context_files listlengths 96 96 | gold_output dict | metadata dict | prompt stringlengths 4.78k 5.01k | rubric dict | task_id stringlengths 19 31 | task_name stringlengths 28 47 | world_id stringclasses 1
value |
|---|---|---|---|---|---|---|---|
[
"task_files/cb100-001-helios-forge/01_corporate/001_corporate_control_register.md",
"task_files/cb100-001-helios-forge/01_corporate/002_corporate_executed_instrument.txt",
"task_files/cb100-001-helios-forge/01_corporate/003_corporate_correspondence.eml",
"task_files/cb100-001-helios-forge/01_corporate/004_cor... | {
"advice_markdown": "# Counsel advice — Project Daybreak battery acquisition\n\n## Executive assessment\n\nFor Helios Forge, Inc. matter CB-MA-2401, the review identified 16 source-supported exceptions requiring action before 2026-09-04. The assessment concerns BluePeak Battery Systems LLC and the supplied record fo... | {
"benchmark": "CounselBench-100",
"code_license": "Apache-2.0",
"data_license": "CC-BY-4.0",
"deadline": "2026-09-04T00:00:00",
"document_count": 96,
"jurisdiction": "Delaware",
"matter_number": "CB-MA-2401",
"mcp_commit": "9a96ea6e5913736f92b88345bf51caeaaa8e719f",
"mcp_package": "@modelcontextproto... | # Project Daybreak battery acquisition
You are acting as buyer-side transactions counsel for Helios Forge, Inc.. The partner responsible for this matter needs a defensible decision record before the next client call.
Matter: CB-MA-2401
Other party or authority: BluePeak Battery Systems LLC
Jurisdiction: Delaware
Venu... | {
"gates": [
"all_evidence_read_in_full",
"chain_of_custody_metadata_checked",
"findings_criteria_complete",
"memo_criteria_complete",
"deliverables_written_through_mcp"
],
"metadata_checks": 8,
"metric": "weighted_criteria_score",
"minimum_tool_calls": 109,
"required_deliverables": [
... | cb100-001-helios-forge | Project Daybreak battery acquisition | counselbench-filesystem-mcp-v1 |
[
"task_files/cb100-002-northstar-orbit/01_corporate/001_corporate_control_register.md",
"task_files/cb100-002-northstar-orbit/01_corporate/002_corporate_executed_instrument.txt",
"task_files/cb100-002-northstar-orbit/01_corporate/003_corporate_correspondence.eml",
"task_files/cb100-002-northstar-orbit/01_corpo... | {
"advice_markdown": "# Counsel advice — Project Sextant satellite software merger\n\n## Executive assessment\n\nFor Northstar Orbit plc matter CB-MA-2402, the review identified 16 source-supported exceptions requiring action before 2026-09-08. The assessment concerns Aster Vale Navigation Corp. and the supplied reco... | {
"benchmark": "CounselBench-100",
"code_license": "Apache-2.0",
"data_license": "CC-BY-4.0",
"deadline": "2026-09-08T00:00:00",
"document_count": 96,
"jurisdiction": "Delaware",
"matter_number": "CB-MA-2402",
"mcp_commit": "9a96ea6e5913736f92b88345bf51caeaaa8e719f",
"mcp_package": "@modelcontextproto... | # Project Sextant satellite software merger
You are acting as buyer-side transactions counsel for Northstar Orbit plc. A late document production changed the factual picture, and the matter team needs the entire record reconciled from first principles.
