hack-ink · yvette-carlisle · Jun 22, 2026 · Jun 22, 2026
diff --git a/Makefile.toml b/Makefile.toml
@@ -48,6 +48,9 @@
 # | real-world-memory-live-adapters            | command   |     |
 # | real-world-memory-live-consolidation       | command   |     |
 # | real-world-memory-live-knowledge           | command   |     |
+# | real-world-memory-mem0-openmemory-letta    | composite |     |
+# | real-world-memory-mem0-openmemory-letta-json | command |     |
+# | real-world-memory-mem0-openmemory-letta-report | command |     |
 # | real-world-memory-pageindex-openkb         | composite |     |
 # | real-world-memory-pageindex-openkb-json    | command   |     |
 # | real-world-memory-pageindex-openkb-report  | command   |     |
@@ -649,6 +652,63 @@ args = [
 	"tmp/real-world-memory/knowledge-report.md",
 ]
 
+[tasks.real-world-memory-mem0-openmemory-letta]
+workspace = false
+dependencies = [
+	"real-world-memory-mem0-openmemory-letta-report",
+]
+
+[tasks.real-world-memory-mem0-openmemory-letta-json]
+workspace = false
+command = "cargo"
+args = [
+	"run",
+	"-p",
+	"elf-eval",
+	"--bin",
+	"real_world_job_benchmark",
+	"--",
+	"run",
+	"--fixtures",
+	"apps/elf-eval/fixtures/real_world_external_adapters/mem0_openmemory_letta",
+	"--out",
+	"tmp/real-world-memory/mem0-openmemory-letta/report.json",
+	"--run-id",
+	"real-world-memory-mem0-openmemory-letta",
+	"--adapter-id",
+	"fixture_mem0_openmemory_letta",
+	"--adapter-name",
+	"mem0/OpenMemory and Letta memory-history/core-archive adapters",
+	"--adapter-behavior",
+	"same_corpus_adapter_fixture",
+	"--adapter-storage-status",
+	"blocked",
+	"--adapter-runtime-status",
+	"blocked",
+	"--adapter-notes",
+	"Offline fixtures map mem0 SDK history/export outputs to source ids and preserve OpenMemory UI/export plus Letta core/archive blockers until contained product exports map source ids.",
+]
+
+[tasks.real-world-memory-mem0-openmemory-letta-report]
+workspace = false
+dependencies = [
+	"real-world-memory-mem0-openmemory-letta-json",
+]
+command = "cargo"
+args = [
+	"run",
+	"-p",
+	"elf-eval",
+	"--bin",
+	"real_world_job_benchmark",
+	"--",
+	"publish",
+	"--report",
+	"tmp/real-world-memory/mem0-openmemory-letta/report.json",
+	"--out",
+	"tmp/real-world-memory/mem0-openmemory-letta/report.md",
+]
+
 [tasks.real-world-memory-pageindex-openkb]
 workspace = false
 dependencies = [

diff --git a/README.md b/README.md
@@ -279,6 +279,16 @@ provider-backed ELF evidence was required.
   indexes, lint output, saved exploration state, and watch/recompile traces map to
   ELF Knowledge Workspace source ids. The report makes no PageIndex/OpenKB parity,
   win, tie, or loss claim.
+- mem0/OpenMemory and Letta same-corpus adapter evidence after XY-1069: the June 22
+  follow-up adds `cargo make real-world-memory-mem0-openmemory-letta`, four
+  checked-in adapter fixtures, and a checked-in evidence report. The slice maps mem0
+  SDK `Memory.history`, scoped search, and local `Memory.get_all` export-style
+  readback to source ids with 1 pass and 1 history readback encoded. OpenMemory
+  UI/export remains blocked until a running product container and app database export
+  same-corpus rows. Letta core blocks and archival readback remain blocked until
+  exported core block JSON, archival passage/readback/search JSON, and source ids are
+  present. The report makes no hosted mem0 Platform, OpenMemory UI/export, or Letta
+  parity, win, tie, or loss claim.
