MCP Server
toolforte
io.github.Toinedotcom/toolforte
What this MCP does
Provides validation, calculation, conversion, text-processing, document, and workflow tools accessible through search and execution.
Capabilities
Tools
14
tools
calculate_vat
VAT Calculator
Add VAT to a net amount or extract VAT from a gross amount at any rate (e.g. 21 for Dutch BTW). Returns exact net, VAT, and gross amounts rounded to cents.
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['amount', 'rate', 'mode'], 'properties': {'mode': {'enum': ['add', 'extract'], 'type': 'string', 'description': 'add = amount is net, add VAT on top; extract = amount is gross, split out VAT'}, 'rate': {'type': 'number', 'maximum': 100, 'minimum': 0, 'description': 'VAT rate in percent'}, 'amount': {'type': 'number', 'minimum': 0, 'description': 'The amount'}}}
Output schema
{'type': 'object', 'properties': {'net': {'type': 'number'}, 'vat': {'type': 'number'}, 'rate': {'type': 'number'}, 'gross': {'type': 'number'}, 'result': {'description': 'The result, when it is not an object'}}, 'additionalProperties': {}}
csv_to_json
CSV to JSON
Parse CSV data into JSON with delimiter auto-detection and quoted-field handling.
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['csv'], 'properties': {'csv': {'type': 'string', 'maxLength': 200000, 'description': 'The CSV text; the delimiter is detected automatically'}, 'firstRowHeaders': {'type': 'boolean', 'default': True, 'description': 'Treat the first row as column names and return objects (default true)'}}}
Output schema
{'type': 'object', 'properties': {'json': {'type': 'array', 'items': {}}, 'result': {'description': 'The result, when it is not an object'}, 'delimiter': {'type': 'string'}, 'row_count': {'type': 'number'}}, 'additionalProperties': {}}
describe_tool
Describe a ToolForte tool
The full definition of one ToolForte tool by name: description, argument schema (JSON Schema), output schema, annotations, cost and an example call. Use it after search_tools when the argument summary is not enough. Free.
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['name'], 'properties': {'name': {'type': 'string', 'maxLength': 80, 'description': 'The tool name, for example validate_iban'}}}
Output schema
{'type': 'object', 'properties': {'name': {'type': 'string'}, 'title': {'type': 'string', 'description': 'Page title'}, 'listed': {'type': 'boolean'}, 'result': {'description': 'The result, when it is not an object'}, 'credits': {'type': 'number'}, 'example': {'type': 'object', 'properties': {'name': {'type': 'string'}, 'arguments': {'type': 'object', 'properties': {'iban': {'type': 'string'}}, 'additionalProperties': {}}}, 'additionalProperties': {}}, 'annotations': {'type': 'object', 'properties': {'readOnlyHint': {'type': 'boolean'}}, 'additionalProperties': {}}, 'description': {'type': 'string'}, 'inputSchema': {'type': 'object', 'properties': {'type': {'type': 'string'}, 'properties': {'type': 'object', 'properties': {}, 'additionalProperties': {}}}, 'additionalProperties': {}}, 'outputSchema': {'type': 'object', 'properties': {'type': {'type': 'string'}}, 'additionalProperties': {}}}, 'additionalProperties': {}}
dutch_public_holidays
Dutch Public Holidays
Exact Dutch public holidays for a year, including movable feasts (Easter, Ascension, Whitsun) and King's Day rules. Use this instead of computing Dutch holidays yourself.
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['year'], 'properties': {'year': {'type': 'integer', 'maximum': 2200, 'minimum': 1900, 'description': 'Calendar year, 1900 to 2200'}}}
Output schema
{'type': 'object', 'properties': {'year': {'type': 'number'}, 'result': {'description': 'The result, when it is not an object'}, 'holidays': {'type': 'array', 'items': {}}}, 'additionalProperties': {}}
format_json
JSON Formatter
Validate and pretty-print JSON with a real parser. Returns formatted JSON or the exact parse error.
