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tieline MCP server

by nugehs·io.github.nugehs/tieline·v0.1.4
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Static FE-BE contract-drift checker: finds frontend calls the backend does not expose. CLI + MCP.

B82/100grade B
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Safety scan
B82/100

full report

Adoption
New

0 stars52 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

tieline tools (5, 1 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • tieline_checkwrite action

    Run the static frontend↔backend contract-drift check. Returns totals plus the

  • tieline_doctor

    Diff routes parsed from source code (a native server adapter) against the routes

  • tieline_init

    Auto-detect nearby repos (frontend + backend stacks) and write a tieline.config.json.

  • tieline_list

    Return the full resolved contract map: every frontend endpoint with its status

  • tieline_orphans

    List backend routes that no resolvable frontend call reaches (dead/unused routes).

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • Code scan26 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 109 days ago8/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 82/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How tieline compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
82/100
higher than 63% of 48,255 servers
Tools
5
the typical server has 7
Tools that change things
20%
typical: 0%. Fewer write tools means less an agent can break
Downloads a week
52
more than 43% of 12,191 servers with a package

What its tools let an agent do: 4 read · 1 change

Install tieline in Claude Code, Cursor or VS Code

Runs npx -y @nugehs/tieline on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add tieline -- npx -y @nugehs/tieline
Add to Cursor

What the publisher says

From the tieline repository's README, as published. We do not edit it. Read it on GitHub

tieline

Static frontend↔backend contract-drift checker. Pact without writing a single contract test.

tieline reads the code you already wrote on both sides of an API boundary — the HTTP calls your frontend makes and the routes your backend exposes — and tells you where they disagree. No contract tests to author, no broker to run, no backend to boot. It finishes in well under a second and is built to run in CI as a gate.

Delete the LLM and a developer still installs it. tieline is a deterministic

tool first; an agent reading its output is a bonus.

How it works

frontend code                                  backend code
  (axios, rtk-query, …)                          (express, nestjs, openapi, …)
        │                                                │
   client adapter                                   server adapter
        │            normalize  ${id} :id {id} → {}       │
        └───────────────►  join on (METHOD, path)  ◄──────┘
                                   │
              ✅ matched   ❌ drift   ⚠️ unverifiable   🟡 dead

Both sides are reduced to a canonical (METHOD, path) and joined. The matcher is adapter-agnostic — any client adapter pairs with any server adapter, so the same engine checks a React app against Express, an Angular app against Spring, or anything against an OpenAPI spec.

tieline vs alternatives

These tools solve neighbouring problems — pick by what you have and what you want guaranteed.

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

tieline: common questions

Is tieline MCP server safe?
Mostly: it is graded B (82/100). Read the tieline safety report
How do I install tieline?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does tieline need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is tieline maintained?
The last commit was 147 days ago (2026-06-10). The latest release is v0.1.4.
How does tieline compare with other MCP servers?
safety score 82/100 (higher than 63% of 48,255 servers); tools 5 (the typical server has 7); tools that change things 20% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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