# Heffl Free Tools (remote · api.heffl.com)

Free email verification, business calculators, UAE estimates and drafts. No API key.

- Trust score: 84/100 (high trust)
- Change this week: +2
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `api.heffl.com`: 84/100 (this document), [markdown](https://verifymcp.io/servers/com-heffl-free-tools/api-public-tools-mcp.md), [page](https://verifymcp.io/servers/com-heffl-free-tools/api-public-tools-mcp)

## Channel facts

- Endpoint: `https://api.heffl.com/api/public-tools/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 67/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 1402 tokens (~93/item across 15 items; 15 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 15 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 16 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Heffl Free Tools MCP server?

Heffl Free Tools is a hosted endpoint at https://api.heffl.com/api/public-tools/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-heffl-free-tools 'https://api.heffl.com/api/public-tools/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-heffl-free-tools": {
      "url": "https://api.heffl.com/api/public-tools/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-heffl-free-tools": {
      "type": "http",
      "url": "https://api.heffl.com/api/public-tools/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-heffl-free-tools]
url = "https://api.heffl.com/api/public-tools/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-heffl-free-tools": {
      "type": "remote",
      "url": "https://api.heffl.com/api/public-tools/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-heffl-free-tools --url 'https://api.heffl.com/api/public-tools/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-heffl-free-tools:
    url: "https://api.heffl.com/api/public-tools/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-heffl-free-tools": {
      "Transport": "http",
      "Url": "https://api.heffl.com/api/public-tools/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-heffl-free-tools -t streamable-http -u 'https://api.heffl.com/api/public-tools/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-heffl-free-tools": {
      "type": "http",
      "url": "https://api.heffl.com/api/public-tools/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 84, +1)

- [security] Stability: 0.97 → pass

### 2026-11-04 (score 83, −1)

- [functional] Stability: pass → 0.97

### 2026-11-02 (score 84, +1)

- [security] Stability: 0.97 → pass

### 2026-10-31 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-26 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-22 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (15)

### `email_verify` (~79 tokens)

Verify an email address

Check one email's syntax, mail routing, disposable/free-provider/role flags, and SMTP recipient acceptance. Sends no email. DNS alone does not verify a mailbox. unknown means inconclusive or mailbox not checked; likely_deliverable is evidence, not a delivery guarantee. No login or API key required. Rate limited.

Input parameters:

- `email` (string, required)

Output parameters:

- `checkedAt` (string)
- `checks` (object)
- `email` (string)
- `reason` (string)
- `status` (string)
- `suggestion` (string|null)

### `photography_pricing` (~101 tokens)

Photography pricing

Calculate session price, costs, profit and per-photo price. Margin is a percentage of selling price; currency-neutral, no conversion. Free, no authentication required. Rate limited.

Input parameters:

- `editingHours` (number, required)
- `editingRate` (number, required)
- `gearTravelCost` (number, required)
- `hourlyRate` (number, required)
- `hoursOnSite` (number, required)
- `margin` (number, required)
- `numPhotos` (integer, required)

Output parameters:

- `actualMargin` (number)
- `directCost` (number)
- `editingCost` (number)
- `perPhotoPrice` (number)
- `price` (number)
- `profit` (number)
- `shootLaborCost` (number)

### `freelance_rate` (~94 tokens)

Freelance hourly and day rates

Calculate sustainable rates. margin is a percentage buffer added to annual income plus overhead, matching the website. All money must use the same currency. Free, no authentication required. Rate limited.

Input parameters:

- `annualIncome` (number, required)
- `billableHours` (number, required)
- `billableWeeks` (number, required)
- `hoursPerDay` (number, required)
- `margin` (number, required)
- `overhead` (number, required)

Output parameters:

- `annualBillableHours` (number)
- `dayRate` (number)
- `hourlyRate` (number)
- `incomePortion` (number)
- `marginPortion` (number)
- `overheadPortion` (number)
- `totalNeeded` (number)

### `agency_pricing` (~81 tokens)

Agency pricing and profitability

Calculate project price from labor, overhead and risk buffer. margin is percentage of selling price; overhead and riskBuffer are percentage additions. Free, no authentication required. Rate limited.

