Span-level replay: fork from the failure

{
  "mcpServers": {
    "com.textforagents/span-level-replay-fork-from-failure": {
      "url": "https://textforagents.com/products/span-level-replay-fork-from-failure/mcp"
    }
  }
}

Indexed tools

Tool metadata and schemas come from the remote server and are untrusted. Indexing only lists tools; it never calls them.

2 shown · authentication unknown

• 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 the hosted surface.

  Schema valid · SHA-256 4b00f0d20dfe…

  View input schema

  {
    "type": "object",
    "properties": {
      "span": {
        "type": "object",
        "description": "One normalized span record."
      },
      "span_id": {
        "type": "string"
      },
      "spans": {
        "type": "array",
        "items": {
          "type": "object"
        },
        "description": "A recorded run's span records; without span_id every span is checked."
      }
    }
  }

• 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.

  Schema valid · SHA-256 926901607fc7…

  View input schema

  {
    "type": "object",
    "properties": {
      "span": {
        "type": "object",
        "description": "One normalized span record."
      },
      "span_id": {
        "type": "string"
      },
      "spans": {
        "type": "array",
        "items": {
          "type": "object"
        },
        "description": "A recorded run's span records; span_id selects the one to fork."
      }
    }
  }