invest-like: Buffett-style stock analysis

Find stocks by a rule

find_stocks

Read-onlyIdempotent

Use this when the user asks for stock ideas or a list by a rule: stocks that meet an investor's published rules (rulebook: buffett (Warren Buffett), munger (Charlie Munger), graham (Benjamin Graham), fisher (Philip Fisher), lynch (Peter Lynch), greenblatt (Joel Greenblatt), smith (Terry Smith)), one of invest-like's published daily lists (list), or number filters such as P/E below 15, net margin above 20%, dividend yield above 3%, sales growth above 10%, with an optional sector, country and halal-only. Use exactly one of rulebook, list or filters. Lists come only from invest-like's data, never from memory. Results are screen results, not recommendations.

Input Schema

Name	Required	Description
`list`	No	One of invest-like's published lists: strongest-moat, highest-roic, cheapest-pe, cheapest-peg, highest-fcf-yield, safest-dividend, lowest-debt, highest-gross-margin, highest-buyback-yield, halal-top-picks, magic-formula-top-30, consistent-compounders
`sort`	No	For filters: the figure to sort by (default market value)
`limit`	No	How many to show (default 10)
`order`	No
`sector`	No
`country`	No	Two-letter country code, e.g. US, DE, GB
`filters`	No
`rulebook`	No	Stocks that meet this investor's published rules, e.g. 'graham' for 'stocks that pass Benjamin Graham's rules'
`halal_only`	No	Only stocks that pass the halal screen

Schema Changelog

Changes observed during successful MCP inspections.

Changed11 schema fields changedNov 2, 2026

addedInput schema / properties / country

Added value: +{
+  "description": "Two-letter country code, e.g. US, DE, GB",
+  "maxLength": 2,
+  "minLength": 2,
+  "type": "string"
+}

addedInput schema / properties / filters

Added value: +{
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "metric": {
+        "enum": [
+          "market_value",
+          "pe",
+          "net_margin",
+          "gross_margin",
+          "sales_growth",
+          "return_on_capital",
+          "dividend_yield",
+          "net_debt_to_ebitda",
+          "return_1y"
+        ],
+        "type": "string"
+      },
+      "op": {
+        "enum": [
+          "above",
+          "below"
+        ],
+        "type": "string"
+      },
+      "value": {
+        "description": "Percent metrics in percent (20 = 20%), market value in USD, P/E and net debt / EBITDA as plain numbers",
+        "type": "number"
+      }
+    },
+    "required": [
+      "metric",
+      "op",
+      "value"
+    ],
+    "type": "object"
+  },
+  "maxItems": 4,
+  "type": "array"
+}

addedInput schema / properties / halal_only

Added value: +{
+  "description": "Only stocks that pass the halal screen",
+  "type": "boolean"
+}

changedInput schema / properties / limit / description

Previous value: -"How many to show (default 12)"New value: +"How many to show (default 10)"

changedInput schema / properties / limit / maximum
```
Previous value: -30New value: +20
```

changedInput schema / properties / list / description

Previous value: -"Which ranking: strongest-moat, highest-roic, cheapest-pe, cheapest-peg, highest-fcf-yield, safest-dividend, lowest-debt, highest-gross-margin, highest-buyback-yield, halal-top-picks, magic-formula-top-30, consistent-compounders"New value: +"One of invest-like's published lists: strongest-moat, highest-roic, cheapest-pe, cheapest-peg, highest-fcf-yield, safest-dividend, lowest-debt, highest-gross-margin, highest-buyback-yield, halal-top-picks, magic-formula-top-30, consistent-compounders"

addedInput schema / properties / order

Added value: +{
+  "enum": [
+    "highest",
+    "lowest"
+  ],
+  "type": "string"
+}

addedInput schema / properties / rulebook

Added value: +{
+  "description": "Stocks that meet this investor's published rules, e.g. 'graham' for 'stocks that pass Benjamin Graham's rules'",
+  "enum": [
+    "buffett",
+    "munger",
+    "graham",
+    "fisher",
+    "lynch",
+    "greenblatt",
+    "smith"
+  ],
+  "type": "string"
+}

