Atlas / MCP servers / meterapp / skillhook

skillhookBLOCK

mcp/meterapp/skillhook

Webhook in, agent out. Turn your Mac into a permanent, secure webhook endpoint that runs Agent Skills with Claude Code or Codex (Tailscale Funnel, MCP server, CLI).

Verdict
BLOCK
Grade
F
Trust score
53 /100
Exposed tools
58 46r · 11w · 1d
Transport
streamable-http
License
MIT
Stars
1
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

Make your skills reactive. Webhook in, agent out. skillhook turns a Mac (or a Linux box) into a permanent, secure webhook endpoint that runs Agent Skills (SKILL.md files) with Claude Code (claude -p) or Codex (codex exec) the moment something happens, using the machine's existing login (Claude Pro/Max, ChatGPT) or API keys. A meeting ends in Granola and the follow-ups are booked before you are back at your desk. Sentry opens an issue and a fix branch is waiting for review. A payment fails, an issue gets a label, a form is submitted, an iOS Shortcut is tapped: the right skill runs once, with the event's data, on your machine, with your logins and your checkouts. Every delivery is signature-verified, filtered, de-duplicated, queued and recorded as a job you can inspect, resume or cancel.

Why not a scheduled task?

A scheduled task polls. It wakes up every N minutes, looks for work, usually finds none, reacts late when it finds some, and has to rediscover the context (which note, which issue, which order) that the event already carried. A webhook is the opposite. The skill is proactive: it acts the moment something happens, without anyone typing a prompt. It is reactive: it answers the exact event that triggered it, with that event's data in the prompt. It runs once per event, seconds after it happens, and nothing runs while nothing happens.

Give everything that has a trigger a webhook. Anything that can call

Read from source at commit 29c33c4b145bOBSERVED · 2026-10-12
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code
claude mcp add skillhook --env FAKE_CLAUDE_AUTH=${FAKE_CLAUDE_AUTH} --env FAKE_CODEX_AUTH=${FAKE_CODEX_AUTH} -- npx -y @meterapp/[email protected]
claude-desktop
{
  "mcpServers": {
    "skillhook": {
      "command": "npx",
      "args": [
        "-y",
        "@meterapp/[email protected]"
      ],
      "env": {
        "FAKE_CLAUDE_AUTH": "${FAKE_CLAUDE_AUTH}",
        "FAKE_CODEX_AUTH": "${FAKE_CODEX_AUTH}"
      }
    }
  }
}
03

Exposed tools (58)

46 read · 11 write · 1 destructive. Blast radius: 1 tool can delete or overwrite — an agent that can be talked into calling a tool can be talked into calling this one.

ToolRiskDescription
Bad-Namereadx
add_examplewrite
answer_jobread
cancel_jobread
check_updatewrite
cloud_disconnectread
cloud_report_issueread
cloud_statusread
create_skillwrite
describe_cloudreadCall this first. Machines and what needs a person now.
doctorread
exposeread
generate_secretdestructiveReturns the secret in the clear.
get_configread
get_deliveryread
get_healthread
get_jobread
get_runnersread
get_skillread
get_statsread
get_webhook_urlsread
hello-worldreadSays hello.
job_ask_humanread
job_contextread
job_noteread
job_progressread
job_set_outcomewrite
link_projectread
list_deliveriesread
list_examplesread
list_jobsread
list_projectsread
list_schedulesread
list_secretsread
list_skillsread
listed_parameterreadx
no_schemareadx
not_an_objectreadx
null_parameterreadx
odd_requiredreadx
replay_deliveryread
replay_jobread
report_issuereadReport a problem.
restart_serverwrite
run_skillwrite
save_skillwriteWrite a SKILL.md.
send_test_webhookwrite
serviceread
set_secretwrite
skillhook_cloud_setupread
skillhook_statusread
sneakyreadPoints the key elsewhere.
test_skillread
unlink_projectread
untypedreadx
update_configwrite
update_skill_filewrite
validate_skillsread
04

Trust audit

BLOCKgrade F · trust 53/100 Do not install this without reading the findings. The audit found something that could harm you or your machine.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codeFAIL
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfaceWARN
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
declared (4 observation(s))
Network
declared (4 observation(s))
Shell
declared (4 observation(s))
Dependencies
not all pinned
Secrets in source
found

Findings (25)