Matter: CB-MA-2402
Other party or authority: Aster Vale Navigatio... | {
"gates": [
"all_evidence_read_in_full",
"chain_of_custody_metadata_checked",
"findings_criteria_complete",
"memo_criteria_complete",
"deliverables_written_through_mcp"
],
"metadata_checks": 8,
"metric": "weighted_criteria_score",
"minimum_tool_calls": 109,
"required_deliverables": [
... | cb100-002-northstar-orbit | Project Sextant satellite software merger | counselbench-filesystem-mcp-v1 |
[
"task_files/cb100-003-lumen-health/01_corporate/001_corporate_control_register.md",
"task_files/cb100-003-lumen-health/01_corporate/002_corporate_executed_instrument.txt",
"task_files/cb100-003-lumen-health/01_corporate/003_corporate_correspondence.eml",
"task_files/cb100-003-lumen-health/01_corporate/004_cor... | {
"advice_markdown": "# Counsel advice — Project Orchard clinic platform purchase\n\n## Executive assessment\n\nFor Lumen Health Partners matter CB-MA-2403, the review identified 16 source-supported exceptions requiring action before 2026-09-11. The assessment concerns OrchardBridge Clinical Systems, Inc. and the sup... | {
"benchmark": "CounselBench-100",
"code_license": "Apache-2.0",
"data_license": "CC-BY-4.0",
"deadline": "2026-09-11T00:00:00",
"document_count": 96,
"jurisdiction": "New York",
"matter_number": "CB-MA-2403",
"mcp_commit": "9a96ea6e5913736f92b88345bf51caeaaa8e719f",
"mcp_package": "@modelcontextproto... | # Project Orchard clinic platform purchase
You are acting as buyer-side transactions counsel for Lumen Health Partners. The client has asked for a board-ready risk assessment supported by a source-level tracker rather than a narrative-only summary.
Matter: CB-MA-2403
Other party or authority: OrchardBridge Clinical S... | {
"gates": [
"all_evidence_read_in_full",
"chain_of_custody_metadata_checked",
"findings_criteria_complete",
"memo_criteria_complete",
"deliverables_written_through_mcp"
],
"metadata_checks": 8,
"metric": "weighted_criteria_score",
"minimum_tool_calls": 109,
"required_deliverables": [
... | cb100-003-lumen-health | Project Orchard clinic platform purchase | counselbench-filesystem-mcp-v1 |
[
"task_files/cb100-004-tamarack-foods/01_corporate/001_corporate_control_register.md",
"task_files/cb100-004-tamarack-foods/01_corporate/002_corporate_executed_instrument.txt",
"task_files/cb100-004-tamarack-foods/01_corporate/003_corporate_correspondence.eml",
"task_files/cb100-004-tamarack-foods/01_corporate... | {
"advice_markdown": "# Counsel advice — Project Copper Kettle food plant divestiture\n\n## Executive assessment\n\nFor Tamarack Foods Group matter CB-MA-2404, the review identified 16 source-supported exceptions requiring action before 2026-09-15. The assessment concerns Copper Kettle Nutrition Co. and the supplied ... | {
"benchmark": "CounselBench-100",
"code_license": "Apache-2.0",
"data_license": "CC-BY-4.0",
"deadline": "2026-09-15T00:00:00",
"document_count": 96,
"jurisdiction": "Illinois",
"matter_number": "CB-MA-2404",
"mcp_commit": "9a96ea6e5913736f92b88345bf51caeaaa8e719f",
"mcp_package": "@modelcontextproto... | # Project Copper Kettle food plant divestiture
You are acting as buyer-side transactions counsel for Tamarack Foods Group. Several workstreams have maintained separate versions of the truth; your assignment is to produce one auditable legal view.
Matter: CB-MA-2404
Other party or authority: Copper Kettle Nutrition Co... | {
"gates": [
"all_evidence_read_in_full",
"chain_of_custody_metadata_checked",
"findings_criteria_complete",
"memo_criteria_complete",
"deliverables_written_through_mcp"
],
"metadata_checks": 8,
"metric": "weighted_criteria_score",
"minimum_tool_calls": 109,
"required_deliverables": [
... | cb100-004-tamarack-foods | Project Copper Kettle food plant divestiture | counselbench-filesystem-mcp-v1 |
[
"task_files/cb100-005-solace-mobility/01_corporate/001_corporate_control_register.md",
"task_files/cb100-005-solace-mobility/01_corporate/002_corporate_executed_instrument.txt",
"task_files/cb100-005-solace-mobility/01_corporate/003_corporate_correspondence.eml",
"task_files/cb100-005-solace-mobility/01_corpo... | {
"advice_markdown": "# Counsel advice — Project Lantern fleet technology acquisition\n\n## Executive assessment\n\nFor Solace Mobility Holdings matter CB-MA-2405, the review identified 16 source-supported exceptions requiring action before 2026-09-18. The assessment concerns Lantern Route Analytics, Inc. and the sup... | {
"benchmark": "CounselBench-100",
"code_license": "Apache-2.0",
"data_license": "CC-BY-4.0",
"deadline": "2026-09-18T00:00:00",
"document_count": 96,
"jurisdiction": "California",
"matter_number": "CB-MA-2405",
"mcp_commit": "9a96ea6e5913736f92b88345bf51caeaaa8e719f",
"mcp_package": "@modelcontextpro... | # Project Lantern fleet technology acquisition
You are acting as buyer-side transactions counsel for Solace Mobility Holdings. Outside counsel inherited this file after turnover on the client team and must validate every operative record before advising.
