signals

acquisitions

Read-only

List acquisition and merger events ordered by announcement date, newest first. Filter by payment type, deal amount range, merger flag, or a company that is the acquirer or target. Costs one credit per returned record.

Input Schema

TableJSON Schema

Name	Required	Description
`limit`	No	Maximum records to return (1-100). Each returned record costs one credit.
`since`	No	Return records announced on or after this date (YYYY-MM-DD) or ISO-8601 timestamp.
`until`	No	Return records announced on or before this date (YYYY-MM-DD, inclusive) or ISO-8601 timestamp.
`cursor`	No	Opaque pagination cursor returned as pagination.nextCursor on the previous page.
`domain`	No	Company domain, e.g. stripe.com. Matches the company's primary domain or any domain it redirected from; a full URL works too.
`isMerger`	No	Filter to mergers (true) or acquisitions (false).
`companyId`	No	Return only events where this company is the acquirer or target.
`countries`	No	Headquarters country codes (ISO alpha-2, OR). Pass "unknown" to include companies with no country on file.
`naicsCode`	No	NAICS 2022 code for the target (acquired) company. Matches the code and everything beneath it, so "51" also returns 5132 and 5173. Sector ranges work: "31-33" returns all manufacturing. Any 2- to 6-digit code is accepted; codes deeper than we classify (e.g. 541511) match at their deepest classified parent (5415).
`verticals`	No	Target company sector filters (OR). Canonical values: ai, fintech, saas, devtools, healthcare, climate, robotics, cybersecurity, logistics, commerce, data, crypto, media, education, marketing, telecom, realestate, hardware, gaming, space.
`paymentType`	No	Payment type filters. Canonical values: cash, stock, mixed, undisclosed.
`includeTotal`	No	Also return pagination.total, the number of records matching these filters across all pages. Costs no credits.
`maxAmountUsd`	No	Maximum deal amount in USD.
`minAmountUsd`	No	Minimum deal amount in USD.
`industryGroups`	No	Company industry groups (OR). LinkedIn industry labels, matched case-insensitively; older LinkedIn names and short forms like "software" map to the current label. Pass "unknown" for companies with no industry on file.

Schema Changelog

Changes observed during successful MCP inspections.

Changed5 schema fields changedSep 29, 2026

addedInput schema / properties / domain

Added value: +{
+  "description": "Company domain, e.g. stripe.com. Matches the company's primary domain or any domain it redirected from; a full URL works too.",
+  "maxLength": 253,
+  "type": "string"
+}

addedInput schema / properties / includeTotal

Added value: +{
+  "description": "Also return pagination.total, the number of records matching these filters across all pages. Costs no credits.",
+  "type": "boolean"
+}

changedInput schema / properties / industryGroups / description

Previous value: -"Company industry groups (OR). Matched literally against the LinkedIn labels. Pass \"unknown\" for companies with no industry on file."New value: +"Company industry groups (OR). LinkedIn industry labels, matched case-insensitively; older LinkedIn names and short forms like \"software\" map to the current label. Pass \"unknown\" for companies with no industry on file."

changedInput schema / properties / naicsCode / description

Previous value: -"NAICS 2022 code for the target (acquired) company. Matches the code and everything beneath it, so \"51\" also returns 5132 and 5173. Sector ranges work: \"31-33\" returns all manufacturing."New value: +"NAICS 2022 code for the target (acquired) company. Matches the code and everything beneath it, so \"51\" also returns 5132 and 5173. Sector ranges work: \"31-33\" returns all manufacturing. Any 2- to 6-digit code is accepted; codes deeper than we classify (e.g. 541511) match at their deepest classified parent (5415)."

