cyberchef-mcp

MCPattested
v4.2.0io.github.doublegateGPL-3.0-or-laterUpdated 21d agonpmGitHub

CyberChef's 504 data-transformation operations as MCP tools: encryption, encoding, forensics.

Works in
ClaudeCursorCopilotGemini

Inferred from the transports this listing declares (stdio). A client not listed here hasn’t been ruled out — it just isn’t something Forge can confirm.

Attested build
A verified provenance attestation binds this artifact to the listed repository. Nobody has claimed the listing yet — this proves where the code was built, not who stands behind it.
20GitHub stars
1Forks
21d agoLast update
Package
Authorio.github.doublegate
LicenseGPL-3.0-or-later
Version4.2.0
Sourcenpm+mcp-registry
npmcyberchef-mcp
GitHubdoublegate/CyberChef-MCP
SBOMCycloneDX 1.6 ↓
Trust Status
A
85/100Trusted
✓Listed in Forge index+10/10
✓Identity verified · attested build+20/20
—Ed25519 publish signature+0/5
→ Included automatically when the publisher runs `forge publish`
—Domain verification+0/5
→ Publisher: host /.well-known/forge.json on the package homepage with { "publisher": "<github-login>" }
✓npm Trusted Publishing (Sigstore)+5/5
—npm maintainer match+0/5
→ Publisher: add the verified GitHub login to the npm package's maintainers (npm owner add <login>)
✓CVE scan · clean+30/30
✓Static analysis · clean+20/20
Paste into Claude Code, Cursor, or any AI assistant to fix all gaps
StatusIdentity verified
PublisherUnverified
SignatureUnsigned
Domain—
Provenance✓ Sigstore-verified · 2efee9e
Dependencies✓ 60 resolved+ · none vulnerable
Tool surface7 tools · none privileged
Security scan✓ Cleanv3.8.0 · 27d agoHow well does this scan work?
CODE…b/english-trigrams.mjsVery large base64-looking blob in source
EvalsNone
IndexedSep 5, 2026

Verification confirms publisher identity (repo ownership), not code safety. The security scan covers known CVEs and suspicious install scripts.

Tools

7 tools · none privileged
Statically extracted from the published packagev3.8.0 · 27d ago

Read out of the source npm actually ships, at scan time. The package was never executed. Tools registered dynamically at runtime, or hidden inside bundled or minified code, can be missed — so this is a floor on the tool surface, not a complete census of it.

cert_chainNo description published

This tool published no description. Forge does not invent one.

classical_cipherEncode and decode the classical ciphers CyberChef has no operation for: Playfair, the

Encode and decode the classical ciphers CyberChef has no operation for: Playfair, the

No input schema was published for this tool.

corpus_diffCompute statistics ACROSS a set of samples — what a recipe cannot express, since `Fork`

Compute statistics ACROSS a set of samples — what a recipe cannot express, since `Fork`

No input schema was published for this tool.

crib_dragDrag a guessed plaintext fragment along a XOR ciphertext and report every offset where

Drag a guessed plaintext fragment along a XOR ciphertext and report every offset where

No input schema was published for this tool.

cyclic_patternGenerate a De Bruijn (cyclic) pattern, or find the offset of a fragment within one.

Generate a De Bruijn (cyclic) pattern, or find the offset of a fragment within one.

No input schema was published for this tool.

ecdsa_recoverRecover an ECDSA private key from two signatures that reused a nonce, detected by a

Recover an ECDSA private key from two signatures that reused a nonce, detected by a

No input schema was published for this tool.

entropy_scanFind WHERE a file's entropy is high, not just whether it is: contiguous regions above a

Find WHERE a file's entropy is high, not just whether it is: contiguous regions above a

No input schema was published for this tool.

6 of 7 tools published a description.

Tool names and descriptions are written by the publisher and shown verbatim as inert text. They are the strings an MCP client passes to a model, so Forge scans them for prompt-injection patterns — any finding appears with the security scan above. “Privileged” is a keyword match on the tool name, not an audit of what the tool does: a benign-sounding name can still do anything.

About

CyberChef's 504 data-transformation operations as MCP tools: encryption, encoding, forensics.

Keywords
mcp
Alternatives
Comparing tool surfaces…

Tools exposed

7 tools · none privileged · observed by static extraction. A tool surface is what one scan read on one day, not a live capability list.

Linked names open Forge’s index of every entry observed exposing that tool. Browse all indexed tools.

Dependency tree

What one Forge scan resolved from npm metadata on 2026-09-06 — observed resolution, not a publisher declaration.

60 packages resolved · 60 direct · none carrying advisories Resolution stops at depth 4 and 60 packages.

The crawl stopped at the 60-package limit. The rest of the tree was never resolved.

36 more resolved packages are not drawn here (display cap: 24). Every dependency carrying an advisory is drawn regardless of the cap. Full inventory (CycloneDX SBOM)

Declared but not resolved

151 declared dependencies never landed in the tree. They are missing from Forge's resolution, not from the package.

+139 more not listed. The counts by reason above cover all of them.

Not followed: optionalDependencies, peerDependencies. This tree covers runtime dependencies only, so anything those pull in was never resolved.