aid: monsitools
name: MonsiTools
image: https://monsitools.com/og/default.png
description: 'MonsiTools is a calculator and workflow builder: people build calculators
  by typing a formula in plain words and chain them into workflows. It ships 1262
  ready-made browser calculators and data tools for business, finance, SaaS metrics,
  ecommerce and marketing, plus a JSON Calculation API (premium, 60 requests per minute,
  Bearer mt_live_ keys) and a remote MCP server at monsitools.com/mcp.'
url: https://raw.githubusercontent.com/api-evangelist/monsitools/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-09 (local-v5; was harvest)
specificationVersion: '0.20'
created: '2026-10-09'
modified: '2026-10-09'
tags:
- Company
- Calculators
- Finance
- Workflows
- MCP
- Data Tools
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: RateLimits
  url: rate-limits/monsitools-rate-limits.yml
- type: ToolCrosswalk
  url: mcp/monsitools-tool-crosswalk.yml
- type: AgenticAccess
  url: agentic-access/monsitools-agentic-access.yml
- type: Spectral
  url: rules/monsitools-rules.yml
- type: JSONLD
  url: json-ld/monsitools-context.jsonld
- type: Vocabulary
  url: vocabulary/monsitools-vocabulary.yml
- type: DataModel
  url: data-model/monsitools-data-model.yml
- type: ErrorCatalog
  url: errors/monsitools-problem-types.yml
- type: Conformance
  url: conformance/monsitools-conformance.yml
- type: LLMsTxt
  url: llms/monsitools-llms.txt
- type: Hosts
  url: hosts/monsitools-hosts.yml
- type: Vendors
  url: vendors/monsitools-vendors.yml
- type: Authentication
  url: authentication/monsitools-authentication.yml
- type: DomainSecurity
  url: security/monsitools-domain-security.yml
- type: Website
  url: https://monsitools.com
- type: Documentation
  url: https://monsitools.com/developers
- type: DeveloperPortal
  url: https://monsitools.com/developers
- type: ChangeLog
  url: https://monsitools.com/whats-new
- type: Login
  url: https://monsitools.com/login
- type: SignUp
  url: https://monsitools.com/login
- type: Pricing
  url: https://monsitools.com/pricing
- type: PrivacyPolicy
  url: https://monsitools.com/privacy
- type: TermsOfService
  url: https://monsitools.com/terms
- type: GettingStarted
  url: https://monsitools.com/guides
apis:
- aid: monsitools:mcp
  name: MonsiTools MCP Server
  description: Remote MCP server exposing search_calculators, describe_calculator and calculate.
  humanURL: https://monsitools.com/developers
  baseURL: https://monsitools.com/mcp
  tags:
  - MCP
  properties:
  - type: MCPServer
    url: mcp/monsitools-mcp.yml
- aid: monsitools:monsitools-api-tools-json-api
  name: MonsiTools Api Tools.json API
  description: The Api Tools.json API from MonsiTools — 1 operation(s) for api tools.json.
  humanURL: https://monsitools.com/developers
  baseURL: https://monsitools.com/mcp
  tags:
  - Api Tools.json
  properties:
  - type: OpenAPI
    url: openapi/monsitools-api-tools-json-api-openapi.yml
  - type: JSONSchema
    url: json-schema/monsitools-calculate-request-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-api-key-status-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-calculate-result-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-tool-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-api-key-created-schema.json
- aid: monsitools:monsitools-calculate-api
  name: MonsiTools Calculate API
  description: The Calculate API from MonsiTools — 1 operation(s) for calculate.
  humanURL: https://monsitools.com/developers
  baseURL: https://monsitools.com/mcp
  tags:
  - Calculate
  properties:
  - type: OpenAPI
    url: openapi/monsitools-calculate-api-openapi.yml
  - type: JSONSchema
    url: json-schema/monsitools-calculate-request-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-api-key-status-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-calculate-result-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-tool-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-api-key-created-schema.json
- aid: monsitools:monsitools-keys-api
  name: MonsiTools Keys API
  description: The Keys API from MonsiTools — 1 operation(s) for keys.
  humanURL: https://monsitools.com/developers
  baseURL: https://monsitools.com/mcp
  tags:
  - Keys
  properties:
  - type: OpenAPI
    url: openapi/monsitools-keys-api-openapi.yml
  - type: JSONSchema
    url: json-schema/monsitools-calculate-request-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-api-key-status-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-calculate-result-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-tool-schema.json
  - type: JSONSchema
    url: json-schema/monsitools-api-key-created-schema.json
x-submission-notes: Calculator JSON API
x-submission-probe: OpenAPI 3.1 5 ops; invented path 404
x-submitted-by: monsibdtheadventurer@gmail.com (apis.io/add, 2026-10-09)
x-enrichment:
  date: '2026-10-09'
  status: enriched
  artifacts_added: 14
  pass: local-v5