MCP Server
Penniless Data Utilities
io.github.danielarif26/penniless-data-utilities
What this MCP does
Provides small utilities for cron scheduling, DNS and WHOIS, email validation, GitHub repository metadata, JSON/YAML conversion, text extraction, and diffs.
Capabilities
Tools
9
tools
cron_next_run
Penniless Cron Next Run
Computes the next UTC fire time for a 5-field cron expression (supports steps, ranges, lists, and month/weekday names). Body {expr, after?} -> {ok, next, epochMs}. Costs $0.001 USDC on Base per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['expr'], 'properties': {'expr': {'type': 'string', 'description': '5-field cron expression'}, 'after': {'type': 'string', 'description': 'ISO timestamp to search after (default now)'}}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ok'], 'properties': {'ok': {'type': 'boolean'}}, 'additionalProperties': {}}
dns_lookup
Penniless DNS Lookup
JSON DNS-over-HTTPS lookup for A, AAAA, CNAME, MX, TXT, NS, SOA, PTR, SRV, CAA. Body {domain, type?} -> {ok, domain, type, status, answers[]}. Costs $0.001 USDC on Base per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'type': {'enum': ['A', 'AAAA', 'CNAME', 'MX', 'TXT', 'NS', 'SOA', 'PTR', 'SRV', 'CAA'], 'type': 'string', 'description': 'Record type (default A)'}, 'domain': {'type': 'string', 'description': 'Hostname to resolve'}}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ok'], 'properties': {'ok': {'type': 'boolean'}}, 'additionalProperties': {}}
domain_whois
Penniless WHOIS Lookup
Structured WHOIS via RDAP for any domain: registrar, IANA id, statuses, expiry/registration dates, nameservers, DNSSEC. Body {domain} -> {ok, found, domain, registrar, status[], events{}, nameservers[], dnssec}. Costs $0.001 USDC on Base per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'domain': {'type': 'string', 'description': 'Domain name, no scheme'}}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ok'], 'properties': {'ok': {'type': 'boolean'}}, 'additionalProperties': {}}
email_validate
Penniless Email Validate
Email deliverability check: RFC-style syntax plus live MX probe of the domain. Body {email} -> {ok, valid, formatValid, domainHasMx, mx[]}. Costs $0.001 USDC on Base per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['email'], 'properties': {'email': {'type': 'string', 'description': 'Email address'}}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ok'], 'properties': {'ok': {'type': 'boolean'}}, 'additionalProperties': {}}
github_repo_stats
Penniless GitHub Repo Stats
Popularity and metadata for any public GitHub repo: stars, forks, open issues, watchers, language, license, topics, last push. Body {repo} -> {ok, found, stars, forks, openIssues, language, license, pushedAt}. Costs $0.001 USDC on Base per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['repo'], 'properties': {'repo': {'type': 'string', 'description': 'owner/name'}}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ok'], 'properties': {'ok': {'type': 'boolean'}}, 'additionalProperties': {}}
repair_json
Penniless JSON Repair
Repairs malformed LLM JSON: strips Markdown fences and prose wrappers, fixes trailing commas, converts Python literals (True/False/None) and single/unquoted keys, removes comments, recovers balanced JSON from truncated output. Body {input} -> {ok, repaired, applied}. Costs $0.001 USDC on Base per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['input'], 'properties': {'input': {'type': 'string', 'description': 'Malformed JSON text'}}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ok'], 'properties': {'ok': {'type': 'boolean'}}, 'additionalProperties': {}}
text_diff
Penniless Text Diff
Produces a unified diff plus added/removed counts between two texts (LCS line diff, configurable context lines). Body {old, new, context?} -> {ok, identical, added, removed, hunks, unified}. Costs $0.001 USDC on Base per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['old', 'new'], 'properties': {'new': {'type': 'string', 'description': 'Changed text'}, 'old': {'type': 'string', 'description': 'Original text'}, 'context': {'type': 'number', 'description': 'Context lines per hunk (default 3)'}}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ok'], 'properties': {'ok': {'type': 'boolean'}}, 'additionalProperties': {}}
text_extract
Penniless Text Extract
Extracts clean text, title, headings, links, URLs, and emails from HTML or plain text. Body {input, numbers?, codeBlocks?} -> {ok, source, title, headings, links, urls, emails, text}. Costs $0.001 USDC on Base per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['input'], 'properties': {'input': {'type': 'string', 'description': 'HTML or plain text'}, 'numbers': {'type': 'boolean', 'description': 'Keep numeric strings in text output'}, 'codeBlocks': {'type': 'boolean', 'description': 'Keep pre/code blocks'}}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ok'], 'properties': {'ok': {'type': 'boolean'}}, 'additionalProperties': {}}
yaml_to_json
Penniless YAML to JSON
Converts a YAML subset (block maps, sequences, nested indentation, scalars, comments) into JSON with no runtime dependency. Body {input} -> {ok, value, warnings}. Costs $0.001 USDC on Base per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['input'], 'properties': {'input': {'type': 'string', 'description': 'YAML document text'}}, 'additionalProperties': False}
Output schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ok'], 'properties': {'ok': {'type': 'boolean'}}, 'additionalProperties': {}}
History
Recent tool changes
Added
email_validate
Sept. 18, 2026, 2:40 a.m.
Added
github_repo_stats
Sept. 18, 2026, 2:40 a.m.
Added
dns_lookup
Sept. 18, 2026, 2:40 a.m.
Added
domain_whois
Sept. 18, 2026, 2:40 a.m.
Added
text_extract
Sept. 18, 2026, 2:40 a.m.
Added
text_diff
Sept. 18, 2026, 2:40 a.m.
Added
cron_next_run
Sept. 18, 2026, 2:40 a.m.
Added
yaml_to_json
Sept. 18, 2026, 2:40 a.m.
Added
repair_json
Sept. 18, 2026, 2:40 a.m.
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