43 tokens to every session and 557 once invoked, about $0.0002 per session on Opus 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.
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