MCP server

Fallback

io.github.baronsigma/fallback-agent-tools

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Tiny paid recovery and decision utilities for autonomous agents.

Working at last checkAbout 2,117 tokens per request once connected4 tools

Website Source

https://fallback.factrail.online/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 4
Token cost: About 2,117 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http fallback-agent-tools https://fallback.factrail.online/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.fallback-agent-tools]
url = "https://fallback.factrail.online/mcp"

Gemini CLI

{"mcpServers":{"fallback-agent-tools":{"httpUrl":"https://fallback.factrail.online/mcp"}}}

Cursor

{"mcpServers":{"fallback-agent-tools":{"url":"https://fallback.factrail.online/mcp"}}}

VS Code

{"servers":{"fallback-agent-tools":{"type":"http","url":"https://fallback.factrail.online/mcp"}}}

Antigravity

agy mcp add fallback-agent-tools https://fallback.factrail.online/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"fallback-agent-tools","server_url":"https://fallback.factrail.online/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"fallback-agent-tools","server_url":"https://fallback.factrail.online/mcp"}

Tools

error_route ~351 tokens
Diagnose a failed API, HTTP, MCP, or tool request and return a bounded safe next action. Use it after a request fails when the safe next step is unclear. Provide a status, response, or error text; it does not execute requests or verify undocumented fixes. Price: $0.002 USD per call via x402.
request_repair ~745 tokens
Repair a failed API or HTTP request using only supplied schema and error evidence. Use after error_route identifies a request-shape or input problem. Returns the smallest justified request changes and abstains when evidence is insufficient. Price: $0.005 USD per call via x402.
source_route ~334 tokens
Find likely authoritative or machine-readable sources when you know what information you need but not where to retrieve it. Provide a goal and optional publisher domain or start URL; it returns ranked candidate routes and bounded evidence. Use it before blind searching. Do not use it when you alread
stop_search ~687 tokens
Decide whether another search or paid retrieval is worth the cost based on the scope already checked. Use after several search or source checks when you need to decide whether to continue or return a scoped not-found result. It does not prove universal absence and performs no searches itself. Price:

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