removedInput schema / properties / naicsCode / enum

Removed value: -[
-  "11",
-  "21",
-  "22",
-  "23",
-  "42",
-  "51",
-  "52",
-  "53",
-  "54",
-  "56",
-  "71",
-  "81",
-  "92",
-  "111",
-  "113",
-  "114",
-  "212",
-  "236",
-  "238",
-  "311",
-  "313",
-  "315",
-  "316",
-  "321",
-  "322",
-  "323",
-  "325",
-  "327",
-  "331",
-  "332",
-  "335",
-  "336",
-  "337",
-  "458",
-  "482",
-  "483",
-  "484",
-  "485",
-  "493",
-  "519",
-  "532",
-  "562",
-  "611",
-  "621",
-  "622",
-  "623",
-  "712",
-  "721",
-  "722",
-  "811",
-  "812",
-  "813",
-  "1114",
-  "2111",
-  "2211",
-  "2213",
-  "2361",
-  "2382",
-  "3111",
-  "3115",
-  "3116",
-  "3117",
-  "3118",
-  "3121",
-  "3122",
-  "3162",
-  "3222",
-  "3253",
-  "3254",
-  "3255",
-  "3256",
-  "3261",
-  "3272",
-  "3323",
-  "3325",
-  "3328",
-  "3331",
-  "3332",
-  "3334",
-  "3341",
-  "3342",
-  "3343",
-  "3344",
-  "3345",
-  "3351",
-  "3352",
-  "3353",
-  "3359",
-  "3361",
-  "3363",
-  "3364",
-  "3365",
-  "3366",
-  "3372",
-  "3391",
-  "3399",
-  "4231",
-  "4233",
-  "4234",
-  "4235",
-  "4236",
-  "4238",
-  "4244",
-  "4245",
-  "4246",
-  "4247",
-  "4248",
-  "4411",
-  "4441",
-  "4451",
-  "4491",
-  "4561",
-  "4571",
-  "4591",
-  "4593",
-  "4811",
-  "4851",
-  "4853",
-  "4921",
-  "5121",
-  "5122",
-  "5131",
-  "5132",
-  "5161",
-  "5162",
-  "5173",
-  "5192",
-  "5221",
-  "5231",
-  "5239",
-  "5241",
-  "5242",
-  "5311",
-  "5312",
-  "5322",
-  "5411",
-  "5412",
-  "5413",
-  "5414",
-  "5415",
-  "5416",
-  "5417",
-  "5418",
-  "5419",
-  "5511",
-  "5613",
-  "5614",
-  "5615",
-  "5616",
-  "5617",
-  "5621",
-  "6111",
-  "6113",
-  "6114",
-  "6115",
-  "6213",
-  "6214",
-  "6215",
-  "6216",
-  "6241",
-  "6242",
-  "6244",
-  "7111",
-  "7112",
-  "7115",
-  "7132",
-  "7139",
-  "7225",
-  "8111",
-  "8121",
-  "8123",
-  "8129",
-  "8131",
-  "8132",
-  "8134",
-  "8139",
-  "9211",
-  "9221",
-  "9281",
-  "unknown",
-  "31-33",
-  "44-45",
-  "48-49"
-]

