HireJack

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Get Company History

get_company_history

Read-only

Retrieve monthly snapshots of a company's hiring profile, including job counts, salaries, and skill trends. Track hiring changes and growth over time.

Instructions

Time-series of a company's hiring profile. Analyst tier. Returns monthly snapshots (totalJobs, engineeringJobs, medianSalary, hiringTrend, trendPct, top skills, seniority + family distribution) plus the wider monthlyPostings job-count series and current-state summary. Use for 'how has Anthropic's hiring changed since January?' or 'is Stripe growing or shrinking?'. Not for a current-state snapshot (get_company_profile) or side-by-side comparison (compare_companies).

Input Schema

TableJSON Schema

Name	Required	Description	Default
`domain`	Yes	Company domain (e.g. 'stripe.com')
`months`	No	Months of history to return (default 12, max 24). Note: detailed monthly snapshots only began March 2026, so depth is currently capped by available history.

Output Schema

TableJSON Schema

Name	Required	Description
`data`	Yes	Monthly hiring history plus current state for one company
`meta`	No	Request/response metadata (pagination cursors, snapshot timestamps, applied filters)
`citation_url`	No	hirejack.com URL to cite when surfacing this result

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedv0.3.5Jul 17, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "citation_url": {
+      "description": "hirejack.com URL to cite when surfacing this result",
+      "type": "string"
+    },
+    "data": {
+      "additionalProperties": true,
+      "description": "Monthly hiring history plus current state for one company",
+      "properties": {
+        "companyName": {
+          "type": "string"
+        },
+        "current": {
+          "additionalProperties": true,
+          "description": "Company's current hiring state",
+          "properties": {
+            "hiringTrend": {
+              "description": "'up' | 'down' | 'stable'",
+              "type": "string"
+            },
+            "medianSalary": {
+              "description": "Median disclosed salary (annual USD), when enough postings disclose pay",
+              "nullable": true,
+              "type": "number"
+            },
+            "totalJobs": {
+              "type": "number"
+            },
+            "trendPct": {
+              "description": "Trend magnitude, % change",
+              "type": "number"
+            }
+          },
+          "type": "object"
+        },
+        "domain": {
+          "type": "string"
+        },
+        "industry": {
+          "type": "string"
+        },
+        "monthlyPostings": {
+          "description": "Wider job-count series derived from currently-live jobs (older months under-count expired listings)",
+          "items": {
+            "additionalProperties": true,
+            "properties": {
+              "count": {
+                "description": "Job postings observed that month",
+                "type": "number"
+              },
+              "month": {
+                "description": "YYYY-MM",
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "note": {
+          "description": "Present when fewer snapshot months exist than requested",
+          "type": "string"
+        },
+        "snapshots": {
+          "description": "Detailed monthly snapshots, oldest first",
+          "items": {
+            "additionalProperties": true,
+            "description": "One monthly company snapshot (snapshots began March 2026); compare_companies returns a slimmer subset of these fields",
+            "properties": {
+              "engineeringJobs": {
+                "type": "number"
+              },
+              "familyDistribution": {
+                "description": "get_company_history only",
+                "items": {
+                  "additionalProperties": true,
+                  "properties": {},
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "hiringTrend": {
+                "description": "'up' | 'down' | 'stable'",
+                "type": "string"
+              },
+              "jobsWithCompensation": {
+                "description": "get_company_history only",
+                "type": "number"
+              },
+              "medianSalary": {
+                "description": "Annual USD",
+                "nullable": true,
+                "type": "number"
+              },
+              "month": {
+                "description": "YYYY-MM",
+                "type": "string"
+              },
+              "seniorityDistribution": {
+                "description": "get_company_history only",
+                "items": {
+                  "additionalProperties": true,
+                  "properties": {},
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "topSkills": {
+                "description": "Top 10 skills that month (get_company_history only)",
+                "items": {
+                  "additionalProperties": true,
+                  "properties": {},
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "totalJobs": {
+                "type": "number"
+              },
+              "trendPct": {
+                "description": "Trend magnitude, % change",
+                "type": "number"
+              }
+            },
+            "type": "object"
+          },
+          "type": "array"
+        }
+      },
+      "type": "object"
+    },
+    "meta": {
+      "additionalProperties": true,
+      "description": "Request/response metadata (pagination cursors, snapshot timestamps, applied filters)",
+      "properties": {},
+      "type": "object"
+    }
+  },
+  "required": [
+    "data"
+  ],
+  "type": "object"
+}

First observedv0.1.6Jul 11, 2026

TDQS

A4.6/5.0

Behavior4/5

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

Annotations already indicate readOnlyHint=true, and the description adds context about being 'Analyst tier' and notes that detailed snapshots began March 2026, capping available history. No contradictions. Description adds value beyond 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: first packs the return values, second gives usage and exclusions. No unnecessary words. Highly efficient.

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?

Given the tool's complexity (time-series with many fields), the description covers key return elements and the main limitation. Output schema exists but not shown; description compensates. Missing edge case handling or error scenarios, but still very complete.

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 100%, baseline 3. The description adds context about months default and max, and the historical depth limitation starting March 2026. This extra information helps the agent understand parameter constraints beyond schema.

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?

The description clearly states the tool's purpose: 'Time-series of a company's hiring profile.' It lists the specific data returned (monthly snapshots with metrics like totalJobs, engineeringJobs, etc.) and explicitly differentiates from siblings get_company_profile and compare_companies.

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?

Provides explicit usage examples: 'Use for "how has Anthropic's hiring changed since January?" or "is Stripe growing or shrinking?"' and clearly states when not to use: 'Not for a current-state snapshot (get_company_profile) or side-by-side comparison (compare_companies).'

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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