tw-market-data

Get a backtest result

get_backtest

Read-onlyIdempotent

Retrieve a previous backtest by run_id — the full record, including why it was rejected.

    Only runs in YOUR namespace are visible; a run_id belonging to someone else is simply not
    found. Args: run_id (the `twmd_bt_…` handle returned by run_backtest).

Input Schema

TableJSON Schema

Name	Required	Description	Default
`run_id`	Yes

Output Schema

TableJSON Schema

Name	Required	Description	Default
`cagr`	No
`hint`	No
`spec`	No
`as_of`	No
`costs`	No
`error`	No
`queue`	No
`engine`	No
`period`	No
`reason`	No
`run_id`	No
`sharpe`	No
`status`	No
`blocked`	No
`metrics`	No
`accepted`	No
`turnover`	No
`warnings`	No
`cache_hit`	No
`citations`	No
`data_gaps`	No
`poll_with`	No
`query_ids`	No
`job_status`	No
`gate_passed`	No
`bundle_trust`	No
`equity_curve`	No
`max_drawdown`	No
`bundle_version`	No
`engine_version`	No
`queue_position`	No
`interactive_cap`	No
`running_seconds`	No
`anti_overfitting`	No
`estimate_seconds`	No
`known_strategies`	No
`marketplace_card`	No
`equity_curve_base`	No
`persistence_error`	No
`rejection_reasons`	No
`run_id_resolvable`	No
`survivorship_safe`	No
`citations_persisted`	No
`not_investment_advice`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed3 schema fields changedSep 22, 2026

addedOutput schema / properties / costs

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Costs"
+}

addedOutput schema / properties / interactive_cap

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Interactive Cap"
+}

addedOutput schema / properties / marketplace_card

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Marketplace Card"
+}

Changed16 schema fields changedSep 20, 2026

addedOutput schema / properties / bundle_trust

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Bundle Trust"
+}

addedOutput schema / properties / bundle_version

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Bundle Version"
+}

addedOutput schema / properties / cache_hit

Added value: +{
+  "anyOf": [
+    {
+      "type": "boolean"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Cache Hit"
+}

addedOutput schema / properties / data_gaps

Added value: +{
+  "anyOf": [
+    {
+      "type": "integer"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Data Gaps"
+}

addedOutput schema / properties / engine

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Engine"
+}

addedOutput schema / properties / engine_version

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Engine Version"
+}

addedOutput schema / properties / equity_curve

Added value: +{
+  "anyOf": [
+    {
+      "items": {
+        "items": {},
+        "type": "array"
+      },
+      "type": "array"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Equity Curve"
+}

addedOutput schema / properties / equity_curve_base

Added value: +{
+  "anyOf": [
+    {
+      "type": "number"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Equity Curve Base"
+}

addedOutput schema / properties / estimate_seconds

Added value: +{
+  "anyOf": [
+    {
+      "type": "integer"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Estimate Seconds"
+}

addedOutput schema / properties / job_status

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Job Status"
+}

addedOutput schema / properties / metrics

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Metrics"
+}

addedOutput schema / properties / poll_with

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Poll With"
+}

addedOutput schema / properties / queue

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Queue"
+}

addedOutput schema / properties / queue_position

Added value: +{
+  "anyOf": [
+    {
+      "type": "integer"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Queue Position"
+}

addedOutput schema / properties / running_seconds

Added value: +{
+  "anyOf": [
+    {
+      "type": "integer"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Running Seconds"
+}

addedOutput schema / properties / spec

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Spec"
+}

Changed1 schema field changedSep 19, 2026

addedOutput schema / properties / citations_persisted

Added value: +{
+  "anyOf": [
+    {
+      "type": "boolean"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Citations Persisted"
+}

Changed2 schema fields changedSep 19, 2026

addedOutput schema / properties / persistence_error

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Persistence Error"
+}

addedOutput schema / properties / run_id_resolvable

Added value: +{
+  "anyOf": [
+    {
+      "type": "boolean"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Run Id Resolvable"
+}

AddedAug 19, 2026

TDQS

A4.5/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, destructiveHint=false. The description adds value by revealing that the result includes 'why it was rejected' and that a run_id outside your namespace returns 'not found' rather than an error. This goes beyond the safety profile, though it doesn't cover potential timeouts or partial results. No contradiction with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, front-loaded with the primary action and outcome, then the namespace caveat. No filler; every word earns its place. The format example is compact and immediately actionable.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present (as indicated by context signals), the description doesn't need to detail return fields. It covers the key inputs, the namespace behavior, and the rejection-reason detail. It could mention behavior for malformed run_ids or in-progress runs, but for a simple retrieve tool this is largely complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema only provides type and title for run_id (coverage 0%), but the description supplies the critical detail that run_id is the 'twmd_bt_…' handle returned by run_backtest. This is essential for correct invocation and completely compensates for the empty schema description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states 'Retrieve a previous backtest by run_id' — a specific verb, resource, and key. It distinguishes from siblings: list_backtests (listing) and run_backtest (creating), and mentions 'full record' including rejection reason, which sets it apart from a simple fetch.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides clear context: 'Only runs in YOUR namespace are visible' and explains that foreign run_ids are 'simply not found'. This guides usage to only your own runs. It doesn't explicitly name alternatives like list_backtests, but the scoping is implied. A 4 is appropriate because it gives actionable context without explicit when-not-to-use.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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