Every server speaks MCP Streamable HTTP at https://mcp.moltlinestudio.com/<server>.
The free tier needs no registration, no account, and no credentials — connect and call tools immediately.
Independently audited: MCPize Verified A. Machine-readable discovery via the
API catalog; access details in the
agent access guide.
In Claude Desktop, Claude Code, Cursor, Codex CLI or any client that speaks MCP
Streamable HTTP, add a server with the URL
https://mcp.moltlinestudio.com/timeops. Then ask your agent:
“how many business days between March 3 and April 17, skipping US
holidays?”
It calls business_days and returns an exact answer instead of a
confident guess. Language models are still unreliable at calendar arithmetic, and
this is the cheapest possible fix. The same paste-and-ask loop works on all
fourteen servers below — just swap the slug.
If your client only speaks stdio, there is a zero-dependency open-source bridge: one Python file, MIT licensed, nothing to install.
https://mcp.moltlinestudio.com/catalog
Discovery and licensing for the whole Moltline line: search the 138-bundle catalog, browse the server fleet, and look up any product before you buy or build.
Tools (10): search_catalog, preview_product, get_free_skill, list_kits, upgrade_info, get_full_persona, get_full_skill, get_full_product, get_full_kit, recommend_products.
Free tools: search_catalog, preview_product, get_free_skill, upgrade_info, recommend_products. Premium (All-Access license): list_kits, get_full_persona, get_full_skill, get_full_product, get_full_kit.
https://mcp.moltlinestudio.com/codereview
Code review tooling for human- and AI-written code: structured review passes, checklists, and verification aids that catch what a quick skim misses.
Tools (7): review_diff, ai_code_smell_scan, complexity_report, secret_scan, review_checklist, security_deep_dive, get_reviewer_persona.
Free tools: review_diff, ai_code_smell_scan, complexity_report, secret_scan, review_checklist. Premium (All-Access license): security_deep_dive, get_reviewer_persona.
https://mcp.moltlinestudio.com/timeops
Deterministic time operations for agents: business-day math, meeting overlap, recurrence expansion, deadline planning, and SLA due dates.
Tools (5): business_days, meeting_overlap, recurrence_expand, deadline_planner, sla_due.
Free tools: business_days, meeting_overlap, recurrence_expand. Premium (All-Access license): deadline_planner, sla_due.
https://mcp.moltlinestudio.com/data
Practical data utilities for everyday agent workflows: parsing, transforms, cleanup, and format conversion.
Tools (7): csv_profile, ab_test, correlation, growth_rates, funnel_report, cohort_retention, forecast_trend.
Free tools: csv_profile, ab_test, correlation, growth_rates. Premium (All-Access license): funnel_report, cohort_retention, forecast_trend.
https://mcp.moltlinestudio.com/business
Small-business operations: the back-office workflows an owner actually runs every week, from tracking what is overdue to keeping commitments moving.
Tools (8): list_products, get_free_skill, unit_economics, get_full_product, get_full_skill, loan_payment, cash_runway, target_price.
Free tools: list_products, get_free_skill, unit_economics, loan_payment, cash_runway, target_price. Premium (All-Access license): get_full_product, get_full_skill.
https://mcp.moltlinestudio.com/creator
Content creation for creators and marketing teams: hooks, outlines, captions, and repurposing.
Tools (8): list_products, get_free_skill, analyze_writing, get_full_product, get_full_skill, headline_analyzer, reading_time, social_length_check.
Free tools: list_products, get_free_skill, analyze_writing, headline_analyzer, reading_time, social_length_check. Premium (All-Access license): get_full_product, get_full_skill.
https://mcp.moltlinestudio.com/educator
Teaching and learning aids for educators: lesson planning, quiz and study-material generation, classroom workflows.
Tools (7): list_products, get_free_skill, readability_report, get_full_product, get_full_skill, grade_curve, lesson_timer.
Free tools: list_products, get_free_skill, readability_report, grade_curve, lesson_timer. Premium (All-Access license): get_full_product, get_full_skill.
https://mcp.moltlinestudio.com/govern
Agent governance auditing: policy checks, compliance gates, and review workflows for teams running agents in production.
Tools (8): agent_readiness_scan, audit_mcp_config, scope_check, audit_skill_file, injection_scan, inventory_report, governance_policy, get_auditor_persona.