Input parameters:

- `hourlyCost` (number, required)
- `hours` (number, required)
- `margin` (number, required)
- `overhead` (number, required)
- `riskBuffer` (number, required)

Output parameters:

- `actualMargin` (number)
- `basePrice` (number)
- `bufferedHours` (number)
- `directLabor` (number)
- `effectiveRate` (number)
- `overheadCost` (number)
- `profit` (number)
- `totalCost` (number)

### `business_days` (~53 tokens)

Business days and date offsets

Count weekdays between dates or add/subtract days. UTC dates, Monday–Friday; start included and end excluded unless includeEnd. Offset excludes start. Public holidays are not excluded. Free, no authentication required. Rate limited.

Output parameters:

- `businessDays` (number)
- `calendarDays` (number)
- `endDate` (string)
- `holidaysExcluded` (boolean)
- `mode` (string)
- `startDate` (string)
- `weekendDays` (number)

### `risk_assessment` (~59 tokens)

Project risk assessment

Score user-supplied risks using likelihood × impact (1–5). Low <=6, medium <=14, high >=15. Does not infer likelihood or impact. Free, no authentication required. Rate limited.

Input parameters:

- `risks` (array, required)

Output parameters:

- `risks` (array)

### `coaching_agreement` (~130 tokens)

Coaching agreement template

Generate the website's coaching agreement as plain text. Missing text fields use placeholders. Draft only; legal review may be needed. Free, no authentication required. Rate limited.

Input parameters:

- `businessName` (string)
- `cancellationPolicy` (string)
- `clientName` (string)
- `coachName` (string)
- `coachingType` (string)
- `fee` (string)
- `paymentTerms` (string)
- `programLength` (string)
- `sessionFormat` (string)
- `sessionLength` (integer)
- `startDate` (string)

Output parameters:

- `format` (string)
- `notice` (string)
- `text` (string)

### `retainer_agreement` (~127 tokens)

Retainer agreement template

Generate the website's monthly retainer agreement as plain text. Missing text fields use placeholders. Draft only; legal review may be needed. Free, no authentication required. Rate limited.

Input parameters:

- `clientName` (string)
- `contractTerm` (string)
- `includedScope` (string)
- `monthlyFee` (string)
- `noticePeriod` (string)
- `overageRate` (string)
- `paymentDue` (string)
- `providerName` (string)
- `serviceType` (string)
- `startDate` (string)

Output parameters:

- `format` (string)
- `notice` (string)
- `text` (string)

### `uae_vat` (~57 tokens)

UAE VAT estimate

Estimate standard 5% UAE VAT in AED, inclusive or exclusive. Does not classify exempt or zero-rated supplies. Free, no authentication required. Rate limited.

Input parameters:

- `amount` (number, required)
- `includeVat` (boolean)

Output parameters:

- `net` (number)
- `total` (number)
- `vat` (number)
- `vatRate` (number)

### `uae_corporate_tax` (~72 tokens)

UAE corporate tax estimate

Estimate standard UAE corporate tax on already-adjusted taxable income in AED: 0% up to 375000 and 9% above. Does not determine deductions, free-zone rules, relief or multinational minimum tax. Free, no authentication required. Rate limited.

Input parameters:

- `taxableIncome` (number, required)

Output parameters:

- `tax` (number)
- `taxableAboveThreshold` (number)
- `taxableIncome` (number)
- `zeroRateBand` (number)

### `uae_gratuity` (~99 tokens)

UAE end-of-service gratuity estimate

AED estimate for covered private-sector full-time foreign workers using monthly basic salary, at least one year service, 21 days for first five years then 30; capped at 24 months basic salary. Assumes continuous service without unpaid leave; no deductions or alternative schemes assessed. Free, no authentication required. Rate limited.

Input parameters:

- `basicSalary` (number, required)
- `endDate` (string, required)
- `startDate` (string, required)

Output parameters:

- `currency` (string)
- `eligible` (boolean)
- `gratuity` (number)
- `yearsOfService` (number)

### `uae_real_estate_vat` (~101 tokens)

UAE property VAT estimate

Estimate VAT on ordinary commercial/residential property in AED, not transfer fees. Residential zero-rating requires FIRST supply within three years of completion; other residential supply exempt. No mixed-use or specialist properties. Free, no authentication required. Rate limited.