 - Operator-approved public-proxy addendum after XY-930: the June 19 follow-up runs
   `cargo make baseline-production-private-addendum` with a simulated/public-proxy
   production corpus manifest approved for this stage. The run records 12 documents,
@@ -413,6 +423,7 @@ Detailed evidence and interpretation:
 - [P1 Memory Authority Closeout Report - June 22, 2026](docs/evidence/benchmarking/2026-06-22-p1-memory-authority-closeout-report.md)
 - [P2 Knowledge Workspace PageIndex/OpenKB Closeout Report - June 22, 2026](docs/evidence/benchmarking/2026-06-22-p2-knowledge-workspace-pageindex-openkb-closeout-report.md)
 - [PageIndex/OpenKB Same-Corpus Adapter Report - June 22, 2026](docs/evidence/benchmarking/2026-06-22-pageindex-openkb-same-corpus-adapter-report.md)
+- [mem0/OpenMemory and Letta Memory-History/Core-Archive Adapter Report - June 22, 2026](docs/evidence/benchmarking/2026-06-22-mem0-openmemory-letta-memory-history-core-archive-report.md)
 - [Live Baseline Benchmark Runbook](docs/runbook/benchmarking/live_baseline_benchmark.md)
 - [Single-User Production Runbook](docs/runbook/single_user_production.md)
 - Benchmark contract:
@@ -504,6 +515,8 @@ Detailed comparison, mechanism-level analysis, and source map:
 - [Operator-Approved Public-Proxy Production-Private Addendum - June 19, 2026](docs/evidence/benchmarking/2026-06-19-operator-approved-public-proxy-production-private-addendum.md)
 - [P1 Memory Authority Closeout Report - June 22, 2026](docs/evidence/benchmarking/2026-06-22-p1-memory-authority-closeout-report.md)
 - [P2 Knowledge Workspace PageIndex/OpenKB Closeout Report - June 22, 2026](docs/evidence/benchmarking/2026-06-22-p2-knowledge-workspace-pageindex-openkb-closeout-report.md)
+- [PageIndex/OpenKB Same-Corpus Adapter Report - June 22, 2026](docs/evidence/benchmarking/2026-06-22-pageindex-openkb-same-corpus-adapter-report.md)
+- [mem0/OpenMemory and Letta Memory-History/Core-Archive Adapter Report - June 22, 2026](docs/evidence/benchmarking/2026-06-22-mem0-openmemory-letta-memory-history-core-archive-report.md)
 - [Live Baseline Benchmark Runbook](docs/runbook/benchmarking/live_baseline_benchmark.md)
 - [Real-World Agent Memory Benchmark](docs/runbook/benchmarking/real_world_agent_memory_benchmark.md)
 - [External Memory Improvement Plan](docs/evidence/external_memory/external_memory_improvement_plan.md)
@@ -520,8 +533,9 @@ June 11, 2026; June 20 adds the Agent Knowledge OS Closeout Benchmark Report,
 the Graph Topic-Map Report - June 20, 2026, Knowledge Workspace Version-Diff
 Report - June 20, 2026, and the Live Knowledge-Page Rebuild/Lint Report - June 20,
 2026; June 22 adds the P1 Memory Authority Closeout Report, P2 Knowledge
-Workspace PageIndex/OpenKB Closeout Report, and PageIndex/OpenKB Same-Corpus Adapter
-Report after the June 19
+Workspace PageIndex/OpenKB Closeout Report, PageIndex/OpenKB Same-Corpus Adapter
+Report, and mem0/OpenMemory and Letta Memory-History/Core-Archive Adapter Report
+after the June 19
 XY-930 operator-approved public-proxy production addendum and service-native Dreaming
 readback, the qmd debug-ergonomics Dreaming retest, the June 17 competitor-strength
 closeout, and the June 16 temporal reconciliation, live consolidation self-check,

diff --git a/...s/real_world_external_adapters/mem0_openmemory_letta/letta_archival_readback_blocked.json b/...s/real_world_external_adapters/mem0_openmemory_letta/letta_archival_readback_blocked.json
@@ -0,0 +1,277 @@
+{
+  "schema": "elf.real_world_job/v1",
+  "job_id": "mem0-openmemory-letta-letta-archival-readback-blocked-001",
+  "suite": "core_archival_memory",
+  "title": "Block Letta archival search/readback until fallback, stale-core, and project-decision source ids map",
+  "encoding": {
+    "status": "blocked",
+    "reason": "Letta archival readback scoring is blocked until a contained Letta run exports archival passage/readback/search JSON that maps archival fallback, stale-core supersession, and project-decision recovery source ids.",
+    "follow_up": {
+      "title": "Run Letta archival search and readback adapter",
+      "reason": "The fair comparison needs Letta archival search/readback output with source ids for fallback runbook, stale-core supersession, and core-routing plus archival decision rationale."
