SERVER

ctxfw

Rank #7,252

io.github.heuristicolab/ctxfw

Zero-egress AI Agent Firewall: SARA prompt injection defense, AST context pruning & MCP governance.

1 version
7 GitHub stars
by heuristicolab (2 servers)View repository ↗
First listed
Sep 17, 2026
Last publish date
Oct 25, 2026
PURPOSE

What you can do with ctxfw

ctxfw is a Model Context Protocol (MCP) server published by heuristicolab. It ranks #7,252 of 166,322 active servers on MCP Toplist, and its repository has 7 GitHub stars. ctxfw is listed across 2 registries — Official MCP and Glama, with 1 tracked version. It was first listed on Sep 17, 2026 and most recently updated on Oct 25, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What ctxfw can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using ctxfw

DeclaredNo credentialsNo credentials declared

The registry listing declares no required environment variables or authentication. This is declared metadata, not a verified install — the repository README is the authority.

Declared by Glama, last synced Nov 2, 2026. Not independently verified by MCP Toplist.

No runtime, credential or payment requirements are recorded for this server beyond the declaration above.

INSTALLATION AND FIRST TASK

Connect ctxfw and confirm it works

Python package (PyPI)
claude mcp add ctxfw -- uvx ctxfw mcp
First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by heuristicolab
View all heuristicolab servers →

No task-specific alternatives are catalogued for ctxfwyet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed
Sep 17, 2026
Latest version published
Oct 25, 2026
Version history
1 version tracked (below)
Requirements evidence
Declared by Glama, last synced Nov 2, 2026. Not independently verified by MCP Toplist.
Profile checked
Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of
Nov 2, 2026
Registry sightings

Do you maintain ctxfw? to correct or enrich this profile.

VERSIONS

Available versions (1)

VersionPublished
4.1.1Oct 25, 2026
STANDING
#7,252of 166,322 active serversTop 5%

Ranks ahead of 159,070 of 166,322 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

MCP Toplist: Top 5% of 166,322
Markdown
[![MCP Toplist](https://mcptoplist.com/badge/io.github.heuristicolab%2Fctxfw.svg)](https://mcptoplist.com/server/io.github.heuristicolab%2Fctxfw)
HTML
<a href="https://mcptoplist.com/server/io.github.heuristicolab%2Fctxfw"><img src="https://mcptoplist.com/badge/io.github.heuristicolab%2Fctxfw.svg" alt="MCP Toplist: Top 5% of 166,322" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains ctxfw?
ctxfw is maintained by heuristicolab, which publishes 2 MCP servers (2 total versions) tracked on MCP Toplist.
Is ctxfw listed on the Official MCP Registry?
Yes — ctxfw is listed on the Official MCP Registry, alongside Glama.
How many versions does ctxfw have?
MCP Toplist tracks 1 version of ctxfw, most recently published on Oct 25, 2026.
Where can I find the source code for ctxfw?
The source code for ctxfw is hosted at github.com/heuristicolab/ctxfw.
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