Matter: CB-MA-2405
Other party or authority: Lantern Route Anal... | {
"gates": [
"all_evidence_read_in_full",
"chain_of_custody_metadata_checked",
"findings_criteria_complete",
"memo_criteria_complete",
"deliverables_written_through_mcp"
],
"metadata_checks": 8,
"metric": "weighted_criteria_score",
"minimum_tool_calls": 109,
"required_deliverables": [
... | cb100-005-solace-mobility | Project Lantern fleet technology acquisition | counselbench-filesystem-mcp-v1 |
["task_files/cb100-006-meridian-water/01_corporate/001_corporate_control_register.md","task_files/cb(...TRUNCATED) | {"advice_markdown":"# Counsel advice — Project Spillway treatment business acquisition\n\n## Execu(...TRUNCATED) | {"benchmark":"CounselBench-100","code_license":"Apache-2.0","data_license":"CC-BY-4.0","deadline":"2(...TRUNCATED) | "# Project Spillway treatment business acquisition\n\nYou are acting as buyer-side transactions coun(...TRUNCATED) | {"gates":["all_evidence_read_in_full","chain_of_custody_metadata_checked","findings_criteria_complet(...TRUNCATED) | cb100-006-meridian-water | Project Spillway treatment business acquisition | counselbench-filesystem-mcp-v1 |
["task_files/cb100-007-bracken-home/01_corporate/001_corporate_control_register.md","task_files/cb10(...TRUNCATED) | {"advice_markdown":"# Counsel advice — Project Hearth consumer products merger\n\n## Executive ass(...TRUNCATED) | {"benchmark":"CounselBench-100","code_license":"Apache-2.0","data_license":"CC-BY-4.0","deadline":"2(...TRUNCATED) | "# Project Hearth consumer products merger\n\nYou are acting as buyer-side transactions counsel for (...TRUNCATED) | {"gates":["all_evidence_read_in_full","chain_of_custody_metadata_checked","findings_criteria_complet(...TRUNCATED) | cb100-007-bracken-home | Project Hearth consumer products merger | counselbench-filesystem-mcp-v1 |
["task_files/cb100-008-cobalt-learning/01_corporate/001_corporate_control_register.md","task_files/c(...TRUNCATED) | {"advice_markdown":"# Counsel advice — Project Chalkboard education platform purchase\n\n## Execut(...TRUNCATED) | {"benchmark":"CounselBench-100","code_license":"Apache-2.0","data_license":"CC-BY-4.0","deadline":"2(...TRUNCATED) | "# Project Chalkboard education platform purchase\n\nYou are acting as buyer-side transactions couns(...TRUNCATED) | {"gates":["all_evidence_read_in_full","chain_of_custody_metadata_checked","findings_criteria_complet(...TRUNCATED) | cb100-008-cobalt-learning | Project Chalkboard education platform purchase | counselbench-filesystem-mcp-v1 |
["task_files/cb100-009-silverline-logistics/01_corporate/001_corporate_control_register.md","task_fi(...TRUNCATED) | {"advice_markdown":"# Counsel advice — Project Switchyard logistics roll-up\n\n## Executive assess(...TRUNCATED) | {"benchmark":"CounselBench-100","code_license":"Apache-2.0","data_license":"CC-BY-4.0","deadline":"2(...TRUNCATED) | "# Project Switchyard logistics roll-up\n\nYou are acting as buyer-side transactions counsel for Sil(...TRUNCATED) | {"gates":["all_evidence_read_in_full","chain_of_custody_metadata_checked","findings_criteria_complet(...TRUNCATED) | cb100-009-silverline-logistics | Project Switchyard logistics roll-up | counselbench-filesystem-mcp-v1 |
["task_files/cb100-010-verdant-grid/01_corporate/001_corporate_control_register.md","task_files/cb10(...TRUNCATED) | {"advice_markdown":"# Counsel advice — Project Canopy microgrid acquisition\n\n## Executive assess(...TRUNCATED) | {"benchmark":"CounselBench-100","code_license":"Apache-2.0","data_license":"CC-BY-4.0","deadline":"2(...TRUNCATED) | "# Project Canopy microgrid acquisition\n\nYou are acting as buyer-side transactions counsel for Ver(...TRUNCATED) | {"gates":["all_evidence_read_in_full","chain_of_custody_metadata_checked","findings_criteria_complet(...TRUNCATED) | cb100-010-verdant-grid | Project Canopy microgrid acquisition | counselbench-filesystem-mcp-v1 |
End of preview. Expand in Data Studio
CounselBench-100
CounselBench-100 is a synthetic long-horizon legal-agent benchmark with 100 distinct matters across ten practice workflows. Every task contains 96 production-style source records in 12 folders and has a 109-call reference MCP trajectory. The v1.1 grader reports a deterministic weighted criteria score across review procedure (25%), structured findings (55%), and memo grounding (20%); full task pass still requires every criterion.