+    }
+  },
+  "corpus": {
+    "corpus_id": "real-world-memory-mem0-openmemory-letta-2026-06-22",
+    "profile": "external_adapter",
+    "items": [
+      {
+        "evidence_id": "elf-archival-fallback-output",
+        "kind": "elf_same_corpus_output",
+        "text": "ELF same-corpus archival output: core-archival-archival-fallback-001 maps insufficient core source id fallback-core-insufficient to archival source id fallback-archival-runbook.",
+        "source_ref": {
+          "schema": "source_ref/v1",
+          "resolver": "real_world_job_fixture/v1",
+          "ref": {
+            "fixture": "archival_fallback",
+            "evidence_id": "fallback-archival-runbook"
+          },
+          "locator": {
+            "quote": "fallback-archival-runbook"
+          }
+        },
+        "created_at": "2026-06-11T04:41:00Z"
+      },
+      {
+        "evidence_id": "elf-stale-core-output",
+        "kind": "elf_same_corpus_output",
+        "text": "ELF same-corpus stale-core output: core-archival-stale-core-detection-001 maps stale core source id stale-core-validation-gate to current archival source ids archival-current-validation-gate and archival-supersedes-core-rationale.",
+        "source_ref": {
+          "schema": "source_ref/v1",
+          "resolver": "real_world_job_fixture/v1",
+          "ref": {
+            "fixture": "stale_core_detection",
+            "evidence_id": "archival-current-validation-gate"
+          },
+          "locator": {
+            "quote": "archival-current-validation-gate"
+          }
+        },
+        "created_at": "2026-06-11T04:30:00Z"
+      },
+      {
+        "evidence_id": "elf-project-decision-recovery-output",
+        "kind": "elf_same_corpus_output",
+        "text": "ELF same-corpus project-decision output: core-archival-project-decision-recovery-001 maps core routing source id decision-core-routing-block to archival source ids decision-archival-outcome-policy and decision-archival-core-search-boundary.",
+        "source_ref": {
+          "schema": "source_ref/v1",
+          "resolver": "real_world_job_fixture/v1",
+          "ref": {
+            "fixture": "project_decision_recovery",
+            "evidence_id": "decision-archival-outcome-policy"
+          },
+          "locator": {
+            "quote": "decision-archival-outcome-policy"
+          }
+        },
+        "created_at": "2026-06-11T04:51:00Z"
+      },
+      {
+        "evidence_id": "letta-archival-readback-blocker",
+        "kind": "adapter_blocker",
+        "text": "Letta archival readback blocker: no contained Letta output has emitted archival passage JSON, archival readback JSON, or archival search JSON mapped to fallback-archival-runbook, archival-current-validation-gate, archival-supersedes-core-rationale, decision-core-routing-block, and decision-archival-outcome-policy.",
+        "source_ref": {
+          "schema": "source_ref/v1",
+          "resolver": "real_world_job_fixture/v1",
+          "ref": {
+            "fixture": "letta_archival_readback_blocked",
+            "evidence_id": "letta-archival-readback-blocker"
+          },
+          "locator": {
+            "quote": "no contained Letta output has emitted archival passage JSON"
+          }
+        },
+        "created_at": "2026-06-22T04:05:00Z"
+      },
+      {
+        "evidence_id": "letta-archival-score-decoy",
+        "kind": "unsupported_claim",
+        "text": "Decoy: the ELF archival fallback, stale-core, and project-decision fixture passes prove Letta archival search is a measured loss.",
+        "source_ref": {
+          "schema": "source_ref/v1",
+          "resolver": "real_world_job_fixture/v1",
+          "ref": {
+            "fixture": "letta_archival_readback_blocked",
+            "evidence_id": "letta-archival-score-decoy"
+          }
+        },
+        "created_at": "2026-06-22T04:04:00Z"
+      }
+    ],
+    "adapter_response": {
+      "adapter_id": "fixture_mem0_openmemory_letta",
+      "answer": {
+        "content": "Letta archival readback remains blocked. The same-corpus ELF rows identify fallback-archival-runbook for archival fallback, archival-current-validation-gate and archival-supersedes-core-rationale for stale-core detection, and decision-core-routing-block plus decision-archival-outcome-policy for project-decision recovery. No contained Letta output has emitted archival passage, readback, or search JSON mapped to those ids, so no Letta archival win, tie, or loss is claimed.",
+        "claims": [
+          {
+            "claim_id": "elf_archival_outputs_present",
+            "text": "ELF same-corpus archival fallback, stale-core, and project-decision source ids are identified.",
+            "evidence_ids": [
+              "elf-archival-fallback-output",
+              "elf-stale-core-output",
+              "elf-project-decision-recovery-output"
+            ],
+            "confidence": "high"
+          },
+          {
+            "claim_id": "letta_archival_readback_blocked",
+            "text": "Letta archival scoring is blocked because no contained passage, readback, or search JSON maps those source ids.",
+            "evidence_ids": ["letta-archival-readback-blocker"],
+            "confidence": "high"
+          }
+        ],
+        "evidence_ids": [
+          "elf-archival-fallback-output",
+          "elf-stale-core-output",
+          "elf-project-decision-recovery-output",
+          "letta-archival-readback-blocker"
+        ],
+        "latency_ms": 1.1,
+        "cost": {
+          "currency": "USD",
+          "amount": 0.0,
+          "input_tokens": 0,
+          "output_tokens": 0
+        }
+      }
+    }
+  },
+  "timeline": [
+    {
+      "event_id": "letta-archival-same-corpus-selected",
+      "ts": "2026-06-22T04:05:00Z",
+      "actor": "benchmark",
+      "action": "selected_letta_archival_source_ids",
+      "evidence_ids": [
+        "elf-archival-fallback-output",
+        "elf-stale-core-output",
+        "elf-project-decision-recovery-output"
+      ],
+      "summary": "The Letta archival comparison selected fallback, stale-core, and project-decision source ids from the same core_archival_memory corpus."