Changed1 schema field changedAug 27, 2026

changedInput schema / properties / countries / items / enum

Previous value: -[
-  "unknown",
-  "AD",
-  "AE",
-  "AF",
-  "AG",
-  "AL",
-  "AM",
-  "AO",
-  "AR",
-  "AT",
-  "AU",
-  "AZ",
-  "BA",
-  "BB",
-  "BD",
-  "BE",
-  "BF",
-  "BG",
-  "BH",
-  "BI",
-  "BJ",
-  "BM",
-  "BN",
-  "BO",
-  "BR",
-  "BS",
-  "BT",
-  "BW",
-  "BY",
-  "BZ",
-  "CA",
-  "CD",
-  "CF",
-  "CG",
-  "CH",
-  "CI",
-  "CL",
-  "CM",
-  "CN",
-  "CO",
-  "CR",
-  "CU",
-  "CV",
-  "CY",
-  "CZ",
-  "DE",
-  "DJ",
-  "DK",
-  "DM",
-  "DO",
-  "DZ",
-  "EC",
-  "EE",
-  "EG",
-  "ER",
-  "ES",
-  "ET",
-  "FI",
-  "FJ",
-  "FM",
-  "FR",
-  "GA",
-  "GB",
-  "GD",
-  "GE",
-  "GG",
-  "GH",
-  "GI",
-  "GM",
-  "GN",
-  "GQ",
-  "GR",
-  "GT",
-  "GW",
-  "GY",
-  "HK",
-  "HN",
-  "HR",
-  "HT",
-  "HU",
-  "ID",
-  "IE",
-  "IL",
-  "IM",
-  "IN",
-  "IQ",
-  "IR",
-  "IS",
-  "IT",
-  "JE",
-  "JM",
-  "JO",
-  "JP",
-  "KE",
-  "KG",
-  "KH",
-  "KI",
-  "KM",
-  "KN",
-  "KP",
-  "KR",
-  "KW",
-  "KY",
-  "KZ",
-  "LA",
-  "LB",
-  "LC",
-  "LI",
-  "LK",
-  "LR",
-  "LS",
-  "LT",
-  "LU",
-  "LV",
-  "LY",
-  "MA",
-  "MC",
-  "MD",
-  "ME",
-  "MG",
-  "MH",
-  "MK",
-  "ML",
-  "MM",
-  "MN",
-  "MO",
-  "MR",
-  "MT",
-  "MU",
-  "MV",
-  "MW",
-  "MX",
-  "MY",
-  "MZ",
-  "NA",
-  "NE",
-  "NG",
-  "NI",
-  "NL",
-  "NO",
-  "NP",
-  "NR",
-  "NZ",
-  "OM",
-  "PA",
-  "PG",
-  "PH",
-  "PK",
-  "PL",
-  "PR",
-  "PS",
-  "PT",
-  "PW",
-  "PY",
-  "QA",
-  "RO",
-  "RS",
-  "RU",
-  "RW",
-  "SA",
-  "SB",
-  "SC",
-  "SD",
-  "SE",
-  "SG",
-  "SI",
-  "SK",
-  "SL",
-  "SM",
-  "SN",
-  "SO",
-  "SR",
-  "SS",
-  "ST",
-  "SV",
-  "SY",
-  "SZ",
-  "TD",
-  "TG",
-  "TH",
-  "TJ",
-  "TL",
-  "TM",
-  "TN",
-  "TO",
-  "TR",
-  "TT",
-  "TV",
-  "TW",
-  "TZ",
-  "UA",
-  "UG",
-  "US",
-  "UY",
-  "UZ",
-  "VA",
-  "VC",
-  "VE",
-  "VG",
-  "VN",
-  "VU",
-  "WS",
-  "YE",
-  "ZA",
-  "ZM",
-  "ZW"
-]New value: +[
+  "unknown",
+  "AD",
+  "AE",
+  "AF",
+  "AG",
+  "AI",
+  "AL",
+  "AM",
+  "AO",
+  "AR",
+  "AS",
+  "AT",
+  "AU",
+  "AW",
+  "AX",
+  "AZ",
+  "BA",
+  "BB",
+  "BD",
+  "BE",
+  "BF",
+  "BG",
+  "BH",
+  "BI",
+  "BJ",
+  "BL",
+  "BM",
+  "BN",
+  "BO",
+  "BQ",
+  "BR",
+  "BS",
+  "BT",
+  "BW",
+  "BY",
+  "BZ",
+  "CA",
+  "CD",
+  "CF",
+  "CG",
+  "CH",
+  "CI",
+  "CK",
+  "CL",
+  "CM",
+  "CN",
+  "CO",
+  "CR",
+  "CU",
+  "CV",
+  "CW",
+  "CY",
+  "CZ",
+  "DE",
+  "DJ",
+  "DK",
+  "DM",
+  "DO",
+  "DZ",
+  "EC",
+  "EE",
+  "EG",
+  "EH",
+  "ER",
+  "ES",
+  "ET",
+  "FI",
+  "FJ",
+  "FK",
+  "FM",
+  "FO",
+  "FR",
+  "GA",
+  "GB",
+  "GD",
+  "GE",
+  "GF",
+  "GG",
+  "GH",
+  "GI",
+  "GL",
+  "GM",
+  "GN",
+  "GP",
+  "GQ",
+  "GR",
+  "GT",
+  "GU",
+  "GW",
+  "GY",
+  "HK",
+  "HN",
+  "HR",
+  "HT",
+  "HU",
+  "ID",
+  "IE",
+  "IL",
+  "IM",
+  "IN",
+  "IQ",
+  "IR",
+  "IS",
+  "IT",
+  "JE",
+  "JM",
+  "JO",
+  "JP",
+  "KE",
+  "KG",
+  "KH",
+  "KI",
+  "KM",
+  "KN",
+  "KP",
+  "KR",
+  "KW",
+  "KY",
+  "KZ",
+  "LA",
+  "LB",
+  "LC",
+  "LI",
+  "LK",
+  "LR",
+  "LS",
+  "LT",
+  "LU",
+  "LV",
+  "LY",
+  "MA",
+  "MC",
+  "MD",
+  "ME",
+  "MF",
+  "MG",
+  "MH",
+  "MK",
+  "ML",
+  "MM",
+  "MN",
+  "MO",
+  "MP",
+  "MQ",
+  "MR",
+  "MS",
+  "MT",
+  "MU",
+  "MV",
+  "MW",
+  "MX",
+  "MY",
+  "MZ",
+  "NA",
+  "NC",
+  "NE",
+  "NG",
+  "NI",
+  "NL",
+  "NO",
+  "NP",
+  "NR",
+  "NU",
+  "NZ",
+  "OM",
+  "PA",
+  "PE",
+  "PF",
+  "PG",
+  "PH",
+  "PK",
+  "PL",
+  "PM",
+  "PR",
+  "PS",
+  "PT",
+  "PW",
+  "PY",
+  "QA",
+  "RE",
+  "RO",
+  "RS",
+  "RU",
+  "RW",
+  "SA",
+  "SB",
+  "SC",
+  "SD",
+  "SE",
+  "SG",
+  "SH",
+  "SI",
+  "SK",
+  "SL",
+  "SM",
+  "SN",
+  "SO",
+  "SR",
+  "SS",
+  "ST",
+  "SV",
+  "SX",
+  "SY",
+  "SZ",
+  "TC",
+  "TD",
+  "TG",
+  "TH",
+  "TJ",
+  "TK",
+  "TL",
+  "TM",
+  "TN",
+  "TO",
+  "TR",
+  "TT",
+  "TV",
+  "TW",
+  "TZ",
+  "UA",
+  "UG",
+  "US",
+  "UY",
+  "UZ",
+  "VA",
+  "VC",
+  "VE",
+  "VG",
+  "VI",
+  "VN",
+  "VU",
+  "WF",
+  "WS",
+  "YE",
+  "YT",
+  "ZA",
+  "ZM",
+  "ZW"
+]

