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
`fills`	No
`queue`	No
`engine`	No
`period`	No
`reason`	No
`run_id`	No
`sharpe`	No
`status`	No
`trades`	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
`lot_method`	No
`gate_passed`	No
`trade_count`	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
`trade_detail_reason`	No
`trade_detail_status`	No
`not_investment_advice`	No
`trade_detail_persisted`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed7 schema fields changedOct 5, 2026

addedOutput schema / properties / fills

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

addedOutput schema / properties / lot_method

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

addedOutput schema / properties / trade_count

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

addedOutput schema / properties / trade_detail_persisted

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

addedOutput schema / properties / trade_detail_reason

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

addedOutput schema / properties / trade_detail_status

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

addedOutput schema / properties / trades

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

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

A4.1/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is covered. The description adds real behavioral context beyond that: namespace-scoped visibility and that a foreign run_id is silently 'not found' rather than erroring, plus that rejected-run reasoning is included in the payload.

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

Conciseness4/5

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

Two tight sentences with no filler, and the core action ('Retrieve a previous backtest by run_id') is front-loaded. The embedded line breaks and indentation read a bit awkwardly for the tool-description slot but cost no clarity.

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

Completeness5/5

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

An output schema exists, so return values need not be enumerated in prose. For a one-parameter read tool, the description covers the identifier format, its origin, the access-scoping rule, and the not-found behavior — nothing an agent needs to call it correctly is missing.

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

Parameters4/5

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

Schema description coverage is 0% — the single parameter is only typed as a string titled 'Run Id'. The description compensates well by naming the exact format ('`twmd_bt_…`') and its provenance (returned by run_backtest), which the schema does not convey.

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

Purpose4/5

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

The description gives a specific verb and resource ('Retrieve a previous backtest by run_id') plus the scope of the returned payload ('the full record, including why it was rejected'). It is clearly distinguishable from list_backtests and run_backtest by being a single-record fetch keyed on a run handle, though it never names those siblings explicitly.

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?

It states where the required argument comes from ('the `twmd_bt_…` handle returned by run_backtest'), which tells the agent when this tool is callable. The visibility constraint (only runs in YOUR namespace) is an explicit usage condition, but there is no stated when-not-to-use or named alternative.

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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