QAmcp

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Directory / WithBy

WithBy

Q: Is WithBy MCP server safe?

QAmcp's test on 7 Nov 2026: None of the hidden-instruction wordings we know were found in its 7 tool descriptions. Its error messages showed no secrets or internal details. 6 of its 7 tools are labeled read-only; the others may change or send things. Overall it scored 100/100 on 7 Nov 2026. A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

by withby.ai · https://withby.ai/mcp

Washington's mountain passes, checked every few minutes, and stories about places along the road.

7 tools✓ no account neededPricing: on their site

See pricing →Visit website

100 /100

PASS

12 of 12 checks · 7 Nov 2026

Test it now for current results

At a glance

Runs where: On their server. What you send to it goes to them.
What you need: Nothing: it answered without a login
Tools: 7 tools
Its own safety labels: 6 read-only, 1 labeled as changing things
Memory it takes: About 1,400 tokens of your AI's memory, just for its tool descriptions
Largest answer: About 6.1 KB in our test
Speed: Average answer in our test: 41 ms

Tokens are an estimate: the characters in its tool names, descriptions and inputs, divided by 4. The exact number depends on your AI model. Safety labels are what the server says about itself. From our latest test, 7 Nov 2026.

Is WithBy MCP server safe?

None of the hidden-instruction wordings we know were found in its 7 tool descriptions.
Its error messages showed no secrets or internal details.
6 of its 7 tools are labeled read-only; the others may change or send things.
Overall it scored 100/100 on 7 Nov 2026.

A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

What this test does not check

Its source code and packages.
What a tool quietly does behind the scenes, such as writing a file or calling another service.
Instructions hidden inside live tool answers. We only look for those in tool descriptions.
Hidden instructions worded in a way our list doesn't know yet.
Tools that could change something. Those are read, never run.

What QAmcp can and can't see · How to tell if an MCP server is safe · Hidden instructions · Prompt injection

Known security advisories

None found in GitHub Security Advisories on 7 Nov 2026.

That means none were published there, not that there are no problems. QAmcp tests how a server behaves. It does not scan source code.

What it can do

7 tools, in the server's own words.

pass_statusread-only

Use this when someone asks whether a mountain pass or the I-90 or SR 520 floating bridge is open, what the restrictions or chain rules are, or how long the cro…

passes_nowread-only

Use this when someone asks about mountain passes in general, which passes are open, or wants the whole list: Washington's mountain passes in depth, and the pas…

storyread-only

Use this when someone asks for a story about a place, landmark, or town along Washington's highways, or asks to hear what Sal knows about a specific location o…

stretch_storiesread-only

Use this when someone asks what stories Sal has along a highway or stretch of road in Washington (e.g.

stories_nearread-only

Use this when someone asks what stories Sal has near a town, city, landmark, or highway in Washington (e.g.

save_for_drive

Use this when someone wants Sal, WithBy's AI-generated narrator voice, to tell particular stories on their next drive: it adds 1 to 50 stories, by the ids the …

my_next_driveread-only

Use this when someone asks which stories they saved for their next drive, or what Sal will tell first.

Test results

Safe mode: only tools labeled read-only were run. How the test works

✓
ConnectsConnected in 216 ms
pass
✓
Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
pass
✓
Lists its toolsFound 7 tools
pass
✓
Every tool is describedAll 7 tools and their inputs are described
pass
✓
Tools are labeled safe or dangerousEvery tool has a safety label
pass
✓
No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.
pass
✓
Tools work with good inputs
All good
- ✓pass_status: Worked (30 ms)
- ✓passes_now: Worked (25 ms)
- ✓story: Worked (26 ms)
- ✓stretch_stories: Worked (26 ms)
- ✓stories_near: Worked (99 ms)
- –my_next_drive: Needs you to sign in, so it was not tested (not counted against the server)
- –save_for_drive: Not run: labeled as changing data
pass
✓
Bad inputs give a clean error
All good
- ✓pass_status: Refused missing required input "pass" with a clear error
- ✓pass_status: Refused wrong type for "pass" with a clear error
- ✓story: Refused missing required input "story" with a clear error
- ✓story: Refused wrong type for "story" with a clear error
- ✓stretch_stories: Refused missing required input "stretch" with a clear error
- ✓stretch_stories: Refused wrong type for "stretch" with a clear error
- ✓stories_near: Refused missing required input "place" with a clear error
- ✓stories_near: Refused wrong type for "place" with a clear error
pass
✓
Fast enough
All good
- ✓Connecting took 216 ms
- ✓Listing tools took 75 ms
- ✓Average tool answer: 41 ms
- ✓stories_near: Slowest tool: stories_near (99 ms)
pass
✓
No secrets leakedChecked 9 error messages: no secrets or internal details
pass
✓
Follows MCP best practices (not scored yet)Tool names, safety labels and tool list size follow the MCP guide
pass
✓
Resources and prompts work
All good (7 resources)
- ✓Opened 7 of 7 resources
- ✓An address that does not exist gets a clean "not found" error
pass
–
Tools work togetherNo tool's answer could be fed into another tool, so there were no chains to test (not counted either way)
not tested

Test it yourself

Free and open source. Same checks, same score.

npx qamcp-cli https://withby.ai/mcp

Show this score on GitHub

Free for every server in the directory. Paste this into your README: the badge shows the score from our latest test.

[![QAmcp score](https://qamcp.dev/s/ai-withby-withby.svg)](https://qamcp.dev/s/ai-withby-withby.html)

Score over time

7 Nov 2026100

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use WithBy, signed in with GitHub, one per person. Reviews never change the score.

Is this your server? Get an alert the moment it breaks.

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