Free tools: agent_readiness_scan, audit_mcp_config, scope_check, audit_skill_file, injection_scan, inventory_report. Premium (All-Access license): governance_policy, get_auditor_persona.
Start here. Add this server, then ask your agent “score stripe.com for agent readiness”. agent_readiness_scan returns a number out of 21, every failure and the exact fix, on any public domain — free, no account. For scale: the median of a hundred major sites is 8 of 21.
https://mcp.moltlinestudio.com/humanizer
Text humanizing: tone, clarity, and natural rewrites that make AI-generated drafts read like a person wrote them.
Tools (5): ai_tell_scan, voice_fingerprint, burstiness_report, humanize_plan, verify_rewrite.
Free tools: ai_tell_scan, voice_fingerprint, burstiness_report. Premium (All-Access license): humanize_plan, verify_rewrite.
https://mcp.moltlinestudio.com/merchant
Commerce helpers: product copy, listings, and storefront content for sellers.
Tools (6): processor_fees, charge_to_net, invoice_total, discount_stack, proration, installment_plan.
Free tools: processor_fees, charge_to_net, invoice_total. Premium (All-Access license): discount_stack, proration, installment_plan.
https://mcp.moltlinestudio.com/outbound
Sales outreach: sequences, personalization, and reply drafting for outbound motions.
Tools (8): list_products, get_free_skill, audit_copy, get_full_product, get_full_skill, sequence_planner, subject_line_scorer, utm_builder.
Free tools: list_products, get_free_skill, audit_copy, sequence_planner, subject_line_scorer, utm_builder. Premium (All-Access license): get_full_product, get_full_skill.
https://mcp.moltlinestudio.com/personal
Personal productivity: planning, routines, and life admin, run through your agent.
Tools (9): list_products, get_free_skill, budget_split, spaced_repetition_plan, get_full_product, get_full_skill, savings_goal, tip_split, countdown_days.
Free tools: list_products, get_free_skill, budget_split, spaced_repetition_plan, savings_goal, tip_split, countdown_days. Premium (All-Access license): get_full_product, get_full_skill.
https://mcp.moltlinestudio.com/research
Research support: citations, summaries, and source organization for serious research work.
Tools (8): list_products, get_free_skill, format_citation, get_full_product, get_full_skill, stats_describe, sample_size, confidence_interval.
Free tools: list_products, get_free_skill, format_citation, stats_describe, sample_size, confidence_interval. Premium (All-Access license): get_full_product, get_full_skill.
https://mcp.moltlinestudio.com/skillmd-lint
SKILL.md quality tooling: validate, lint, and improve agent skill files before you ship them.
Tools (6): lint_skill, packaging_check, regex_test, json_validate, diff_texts, cron_explain.
Free tier available; premium tools unlock with the Moltline All-Access license.
Thirty-five-plus tools across the fleet are free forever — not free for fourteen days, not free until the pricing page changes. The free tier is the front door and it stays open. One All-Access licence at $19/month unlocks the premium tools on every server, and that single licence funds the whole fleet. The licence is checked server-side on every premium call, carries no account with it, and simply stops unlocking things if you cancel. Card or crypto. And if you are an agent rather than a person, /api will quote you a price you can settle in USDC on Base with no human in the loop.
Fair question — you are pointing your agent at someone else's endpoint. Three answers, all of which you can check without asking us.
Every server passed a seven-dimension audit covering protocol correctness, session handling, origin validation, error hygiene and safety: MCPize Verified A. The badges re-scan on a schedule; they are not screenshots of one good day.
The free tier asks you for nothing. No credentials to steal, no account to compromise. The servers are stateless calculators and analysers — your data is not stored.
An api-catalog, a server card per endpoint, an agent-skills index with sha256 digests, and every agent protocol documented. Scan the domain with whatever tool you trust.
The things people ask before they paste a URL.
No. Any client that speaks MCP Streamable HTTP takes the same URL, so the configuration is identical in Claude Desktop, Claude Code, Cursor and Codex CLI. Clients that only speak stdio use the open-source bridge: python moltline_mcp.py timeops.
The tool says so plainly and points at the licence page. Nothing breaks and nothing silently returns an empty result - the free tools on that server keep working exactly as before.
Fair use. If you are building something that needs real volume, email support@moltlinestudio.com and we will sort it out.
Servers give an agent tools; skills teach an agent workflows. The skills are SKILL.md playbooks that pair with these servers, free on GitHub and catalogued at moltlinestudio.com/skills.html.