Changed1 schema field changedAug 26, 2026

addedInput schema / properties / countries / items / enum

Added value: +[
+  "unknown",
+  "AD",
+  "AE",
+  "AF",
+  "AG",
+  "AL",
+  "AM",
+  "AO",
+  "AR",
+  "AT",
+  "AU",
+  "AZ",
+  "BA",
+  "BB",
+  "BD",
+  "BE",
+  "BF",
+  "BG",
+  "BH",
+  "BI",
+  "BJ",
+  "BM",
+  "BN",
+  "BO",
+  "BR",
+  "BS",
+  "BT",
+  "BW",
+  "BY",
+  "BZ",
+  "CA",
+  "CD",
+  "CF",
+  "CG",
+  "CH",
+  "CI",
+  "CL",
+  "CM",
+  "CN",
+  "CO",
+  "CR",
+  "CU",
+  "CV",
+  "CY",
+  "CZ",
+  "DE",
+  "DJ",
+  "DK",
+  "DM",
+  "DO",
+  "DZ",
+  "EC",
+  "EE",
+  "EG",
+  "ER",
+  "ES",
+  "ET",
+  "FI",
+  "FJ",
+  "FM",
+  "FR",
+  "GA",
+  "GB",
+  "GD",
+  "GE",
+  "GG",
+  "GH",
+  "GI",
+  "GM",
+  "GN",
+  "GQ",
+  "GR",
+  "GT",
+  "GW",
+  "GY",
+  "HK",
+  "HN",
+  "HR",
+  "HT",
+  "HU",
+  "ID",
+  "IE",
+  "IL",
+  "IM",
+  "IN",
+  "IQ",
+  "IR",
+  "IS",
+  "IT",
+  "JE",
+  "JM",
+  "JO",
+  "JP",
+  "KE",
+  "KG",
+  "KH",
+  "KI",
+  "KM",
+  "KN",
+  "KP",
+  "KR",
+  "KW",
+  "KY",
+  "KZ",
+  "LA",
+  "LB",
+  "LC",
+  "LI",
+  "LK",
+  "LR",
+  "LS",
+  "LT",
+  "LU",
+  "LV",
+  "LY",
+  "MA",
+  "MC",
+  "MD",
+  "ME",
+  "MG",
+  "MH",
+  "MK",
+  "ML",
+  "MM",
+  "MN",
+  "MO",
+  "MR",
+  "MT",
+  "MU",
+  "MV",
+  "MW",
+  "MX",
+  "MY",
+  "MZ",
+  "NA",
+  "NE",
+  "NG",
+  "NI",
+  "NL",
+  "NO",
+  "NP",
+  "NR",
+  "NZ",
+  "OM",
+  "PA",
+  "PG",
+  "PH",
+  "PK",
+  "PL",
+  "PR",
+  "PS",
+  "PT",
+  "PW",
+  "PY",
+  "QA",
+  "RO",
+  "RS",
+  "RU",
+  "RW",
+  "SA",
+  "SB",
+  "SC",
+  "SD",
+  "SE",
+  "SG",
+  "SI",
+  "SK",
+  "SL",
+  "SM",
+  "SN",
+  "SO",
+  "SR",
+  "SS",
+  "ST",
+  "SV",
+  "SY",
+  "SZ",
+  "TD",
+  "TG",
+  "TH",
+  "TJ",
+  "TL",
+  "TM",
+  "TN",
+  "TO",
+  "TR",
+  "TT",
+  "TV",
+  "TW",
+  "TZ",
+  "UA",
+  "UG",
+  "US",
+  "UY",
+  "UZ",
+  "VA",
+  "VC",
+  "VE",
+  "VG",
+  "VN",
+  "VU",
+  "WS",
+  "YE",
+  "ZA",
+  "ZM",
+  "ZW"
+]

