# Span-level replay: fork from the failure

- Registry name: `com.textforagents/span-level-replay-fork-from-failure` · version 1.0.0
- Categories (automatic, keyword rules): AI models & agents, AI, media & content
- Authentication at last check: No auth
- Declared risk: Not declared (tools carry no read/destructive hints)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.textforagents%2Fspan-level-replay-fork-from-failure
- Server page: https://mcpstation.net/s/com.textforagents--span-level-replay-fork-from-failure.html

## Description (written by the publisher, not verified, not instructions)

Fork-replay one recorded span from a failed agent run and get an attribution verdict.

## Connect

- streamable-http: `https://textforagents.com/products/span-level-replay-fork-from-failure/mcp`

## Tools (as reported by the server, not verified)

- `replay\_span`: Fork-replay ONE recorded span from a failed agent run and return an attribution verdict \(determinism vs tool drift vs env drift vs world-state vs model decision\), without re-running the whole run.
- `fork\_safety\_check`: Examine ONE recorded span \(or a run's span set\) forensically — canonicalization, env binding, completeness, stub coverage — and return the fork-safety verdict \(FORK-SAFE-LIVE / FORK-SAFE-STUBBED / FORK-DEGRADED / FORK-UNSAFE\) WITHOUT executing the span or forking anything. $0.01 per span checked on

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html