Span-level replay: fork from the failure
mcp remote · streamable-http · v1.0.0 · source: crawl
https://textforagents.com/products/span-level-replay-fork-from-failure/mcp
Fork-replay one recorded span from a failed agent run and get an attribution verdict.
Works
100
Verified Oct 31, 2026 · p50 430 ms · p95 448 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'span-level-replay-fork-from-failure' |
| tools_listed | 15 | pass | 2 tools |
| schema_complete | 15 | pass | 2 of 2 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 430 ms |
| latency_p95 | 5 | pass | p95 448 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (2)
| Name | Description | Schema |
|---|---|---|
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. | typed |
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 / FOR | typed |
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