+    },
+    {
+      "event_id": "letta-archival-readback-blocker-recorded",
+      "ts": "2026-06-22T04:06:00Z",
+      "actor": "benchmark",
+      "action": "recorded_letta_archival_readback_blocker",
+      "evidence_ids": ["letta-archival-readback-blocker"],
+      "summary": "Letta remains blocked until archival passage/readback/search JSON maps those source ids."
+    }
+  ],
+  "prompt": {
+    "role": "user",
+    "content": "Can Letta archival memory be scored for fallback, stale-core detection, and project-decision recovery?",
+    "job_mode": "compare",
+    "constraints": [
+      "cite_same_corpus_source_ids",
+      "require_letta_archival_search_readback",
+      "no_letta_win_tie_loss_without_export"
+    ]
+  },
+  "expected_answer": {
+    "must_include": [
+      {
+        "claim_id": "elf_archival_outputs_present",
+        "text": "ELF same-corpus archival fallback, stale-core, and project-decision source ids are identified."
+      },
+      {
+        "claim_id": "letta_archival_readback_blocked",
+        "text": "Letta archival scoring is blocked because no contained passage, readback, or search JSON maps those source ids."
+      }
+    ],
+    "must_not_include": [
+      "ELF archival fallback, stale-core, and project-decision fixture passes prove Letta archival search is a measured loss",
+      "Letta archival search parity is proven"
+    ],
+    "evidence_links": {
+      "elf_archival_outputs_present": [
+        "elf-archival-fallback-output",
+        "elf-stale-core-output",
+        "elf-project-decision-recovery-output"
+      ],
+      "letta_archival_readback_blocked": ["letta-archival-readback-blocker"]
+    },
+    "answer_type": "typed_blocker",
+    "accepted_alternates": [],
+    "requires_caveat": true,
+    "requires_refusal": false
+  },
+  "required_evidence": [
+    {
+      "evidence_id": "elf-archival-fallback-output",
+      "claim_id": "elf_archival_outputs_present",
+      "requirement": "cite",
+      "quote": "fallback-archival-runbook"
+    },
+    {
+      "evidence_id": "elf-stale-core-output",
+      "claim_id": "elf_archival_outputs_present",
+      "requirement": "cite",
+      "quote": "archival-current-validation-gate"
+    },
+    {
+      "evidence_id": "elf-project-decision-recovery-output",
+      "claim_id": "elf_archival_outputs_present",
+      "requirement": "cite",
+      "quote": "decision-archival-outcome-policy"
+    },
+    {
+      "evidence_id": "letta-archival-readback-blocker",
+      "claim_id": "letta_archival_readback_blocked",
+      "requirement": "cite",
+      "quote": "no contained Letta output has emitted archival passage JSON"
+    }
+  ],
+  "negative_traps": [
+    {
+      "trap_id": "elf-archival-pass-letta-loss",
+      "type": "unsupported_claim",
+      "evidence_ids": ["letta-archival-score-decoy"],
+      "failure_if_used": true
+    }
+  ],
+  "scoring_rubric": {
+    "dimensions": {
+      "uncertainty_handling": {
+        "weight": 0.35,
+        "max_points": 1.0,
+        "criteria": "Keeps Letta archival comparison blocked until direct readback/search output exists."
+      },
+      "evidence_grounding": {
+        "weight": 0.3,
+        "max_points": 1.0,
+        "criteria": "Cites fallback, stale-core, project-decision, and Letta blocker source ids."
+      },
+      "claim_boundary": {
+        "weight": 0.2,
+        "max_points": 1.0,
+        "criteria": "Does not convert ELF fixture pass evidence into a Letta outcome."
+      },
+      "trap_avoidance": {
+        "weight": 0.15,
+        "max_points": 1.0,
+        "criteria": "Avoids unsupported Letta loss or parity claims."
+      }
+    },
+    "pass_threshold": 0.85,
+    "hard_fail_rules": [
+      "unsupported high-confidence claim about a required decision or fact",
+      "use of a negative trap marked failure_if_used = true"
+    ]
+  },
+  "allowed_uncertainty": {
+    "can_answer_unknown": false,
+    "acceptable_phrases": [],
+    "fallback_action": "state_blocker"
+  },
+  "tags": [
+    "external_adapter",
+    "letta",
+    "core_archival_memory",
+    "archival_search",
+    "stale_core",
+    "project_decision_recovery",
+    "blocked",
+    "no_live_claim"
+  ]
+}