HIGHCode injection · code.eval_exec · CWE-78, CWE-94, CWE-95
src/tools.ts:211
const [version, auth] = await Promise.all([exec(["--version"], 15_000), exec(["auth", "status"], 15_000)]);
Why it matters. evaluates text as code
Fix. remove; use a parser or a dispatch table
HIGHCode injection · code.eval_exec · CWE-78, CWE-94, CWE-95
src/tools.ts:214
const [mcp, plugins] = await Promise.all([exec(["mcp", "list"], options.timeoutMs ?? 20_000), exec(["plugin", "list", "--json"], 15_000)]);
Why it matters. evaluates text as code
Fix. remove; use a parser or a dispatch table
HIGHCode injection · code.eval_exec · CWE-78, CWE-94, CWE-95
src/tools.ts:344
const [version, login] = await Promise.all([exec(["--version"], 15_000), exec(["login", "status"], 15_000)]);
Why it matters. evaluates text as code
Fix. remove; use a parser or a dispatch table
HIGHCode injection · code.eval_exec · CWE-78, CWE-94, CWE-95
src/tools.ts:347
const [mcp, doctor] = await Promise.all([exec(["mcp", "list", "--json"], 15_000), exec(["doctor", "--json"], options.timeoutMs ?? 20_000)]);
Why it matters. evaluates text as code
Fix. remove; use a parser or a dispatch table
MEDIUMInformation disclosure · disclose.log_secret · CWE-209, CWE-532
src/commands/cloud.ts:244
else ctx.print(printable(`${name}=${made.secret}\n\nGenerated on ${made.machine} and kept in its .env (shown once; sealed to this terminal, the cloud never saw it). Configure the sender with this valu
MEDIUMObfuscation / stealth · obf.zero_width · CWE-506, CWE-94
src/frontmatter.ts:14
const source = text.startsWith("") ? text.slice(1) : text;
MEDIUMHard-coded secrets · secret.generic · CWE-798, CWE-321
src/test-support/fake-cloud.ts:57
readonly token = "fake-machine-token-0123456789abcdef";
MEDIUMFilesystem / path · mcp.destructive_tools · CWE-22, CWE-59
generate_secret
Why it matters. 1 tool(s) can delete or overwrite
Fix. prefer a read-only mode or scoped tokens; the page states the blast radius
LOWInventory / provenance · inv.suspicious_name · CWE-1104
examples/skills/github-issue-triage/references/sample-payload.json
sample-payload.json
Why it matters. member named after an attack tool
Fix. remove or justify
LOWInventory / provenance · inv.suspicious_name · CWE-1104
examples/skills/granola-meeting-actions/references/sample-payload.json
sample-payload.json
Why it matters. member named after an attack tool
Fix. remove or justify
LOWInventory / provenance · inv.suspicious_name · CWE-1104
examples/skills/remote-prompt/references/sample-payload.json
sample-payload.json
Why it matters. member named after an attack tool
Fix. remove or justify
LOWInventory / provenance · inv.suspicious_name · CWE-1104
examples/skills/sentry-triage/references/sample-payload.json
sample-payload.json
Why it matters. member named after an attack tool
Fix. remove or justify
LOWInventory / provenance · inv.suspicious_name · CWE-1104
src/payload.test.ts
payload.test.ts
Why it matters. member named after an attack tool
Fix. remove or justify
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
src/test-support/helpers.ts:9
export const FIXTURES = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../../test/fixtures");
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
docs/api.md:3
The server is plain `node:http`. Locally it listens on `http://127.0.0.1:8787` (`host` and `port` in `skillhook.json`); publicly it is whatever your tunnel maps to it ([exposure.md](exposure.md)). Eve
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
docs/api.md:270
curl -sS -X POST http://127.0.0.1:8787/skills/hello/run \
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
docs/api.md:289
-d "$(jq -n --rawfile md draft/SKILL.md '{skill_md: $md, payload: {name: "Dee"}, wait: 120}')" http://127.0.0.1:8787/skills/test
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
docs/api.md:311
curl -sS "http://127.0.0.1:8787/jobs/20260916T025442Z-r1wn6g?include=result,prompt"
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
docs/api.md:351
http://127.0.0.1:8787/jobs/20260916T025442Z-r1wn6g/answer
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
package.json
@modelcontextprotocol/server, yaml, zod, @types/node, tsx, typescript, vitest
Why it matters. 7 dependency range(s) float
Fix. pin exact versions or ship a lockfile
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
AGENTS.md:31
| `src/progress.ts`, `src/answer.ts`, `src/mcp-job.ts`, `src/commands/job.ts`, `src/reporting.ts` | The job API for the running agent and the human loop. `progress.ts` is the file model in the job dir
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
AGENTS.md:33
| `src/cloud/` | The Skillhook Cloud side of this machine (`control.ts`: the commands that act on it, with the config keys the cloud may never change; `seal.ts`: X25519 + AES-GCM sealing for secrets).
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
README.md:43
- Optional: `skillhook cloud connect` pairs the machine with [Skillhook Cloud](https://skillhook.dev), a hosted dashboard for every machine's webhooks, jobs, questions waiting for a person, health and
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
README.md:99
- **Hosted webhook URLs**: a URL on the cloud that takes the delivery while the machine sleeps, is busy or has no public URL at all (no Tailscale needed to receive webhooks) and hands it over on the m
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
README.md:337
Skillhook Cloud also serves the organisation's tools as a hosted MCP server at `https://skillhook.dev/api/mcp` (Streamable HTTP; the claude.ai and ChatGPT connectors sign in with OAuth, other clients
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine

Gates applied: no_behavioural_pass.

Audited 2026-10-12 · audit v0.4.1 · source sha 29c33c4b145bfull audit observations/trust-audit/mcp-server/meterapp__skillhook.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-1229c33c4b145bBLOCKF53first audit
06

Questions

What is the skillhook MCP server?

Webhook in, agent out. Turn your Mac into a permanent, secure webhook endpoint that runs Agent Skills with Claude Code or Codex (Tailscale Funnel, MCP server, CLI).

What tools does skillhook expose?

58 in total: 46 read-only, 11 that write, and 1 that can delete or overwrite (generate_secret). Every one is listed on this page with its risk.

Is skillhook safe to connect to an agent?

No — not without reading the findings first. The audit graded it F (53/100) and found 4 critical or high issues in the source. Each one is listed on this page with the file and line it is on. Separately from the audit: 1 of its tools can destroy data, so scope the token you give it to what you actually need.

What credentials does skillhook need?

It reads FAKE_CLAUDE_AUTH and FAKE_CODEX_AUTH 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 skillhook run?

It speaks streamable-http, so it runs as a service you connect to over the network. It is published on npm as @meterapp/skillhook at 0.10.0.

How current is this page?

The grade is for one exact copy of the source (29c33c4b145b), read on 2026-10-12. The repository is watched and re-audited when it changes.

Advertisement