addedInput schema / properties / sector

Added value: +{
+  "enum": [
+    "technology",
+    "financials",
+    "healthcare",
+    "consumer-staples",
+    "consumer-discretionary",
+    "communication-services",
+    "industrials",
+    "energy",
+    "utilities",
+    "real-estate",
+    "materials"
+  ],
+  "type": "string"
+}

addedInput schema / properties / sort

Added value: +{
+  "description": "For filters: the figure to sort by (default market value)",
+  "enum": [
+    "market_value",
+    "pe",
+    "net_margin",
+    "gross_margin",
+    "sales_growth",
+    "return_on_capital",
+    "dividend_yield",
+    "net_debt_to_ebitda",
+    "return_1y"
+  ],
+  "type": "string"
+}

removedInput schema / required
```
Removed value: -[
-  "list"
-]
```

Changed6 schema fields changedOct 31, 2026

removedInput schema / properties / investor

Removed value: -{
-  "description": "Set when the user asks about one investor, e.g. 'buffett'",
-  "enum": [
-    "buffett",
-    "munger",
-    "graham",
-    "fisher",
-    "lynch",
-    "greenblatt",
-    "smith"
-  ],
-  "type": "string"
-}

addedInput schema / properties / list

Added value: +{
+  "description": "Which ranking: strongest-moat, highest-roic, cheapest-pe, cheapest-peg, highest-fcf-yield, safest-dividend, lowest-debt, highest-gross-margin, highest-buyback-yield, halal-top-picks, magic-formula-top-30, consistent-compounders",
+  "enum": [
+    "highest-roic",
+    "cheapest-pe",
+    "highest-fcf-yield",
+    "safest-dividend",
+    "strongest-moat",
+    "lowest-debt",
+    "highest-gross-margin",
+    "cheapest-peg",
+    "highest-buyback-yield",
+    "halal-top-picks",
+    "magic-formula-top-30",
+    "consistent-compounders"
+  ],
+  "type": "string"
+}

removedInput schema / properties / min_investors

Removed value: -{
-  "description": "Only when no investor is named: minimum of the 7 who would buy. Leave empty for the default (5).",
-  "maximum": 7,
-  "minimum": 1,
-  "type": "integer"
-}

removedInput schema / properties / sector

Removed value: -{
-  "description": "Optional sector, e.g. 'Technology', 'Healthcare', 'Financial'",
-  "maxLength": 40,
-  "type": "string"
-}

removedInput schema / properties / universe

Removed value: -{
-  "description": "sp500 (default), us, or global",
-  "enum": [
-    "sp500",
-    "us",
-    "global"
-  ],
-  "type": "string"
-}

addedInput schema / required
```
Added value: +[
+  "list"
+]
```

First observedOct 13, 2026

TDQS

A4.5/5.0

Behavior4/5

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

Annotations already declare a safe, idempotent, closed-world read, so the description's added value is the provenance constraint and the caveat 'Results are screen results, not recommendations' — a genuinely useful expectation-setting statement. It does not say what happens on violating the exactly-one rule or what a result record looks like, keeping it below a 5.

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?

Front-loaded with the trigger condition and mutual-exclusion rule, followed by compact mode descriptions and a disclaimer. The parenthetical rulebook enumeration is dense but every clause carries routing or unit information; nothing is filler.

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?

For a 9-parameter, all-optional screening tool with no output schema, the description covers the three mutually exclusive modes, filter units, optional narrowing dimensions, and result framing. It stops short of describing result contents or pagination/limit behavior, which matters given no output schema.

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 coverage is 67%, and the description compensates by expanding each rulebook enum value with the investor's full name and by giving concrete filter examples with units ('P/E below 15, net margin above 20%', 'sales growth above 10%'). It leaves sort, order, and limit unmentioned, which the schema partially covers.

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?

Opens with a specific verb+resource plus the triggering condition ('stock ideas or a list by a rule'), then enumerates the three screening modes (rulebook, list, filters). The 'list of stocks' framing implicitly separates it from single-stock siblings like check_rulebook and check_value.

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

Usage Guidelines5/5

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

Gives explicit when-to-use ('user asks for stock ideas'), an explicit operating constraint ('Use exactly one of rulebook, list or filters'), and a data-provenance rule ('Lists come only from invest-like's data, never from memory'). It also conveys the semantics of what each mode returns.

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

All invest-like: Buffett-style stock analysis tools Inspect

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