Changed3 schema fields changedAug 26, 2026

addedInput schema / properties / countries

Added value: +{
+  "description": "Headquarters country codes (ISO alpha-2, OR). Pass \"unknown\" to include companies with no country on file.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

addedInput schema / properties / industryGroups

Added value: +{
+  "description": "Company industry groups (OR). Matched literally against the LinkedIn labels. Pass \"unknown\" for companies with no industry on file.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

addedInput schema / properties / until

Added value: +{
+  "description": "Return records announced on or before this date (YYYY-MM-DD, inclusive) or ISO-8601 timestamp.",
+  "type": "string"
+}

Changed1 schema field changedAug 20, 2026

addedInput schema / properties / naicsCode

Added value: +{
+  "description": "NAICS 2022 code for the target (acquired) company. Matches the code and everything beneath it, so \"51\" also returns 5132 and 5173. Sector ranges work: \"31-33\" returns all manufacturing.",
+  "enum": [
+    "11",
+    "21",
+    "22",
+    "23",
+    "42",
+    "51",
+    "52",
+    "53",
+    "54",
+    "56",
+    "71",
+    "81",
+    "92",
+    "111",
+    "113",
+    "114",
+    "212",
+    "236",
+    "238",
+    "311",
+    "313",
+    "315",
+    "316",
+    "321",
+    "322",
+    "323",
+    "325",
+    "327",
+    "331",
+    "332",
+    "335",
+    "336",
+    "337",
+    "458",
+    "482",
+    "483",
+    "484",
+    "485",
+    "493",
+    "519",
+    "532",
+    "562",
+    "611",
+    "621",
+    "622",
+    "623",
+    "712",
+    "721",
+    "722",
+    "811",
+    "812",
+    "813",
+    "1114",
+    "2111",
+    "2211",
+    "2213",
+    "2361",
+    "2382",
+    "3111",
+    "3115",
+    "3116",
+    "3117",
+    "3118",
+    "3121",
+    "3122",
+    "3162",
+    "3222",
+    "3253",
+    "3254",
+    "3255",
+    "3256",
+    "3261",
+    "3272",
+    "3323",
+    "3325",
+    "3328",
+    "3331",
+    "3332",
+    "3334",
+    "3341",
+    "3342",
+    "3343",
+    "3344",
+    "3345",
+    "3351",
+    "3352",
+    "3353",
+    "3359",
+    "3361",
+    "3363",
+    "3364",
+    "3365",
+    "3366",
+    "3372",
+    "3391",
+    "3399",
+    "4231",
+    "4233",
+    "4234",
+    "4235",
+    "4236",
+    "4238",
+    "4244",
+    "4245",
+    "4246",
+    "4247",
+    "4248",
+    "4411",
+    "4441",
+    "4451",
+    "4491",
+    "4561",
+    "4571",
+    "4591",
+    "4593",
+    "4811",
+    "4851",
+    "4853",
+    "4921",
+    "5121",
+    "5122",
+    "5131",
+    "5132",
+    "5161",
+    "5162",
+    "5173",
+    "5192",
+    "5221",
+    "5231",
+    "5239",
+    "5241",
+    "5242",
+    "5311",
+    "5312",
+    "5322",
+    "5411",
+    "5412",
+    "5413",
+    "5414",
+    "5415",
+    "5416",
+    "5417",
+    "5418",
+    "5419",
+    "5511",
+    "5613",
+    "5614",
+    "5615",
+    "5616",
+    "5617",
+    "5621",
+    "6111",
+    "6113",
+    "6114",
+    "6115",
+    "6213",
+    "6214",
+    "6215",
+    "6216",
+    "6241",
+    "6242",
+    "6244",
+    "7111",
+    "7112",
+    "7115",
+    "7132",
+    "7139",
+    "7225",
+    "8111",
+    "8121",
+    "8123",
+    "8129",
+    "8131",
+    "8132",
+    "8134",
+    "8139",
+    "9211",
+    "9221",
+    "9281",
+    "unknown",
+    "31-33",
+    "44-45",
+    "48-49"
+  ],
+  "type": "string"
+}