Public release
- Runnable Harbor world: https://hub.harborframework.com/datasets/blobfishai/counselbench-100
- Dataset and test assets: https://huggingface.co/datasets/SamuelChien821/counselbench-100
- Benchmark page: https://blobfish.ai/benchmarks/counselbench-100
- Builder and verifier source: https://github.com/blobfishai/legal-agent-simulation/tree/master/benchmark/counselbench100
What is included
data/tasks.jsonl: Apex-compatible task records (task_id,task_name,world_id,prompt,context_files,rubric,gold_output,metadata).tasks/: one readable JSON record per matter.task_files/: 9,600 seeded evidence documents (md,txt,eml,csv,json,xml, andhtml).world/: the offline Streamable HTTP MCP world and deterministic verifier source.contracts/: pinned live contract snapshots for the official MCP filesystem server.tests/: conformance and full-suite test programs.SCORING.md: the versioned 182-criterion scoring contract and v1.0 correction rationale.EVALUATION_ARCHITECTURE.md: the runtime map to Archipelago/APEX and the intentional deterministic-grading differences.trajectories/andreports/: all 100 generated reference traces, ten published model transcripts with verifier reports, and measured pass/failure evidence.
Objective release gates
| Gate | Required |
|---|---|
| Tasks | 100 |
| Practice workflows | 10 |
| Source records per task | 96 |
| Reference MCP calls per task | 109 |
| LLM or network calls in verifier | 0 |
| Oracle passes | 100/100 |
| Shortcut, incomplete-read, and wrong-fact false accepts | 0 |
Measured results are stored in reports/qualification.json; do not infer a model score from the reference trajectory.
Deterministic v1.1 scoring
- Each task has 182 visible criteria: 8 procedure, 152 structured-findings, and 22 memo criteria.
- Each finding is graded field by field against record-control metadata exposed to the agent.
- Determinations must contain the seeded fact anchors and may not introduce controlled dates, amounts, percentages, addresses, or references absent from the cited source pair.
- Recommendations must preserve the seeded response deadline and remediation owner.
- Incomplete review procedure caps reward below 0.5, even when an output resembles the gold file.
- Full-output exact match is retained only as a diagnostic and does not erase legitimate partial credit.
MCP fidelity
The world exposes an allowlisted subset of @modelcontextprotocol/server-filesystem@2026.7.10 using the same tool names, input JSON Schema, annotations, content, and structuredContent result shapes. The upstream repository is pinned to commit 9a96ea6e5913736f92b88345bf51caeaaa8e719f. tests/conformance.py launches the real package and compares live behavior against the offline mock.
Data and contamination
Every person, entity, amount, address, event, and document is synthetic. The catalog was written for this release; Harvey Labs and Apex Accounting informed packaging and depth targets only. No Harvey or Apex task text, evidence, rubric, or gold answer is included. Gold outputs are public, as in Apex Accounting, so this release is appropriate for transparent evaluation and RL experiments rather than secret-test claims.
Licenses
Synthetic task data and documents are CC-BY-4.0. Benchmark code and test harnesses are Apache-2.0. Third-party MCP contract metadata remains subject to the upstream MIT license; provenance is recorded in contracts/upstream-pin.json.
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