Fallback

io.github.baronsigma/fallback-agent-toolsVersion 0.1.0-beta.1

Tiny paid recovery and decision utilities for autonomous agents.

Status

Responds166 msNov 14, 2026, 14:46 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:46 UTC
Latency: 166 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://fallback.factrail.online/mcpResponds166 msNov 14, 2026, 14:46 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: fallback-agent-tools
Remote MCP server URL: https://fallback.factrail.online/mcp

Cursor

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

VS Code

code --add-mcp '{"name":"fallback-agent-tools","type":"http","url":"https://fallback.factrail.online/mcp"}'

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Tools

4 tools

Tools of Fallback
	Description		Read-only	Idempotent	Open world
`error_route`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.	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.	Not declared	Not declared	Not declared	Not declared
`request_repair`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.	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.	Not declared	Not declared	Not declared	Not declared
`source_route`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 already have the correct source or only need reasoning over supplied context. Price: $0.02 USD per call via x402.	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 already have the correct source or only need reasoning over supplied context. Price: $0.02 USD per call via x402.	Not declared	Not declared	Not declared	Not declared
`stop_search`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: $0.003 USD per call via x402.	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: $0.003 USD per call via x402.	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: Oct 6, 2026
Updated: Oct 6, 2026
Website: https://fallback.factrail.online/⁠ (opens in a new tab)
Repository: https://github.com/baronsigma/fallback-agent-tools⁠ (opens in a new tab)
Categories: Uncategorized
GDPR: Not declared

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