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['json'], 'properties': {'json': {'type': 'string', 'maxLength': 200000, 'description': 'The JSON text to validate and format'}, 'indent': {'type': 'integer', 'default': 2, 'maximum': 8, 'minimum': 0, 'description': 'Spaces per indentation level, 0 to 8 (default 2)'}}}
Output schema
{'type': 'object', 'properties': {'valid': {'type': 'boolean', 'description': 'Whether the input passed every check'}, 'output': {'type': 'string', 'description': 'The final output of the workflow'}, 'result': {'description': 'The result, when it is not an object'}}, 'additionalProperties': {}}
run_tool
Run any ToolForte tool by name
Run any ToolForte tool by name with its arguments, whether or not it is listed in this session. The result, the cost and the metering are exactly what the tool gives when called directly; run_tool itself is free. Find names with search_tools and schemas with describe_tool.
Open world
Input schema
{'type': 'object', 'required': ['name'], 'properties': {'name': {'type': 'string', 'maxLength': 80, 'description': 'The tool name, for example calculate_vat'}, 'arguments': {'type': 'object', 'default': {}, 'description': "The tool's arguments, as describe_tool documents them", 'propertyNames': {'type': 'string'}, 'additionalProperties': {}}}}
Output schema
{'type': 'object', 'properties': {'result': {'description': 'The result, when it is not an object'}}, 'additionalProperties': {}}
search_tools
Find a ToolForte tool
Find ToolForte tools by what you want done, for example "iban", "vat", "pdf merge", "working days", "csv to json", "screenshot". ToolForte has over a hundred exact tools (validation, conversion, Dutch tax and dates, test data, files, AI); a session lists a small core of them and this is how you reach the rest. Returns the best matches with their arguments and cost. Then call the tool by name, or through run_tool. Free.
Read only
Idempotent
Input schema
{'type': 'object', 'properties': {'limit': {'type': 'integer', 'default': 8, 'maximum': 50, 'minimum': 1, 'description': 'How many matches to return, 1 to 50 (default 8)'}, 'query': {'type': 'string', 'default': '', 'maxLength': 200, 'description': 'Words describing the job. Empty lists every tool the server has.'}}}
Output schema
{'type': 'object', 'properties': {'note': {'type': 'string'}, 'count': {'type': 'number', 'description': 'Number of items'}, 'query': {'type': 'string'}, 'tools': {'type': 'array', 'items': {}}, 'total': {'type': 'number'}, 'result': {'description': 'The result, when it is not an object'}}, 'additionalProperties': {}}
test_regex
Regex Tester
Run a JavaScript regular expression against a test string using a real regex engine. Returns all matches with capture groups and indices.
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['pattern', 'text'], 'properties': {'text': {'type': 'string', 'maxLength': 20000, 'description': 'The text to run the expression against'}, 'flags': {'type': 'string', 'default': 'g', 'maxLength': 8, 'description': 'Regex flags such as g, i, m, s, u (default g)'}, 'pattern': {'type': 'string', 'maxLength': 1000, 'description': 'JavaScript regular expression source, without the slashes'}}}
Output schema
{'type': 'object', 'properties': {'count': {'type': 'number', 'description': 'Number of items'}, 'result': {'description': 'The result, when it is not an object'}, 'matches': {'type': 'array', 'items': {}}}, 'additionalProperties': {}}
text_diff
Text Diff
Compute an exact line-based diff between two texts with add/remove/unchanged stats.
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['original', 'modified'], 'properties': {'modified': {'type': 'string', 'maxLength': 100000, 'description': 'The text after the change'}, 'original': {'type': 'string', 'maxLength': 100000, 'description': 'The text before the change'}}}
Output schema
{'type': 'object', 'properties': {'lines': {'type': 'array', 'items': {}}, 'stats': {'type': 'object', 'properties': {'added': {'type': 'number'}, 'removed': {'type': 'number'}, 'unchanged': {'type': 'number'}}, 'additionalProperties': {}}, 'result': {'description': 'The result, when it is not an object'}}, 'additionalProperties': {}}
validate_iban
IBAN Validator
Check whether an IBAN is well formed: the mod-97 checksum, the country code, the length that country's IBAN must have, and whether every position holds the kind of character that country allows there (mod-97 turns letters into numbers, so on its own it cannot see a capital O typed in place of a zero). Returns validity, country, and where known the bank identifier printed inside the IBAN. This is a format check, not a bank check: a passing IBAN can still name a bank code that never existed or has since merged away, and says nothing about whether the account exists or can receive a payment. For twelve countries it also verifies the national check digit that the bank computes over the bank code and account number (BE, FR, MC, ES, IT, SM, PT, SI, PL, TN, EE, HU); nationalCheck 'failed' there means the number is very probably invented, since that digit cannot be back-computed the way the mod-97 pair can. Absent nationalCheck means not checked, never approved. For Dutch IBANs it also names the institution behind the four-letter bank code, including codes that no longer issue accounts; an unrecognised code does not make the IBAN invalid. A territory that borrows another country's IBAN (Reunion, Guernsey, Aland and the like) is reported with the prefix it actually uses, since no IBAN starts with RE or GG. Never guess whether an IBAN is well formed: use this tool. Do not present a pass as confirmation that money can be sent.