Changed1 schema field changedAug 20, 2026
- addedInput schema / properties / paymentType / items / enum
```
Added value: +[
+  "cash",
+  "stock",
+  "mixed",
+  "undisclosed"
+]
```

Changed1 schema field changedAug 9, 2026

changedInput schema / properties / verticals / description

Previous value: -"Target company sector filters (OR). Canonical values: ai, fintech, saas, devtools, healthcare, climate, robotics, cybersecurity, logistics, commerce, data, crypto."New value: +"Target company sector filters (OR). Canonical values: ai, fintech, saas, devtools, healthcare, climate, robotics, cybersecurity, logistics, commerce, data, crypto, media, education, marketing, telecom, realestate, hardware, gaming, space."

Changed1 schema field changedJul 27, 2026

changedInput schema / properties / since / description

Previous value: -"Return records discovered/announced on or after this date (YYYY-MM-DD) or ISO-8601 timestamp."New value: +"Return records announced on or after this date (YYYY-MM-DD) or ISO-8601 timestamp."

Changed1 schema field changedJul 24, 2026

addedInput schema / properties / verticals

Added value: +{
+  "description": "Target company sector filters (OR). Canonical values: ai, fintech, saas, devtools, healthcare, climate, robotics, cybersecurity, logistics, commerce, data, crypto.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

Changed1 schema field changedJul 4, 2026

changedInput schema / properties / since / description

Previous value: -"Return records discovered/announced after this ISO-8601 timestamp."New value: +"Return records discovered/announced on or after this date (YYYY-MM-DD) or ISO-8601 timestamp."

First observedJun 28, 2026

TDQS

A4/5.0

Behavior4/5

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

Annotation already declares readOnlyHint=true, so safety profile is covered. The description adds the essential cost model ('Costs one credit per returned record'), which is not in the annotations and materially affects how an agent should size page limits and use includeTotal.

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 tight sentences: the first establishes resource, ordering, and filters; the second states the cost. Nothing wasted and the ordering constraint is front-loaded.

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 15-param list tool with full schema coverage and no output schema, the description covers purpose, ordering, filters, and the cost model. Minor gaps are pagination behavior (cursor/nextCursor) and there being no default limit mentioned, but the schema handles those.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already carries full parameter meaning. The description only lists filter categories, adding no syntax, format, or default detail beyond the schema. Baseline 3 applies.

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?

States a specific verb (List), resource (acquisition and merger events), and the default ordering (announcement date, newest first). Distinguishes itself from siblings like funding_events and companies by scoping to M&A events.

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

Usage Guidelines3/5

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

Implied usage is clear from filters listed ('Filter by payment type, deal amount range, merger flag, or a company that is the acquirer or target'), but no explicit when-to-use-vs-alternatives guidance and no exclusion conditions are stated. The sibling funding_events isn't referenced.

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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