bitmacrocode-charmSAFE
MCP server: authoritative OEM automotive repair data (part numbers, torque specs, procedures) for 1982-2013 vehicles, from factory service manuals. Built for AI agents.
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
CHARM is an MCP server that gives AI agents authoritative OEM automotive repair data — factory service-manual part numbers, torque specs, fluid capacities, and procedures for vehicles 1982–2013, across 80+ makes.
Answers come straight from OEM factory service manuals, not a model's memory — so they're verifiable and source-attributed, not hallucinated. When a part number is identified, CHARM also returns links to purchase that exact part.
Built to be called by AI agents — Claude, ChatGPT, Gemini, and beyond.
Connect (hosted — no install)
Remote MCP endpoint (Streamable HTTP):
https://mcp.chatwithcharm.com/mcp
Claude Code
claude mcp add --transport http charm https://mcp.chatwithcharm.com/mcp
Claude Desktop — Settings → Connectors → Add custom connector → paste the URL above.
Config-file clients (Cursor, etc.)
{
"mcpServers": {
"charm": { "type": "http", "url": "https://mcp.chatwithcharm.com/mcp" }
}
}Then just ask naturally:
What's the front brake caliper part number for a 2009 Ford Taurus X, and where can I buy it?
What's the spark plug gap for a 2001 Toyota Camry?
Tools
Coverage
- Model years 1982–2013 — the DIY-repair sweet spot (out-of-warranty, owner-serviced vehicles).
- 80+ makes.
- Data sourced directly from OEM factory service manuals — authoritative, not generated.
Self-hosting (optional)
You don't need to self-host to use CHARM — the hosted endpoint above is the easy path. To run your own instance against the CHARM API, grab a free key at `https:
ed102243cf00OBSERVED · 2026-10-11Exposed tools (2)
2 read · 0 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
charm_list_makes | read | List all vehicle manufacturers covered by CHARM (1982-2013). Use to check coverage before a lookup. |
charm_lookup | read | Look up verified OEM part numbers, torque specs, fluid capacities, and service procedures for vehicles 1982-2013. |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | WARN |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- declared (6 observation(s))
- Shell
- none-observed
- Dependencies
- pinned
- Secrets in source
- none-found
Findings (1)
f"http://localhost:{PORT}", f"http://127.0.0.1:{PORT}",Gates applied: no_behavioural_pass.
ed102243cf00full audit observations/trust-audit/mcp-server/bitmacrocode__charm-mcp.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-11 | ed102243cf00 | SAFE | B | 89 | first audit |
Questions
What is the bitmacrocode-charm MCP server?
MCP server: authoritative OEM automotive repair data (part numbers, torque specs, procedures) for 1982-2013 vehicles, from factory service manuals. Built for AI agents.
What tools does bitmacrocode-charm expose?
2 in total: 2 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is bitmacrocode-charm safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does bitmacrocode-charm need?
It reads CHARM_MCP_API_KEY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.
How does bitmacrocode-charm run?
It speaks stdio and streamable-http, so it runs as a local process your client starts.
How current is this page?
The grade is for one exact copy of the source (ed102243cf00), read on 2026-10-11. The repository is watched and re-audited when it changes.