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['iban'], 'properties': {'iban': {'type': 'string', 'maxLength': 64, 'description': 'The IBAN to validate'}}}
Output schema
{'type': 'object', 'properties': {'iban': {'type': 'string'}, 'valid': {'type': 'boolean', 'description': 'Whether the input passed every check'}, 'result': {'description': 'The result, when it is not an object'}, 'country': {'type': 'string'}, 'bankCode': {'type': 'string'}, 'checkDigits': {'type': 'string'}, 'countryName': {'type': 'string'}, 'institution': {'type': 'object', 'properties': {'kind': {'type': 'string'}, 'name': {'type': 'string'}}, 'additionalProperties': {}}, 'accountNumber': {'type': 'string'}}, 'additionalProperties': {}}
workflow_list
List saved workflows
List the workflows saved to the ToolForte account this API key belongs to. A workflow runs several ToolForte tools in order, passing each one the output of an earlier step, so it does a whole job in one call instead of you orchestrating the steps yourself. Returns each workflow's id, the inputs it expects, the steps it runs and what a run costs. Call this first: workflow_run needs an id from here. Requires an API key, because a workflow belongs to an account. Get a free key at https://toolforte.com/developers and send it on the MCP connection as the header Authorization: Bearer tf_...
Read only
Idempotent
Input schema
{'type': 'object', 'properties': {'limit': {'type': 'integer', 'default': 50, 'maximum': 200, 'minimum': 1, 'description': 'How many to return, newest first.'}}}
Output schema
{'type': 'object', 'properties': {'count': {'type': 'number', 'description': 'Number of items'}, 'result': {'description': 'The result, when it is not an object'}, 'workflows': {'type': 'array', 'items': {}, 'description': 'The workflows on the account'}}, 'additionalProperties': {}}
workflow_propose
Propose a workflow for a goal
Describe a job in plain words and get back a workflow built only from tools this server really has: a name, the inputs it needs, and the steps in order, each with one sentence on why it is there. The proposal is honest about gaps: partial is true and missing names what could not be done, and when nothing here fits the answer says so instead of inventing a step. Send save: true to keep it on the account, after which workflow_run can run it by the returned id. Costs 10 credits, the price of one AI generation, charged once per proposal. Requires an API key linked to a ToolForte account. Get a free key at https://toolforte.com/developers and send it on the MCP connection as the header Authorization: Bearer tf_...
Input schema
{'type': 'object', 'required': ['goal'], 'properties': {'goal': {'type': 'string', 'maxLength': 1000, 'minLength': 8, 'description': 'The job to be done, in a sentence or two, for example: take a CSV of invoices, sum the amounts per customer and write the totals to a spreadsheet.'}, 'save': {'type': 'boolean', 'default': False, 'description': 'Save the proposed workflow to the account so workflow_run can run it. Default false: the proposal is returned for you to read first.'}}}
Output schema
{'type': 'object', 'properties': {'saved': {'type': 'object', 'properties': {'name': {'type': 'string'}, 'workflowId': {'type': 'string'}}, 'description': "The saved workflow's id and name, when save was true", 'additionalProperties': {}}, 'steps': {'type': 'array', 'items': {}, 'description': 'What each step produced'}, 'result': {'description': 'The result, when it is not an object'}, 'missing': {'type': 'array', 'items': {}, 'description': 'What could not be done, named'}, 'partial': {'type': 'boolean', 'description': 'Whether the workflow only does part of what was asked'}, 'definition': {'type': 'object', 'properties': {}, 'description': 'The proposed workflow: name, declared inputs and steps', 'additionalProperties': {}}, 'explanation': {'type': 'string', 'description': 'Plain words on what the workflow does and why each step is there'}, 'creditsCharged': {'type': 'number', 'description': 'Credits spent by this call'}}, 'additionalProperties': {}}
workflow_run
Run a saved workflow
Run one saved workflow by id and return what every step produced. Get the id and the input keys from workflow_list. Each step costs the credits its own tool costs, normally 1 per step, and the credit for this call counts as the first step's rather than being charged on top. Steps run in order and stop at the first failure; the result says which step stopped it and what was spent up to that point. Check the "substitutions" field when it is present: it lists values a step supplied that the tool replaced with its own, which means the run succeeded on a value you did not send. Requires an API key, because a workflow belongs to an account. Get a free key at https://toolforte.com/developers and send it on the MCP connection as the header Authorization: Bearer tf_...