Input parameters:

- `amount` (number, required)
- `firstSupply` (boolean, required)
- `includeVat` (boolean)
- `propertyType` (string, required)
- `yearsSinceCompletion` (number, required)

Output parameters:

- `net` (number)
- `total` (number)
- `treatment` (string)
- `vat` (number)
- `vatRate` (number)

### `quotation_generate` (~96 tokens)

Quotation document data

Generate quotation JSON and plain-text draft with percentage discounts per item and tax on discounted amounts. Does not save, send, or render PDF; website provides visual export. Currency is a label, no FX conversion. Free, no authentication required. Rate limited.

Input parameters:

- `client` (string, required)
- `currency` (string, required)
- `lineItems` (array, required)
- `quotationNumber` (string, required)
- `sender` (string, required)

Output parameters:

- `currency` (string)
- `lineItems` (array)
- `quotationNumber` (string)
- `subtotal` (number)
- `tax` (number)
- `text` (string)
- `total` (number)

### `sow_generate` (~105 tokens)

AI scope of work draft

Generate a scope-of-work draft using the existing Heffl DeepSeek service. Returns untrusted HTML, not legal advice. Drafts may infer details; verify before use. Provider configuration required server-side. Free, no authentication required. Rate limited.

Input parameters:

- `clientName` (string)
- `deliverables` (array)
- `projectGoals` (string, required)
- `projectTitle` (string, required)
- `serviceCategory` (string)
- `timeline` (string)

Output parameters:

- `sow` (string)

### `whatsapp_generate` (~87 tokens)

AI WhatsApp message draft

Generate a business WhatsApp message draft using Heffl's DeepSeek service. Only drafts text; never sends messages. Provider configuration required server-side. Free, no authentication required. Rate limited.

Input parameters:

- `addEmoji` (boolean)
- `businessBio` (string)
- `businessName` (string)
- `messageTone` (string)
- `useCase` (string, required)

Output parameters:

- `message` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-heffl-free-tools/api-public-tools-mcp#diagnostics

## Score history

- 2026-11-05: 84
- 2026-11-04: 83
- 2026-11-03: 84
- 2026-11-02: 84
- 2026-11-01: 83
- 2026-10-31: 83
- 2026-10-30: 82
- 2026-10-29: 82
- 2026-10-28: 81
- 2026-10-27: 81
- 2026-10-26: 81
- 2026-10-25: 80
- 2026-10-24: 80
- 2026-10-23: 79
- 2026-10-22: 79
- 2026-10-21: 78
- 2026-10-20: 78
- 2026-10-19: 77
- 2026-10-18: 77
- 2026-10-17: 76
- 2026-10-16: 76
- 2026-10-15: 75
- 2026-10-14: 75
- 2026-10-13: 74
- 2026-10-12: 74
- 2026-10-10: 73
- 2026-10-07: 72
- 2026-10-06: 71
- 2026-10-04: 70
- 2026-10-03: 70

## Common questions

### What is the Heffl Free Tools MCP server?

Heffl Free Tools is an MCP server listed in the public MCP registry as com.heffl/free-tools. Free email verification, business calculators, UAE estimates and drafts. No API key. This page covers its hosted endpoint (https://api.heffl.com/api/public-tools/mcp).

### Is the Heffl Free Tools MCP server safe to use?

Heffl Free Tools scores 84 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Heffl Free Tools MCP server expose?

Heffl Free Tools exposes 15 tools: email_verify, photography_pricing, freelance_rate, agency_pricing, business_days, and 10 more. Their descriptions and schemas cost roughly 1,341 tokens of context every time the server is loaded.

### Does the Heffl Free Tools MCP server require authentication?

No. We connected to Heffl Free Tools without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Heffl Free Tools MCP server still maintained?

Heffl Free Tools is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What did VerifyMCP test on the Heffl Free Tools MCP server?

VerifyMCP ran 13 checks on Heffl Free Tools, covering TLS certificate, Authorization, HTTPS, HSTS header and 9 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- Remote endpoint: https://api.heffl.com/api/public-tools/mcp
- Website: https://heffl.com/tools/agents
- Changelog RSS feed: https://verifymcp.io/servers/com-heffl-free-tools/api-public-tools-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-heffl-free-tools/api-public-tools-mcp/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/com-heffl-free-tools/api-public-tools-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-heffl-free-tools/api-public-tools-mcp