Open world
Input schema
{'type': 'object', 'required': ['workflowId'], 'properties': {'inputs': {'type': 'object', 'description': "Values for the workflow's declared inputs, keyed by the input key that workflow_list reports. Omit for a workflow that declares none.", 'propertyNames': {'type': 'string'}, 'additionalProperties': {}}, 'workflowId': {'type': 'string', 'maxLength': 100, 'description': 'The id of a workflow from workflow_list.'}}}
Output schema
{'type': 'object', 'properties': {'ok': {'type': 'boolean', 'description': 'Whether the run completed'}, 'name': {'type': 'string'}, 'runId': {'type': 'string'}, 'steps': {'type': 'array', 'items': {}, 'description': 'What each step produced'}, 'output': {'type': 'object', 'properties': {}, 'description': 'The final output of the workflow', 'additionalProperties': {}}, 'result': {'description': 'The result, when it is not an object'}, 'stepsRun': {'type': 'number'}, 'durationMs': {'type': 'number'}, 'workflowId': {'type': 'string'}, 'stepsDefined': {'type': 'number'}, 'creditsCharged': {'type': 'number', 'description': 'Credits spent by this call'}}, 'additionalProperties': {}}
working_days_between
Working Days Calculator
Count working days (Mon-Fri) between two dates inclusive, optionally excluding Dutch public holidays. Exact date math for SLA, payroll, and planning questions.
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['start', 'end'], 'properties': {'end': {'type': 'string', 'pattern': '^\\d{4}-\\d{2}-\\d{2}$', 'description': 'YYYY-MM-DD'}, 'start': {'type': 'string', 'pattern': '^\\d{4}-\\d{2}-\\d{2}$', 'description': 'YYYY-MM-DD'}, 'excludeDutchHolidays': {'type': 'boolean', 'default': True, 'description': 'Skip Dutch public holidays that fall on a weekday (default true)'}}}
Output schema
{'type': 'object', 'properties': {'end': {'type': 'string'}, 'start': {'type': 'string'}, 'result': {'description': 'The result, when it is not an object'}, 'totalDays': {'type': 'number'}, 'weekendDays': {'type': 'number'}, 'workingDays': {'type': 'number'}, 'holidaysExcluded': {'type': 'array', 'items': {}}}, 'additionalProperties': {}}
History
Recent tool changes
Added
run_tool
Sept. 17, 2026, 12:52 p.m.
Added
describe_tool
Sept. 17, 2026, 12:52 p.m.
Added
search_tools
Sept. 17, 2026, 12:52 p.m.
Added
workflow_run
Sept. 17, 2026, 12:52 p.m.
Added
workflow_propose
Sept. 17, 2026, 12:52 p.m.
Added
workflow_list
Sept. 17, 2026, 12:52 p.m.
Added
working_days_between
Sept. 17, 2026, 12:52 p.m.
Added
dutch_public_holidays
Sept. 17, 2026, 12:52 p.m.
Added
calculate_vat
Sept. 17, 2026, 12:52 p.m.
Added
validate_iban
Sept. 17, 2026, 12:52 p.m.
Added
test_regex
Sept. 17, 2026, 12:52 p.m.
Added
csv_to_json
Sept. 17, 2026, 12:52 p.m.
Added
format_json
Sept. 17, 2026, 12:52 p.m.
Added
text_diff
Sept. 17, 2026, 12:52 p.m.
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