# Fast GST Refund (remote · fastgstrefund.com)

Prepare Indian GST refund records, validate entries and generate Statement 3 and Annexure B JSON.

- Trust score: 69/100 (medium)
- Change this week: −1
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

> **Recent critical change**: Authorization (2026-10-09). See the changelog below before you install this server.

## Components

- remote · `fastgstrefund.com`: 69/100 (this document), [markdown](https://verifymcp.io/servers/com-fastgstrefund-fast-gst-refund/fastgstrefund.md), [page](https://verifymcp.io/servers/com-fastgstrefund-fast-gst-refund/fastgstrefund)

## Channel facts

- Endpoint: `https://fastgstrefund.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.3.1`

## 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**: 60/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (generate_statement3).
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 44/100
  - 0% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1614 tokens (~134/item across 12 items; 11 tools + 1 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 86/100
  - Stability check failed: schema churn in the 30 days we've observed: 0 tool removals, 2 breaking changes, 0 auth/transport breaks, 4 additions.
- **Tool Coverage**: 84/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 44% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 75/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - 0 of 3 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "get_refund_checklist" implies "refund" and declares readOnlyHint instead, contradicting what its own name says it does.
  - An AI judge read all 13 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Fast GST Refund MCP server?

Fast GST Refund is a hosted endpoint at https://fastgstrefund.com/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-fastgstrefund-fast-gst-refund 'https://fastgstrefund.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-fastgstrefund-fast-gst-refund": {
      "url": "https://fastgstrefund.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-fastgstrefund-fast-gst-refund": {
      "type": "http",
      "url": "https://fastgstrefund.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-fastgstrefund-fast-gst-refund]
url = "https://fastgstrefund.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-fastgstrefund-fast-gst-refund": {
      "type": "remote",
      "url": "https://fastgstrefund.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-fastgstrefund-fast-gst-refund --url 'https://fastgstrefund.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-fastgstrefund-fast-gst-refund:
    url: "https://fastgstrefund.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-fastgstrefund-fast-gst-refund": {
      "Transport": "http",
      "Url": "https://fastgstrefund.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-fastgstrefund-fast-gst-refund -t streamable-http -u 'https://fastgstrefund.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-fastgstrefund-fast-gst-refund": {
      "type": "http",
      "url": "https://fastgstrefund.com/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.

### 2026-11-04 (score 69, −2)

- [security regression] Stability: pass → fail

### 2026-11-01 (score 71, 0)

- [security] Stability: 0.97 → pass

### 2026-10-31 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-27 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-25 (score 68, +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.

### 2026-10-22 (score 67, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-20 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (11)

### `get_refund_checklist` (~69 tokens)

Get a refund preparation checklist

Returns the records to gather, the checks to make, the next step and the relevant guides for one stage of a service-export GST refund claim and one preparation topic. Use it when someone asks what to prepare or check.

Input parameters:

- `need` (string, required)
- `stage` (string, required)

Output parameters:

- `checks` (array)
- `createFiles` (string)
- `guides` (array)
- `need` (string)
- `needLabel` (string)
- `nextStep` (string)
- `records` (array)
- `scope` (string)
- `stage` (string)
- `stageLabel` (string)
- `summary` (string)
- `title` (string)

### `search_refund_guides` (~59 tokens)

Find GST refund guidance

Finds Fast GST Refund's public guides by preparation topic and returns their slugs, titles and descriptions. Takes general keywords; it does not need taxpayer identifiers or document contents.

Input parameters:

- `limit` (integer)
- `query` (string, required)

Output parameters:

- `guides` (array)

### `read_refund_guide` (~47 tokens)

Read a GST refund guide

Returns one public guide as Markdown, with its source links and the date its sources were checked. Takes a slug from search_refund_guides.

Input parameters:

- `slug` (string, required)

Output parameters:

- `checked` (string)
- `createFiles` (string)
- `description` (string)
- `markdown` (string)
- `slug` (string)
- `title` (string)
- `topic` (string)
- `url` (string)

### `explain_upload_error` (~85 tokens)

Explain a Statement 3 or Annexure B issue

Returns the documented checks and correction steps for one known problem with a Statement 3 or Annexure B file. Statement 3 issues: json_generation, receipt_allocation, corrected_retry, return_mismatch. Annexure B issues: duplicate_document, gstr2b_mismatch, reversals, json_generation.

Input parameters:

- `document` (string, required)
- `issue` (string, required)

Output parameters:

- `checks` (array)
- `document` (string)
- `issue` (string)
- `nextStep` (string)
- `sources` (array)
- `sourcesChecked` (string)
- `title` (string)

### `check_receipt_allocation` (~96 tokens)

Check invoice and receipt allocations

Checks how bank receipts are allocated to export invoices: arithmetic, duplicate allocations, missing row references, overallocated receipts and invoice balances. Takes anonymous row numbers and integer INR paise only; names, GSTINs and certificate numbers are not needed. Up to 200 invoices, 200 receipts and 1000 allocations.

Input parameters:

- `allocations` (array, required)
- `invoices` (array, required)
- `receipts` (array, required)

Output parameters:

- `arithmeticValid` (boolean)
- `currency` (string)
- `invoiceBalances` (array)
- `issues` (array)
- `nextStep` (string)
- `receiptBalances` (array)
- `sources` (array)
- `summary` (object)
- `unit` (string)

### `get_statement3_requirements` (~95 tokens)

List the fields of Statement 3 JSON

Returns the fields of the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, and where each value comes from: export invoices and notes, bank BRC/FIRC rows, and shipping details for goods. Takes no input. Use it before validate_statement3 to learn which fields to collect.

Output parameters:

- `accepted` (object)
- `checks` (string)
- `document` (string)
- `fieldRulesBySupplyType` (object)
- `generatorVersion` (string)
- `inputSchema` (object)
- `jsonVersion` (string)
- `limits` (object)
- `notIncluded` (string)
- `references` (array)
- `scope` (string)
- `sha256` (string)
- `sources` (array)
- `utility` (string)
- `utilityVersion` (string)
- `workflow` (array)

### `validate_statement3` (~124 tokens)

Check records for Statement 3 JSON

Checks records for the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01), the file the GST portal otherwise requires from its Excel offline utility. Applies the offline utility's own checks and returns every error and warning at once, with its row and field. Free; needs no sign-in; stores nothing. A file made by the official utility can be passed as data unchanged.

Input parameters:

- `data` (object, required): The document's fields, as its requirements tool lists them, or a JSON file from the official utility unchanged.

Output parameters:

- `claim` (object)
- `document` (string)
- `errors` (array)
- `generatorVersion` (string)
- `inputFormat` (string)
- `jsonVersion` (string)
- `message` (string)
- `nextStep` (string)
- `summary` (object)
- `utilityVersion` (string)
- `valid` (boolean)
- `warnings` (array)

### `generate_statement3` (~227 tokens)

Create Statement 3 JSON

Creates the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, from records that pass validate_statement3. Returns openUrl, a link the user opens in a browser to sign in by email, pay once per GSTIN and refund period, and download; the checked records are stored behind the link for 24 hours. With a connected account that has paid, it returns the file. The tool takes no GST portal password or OTP.

Input parameters:

- `data` (object, required): The document's fields, as its requirements tool lists them, or a JSON file from the official utility unchanged.
- `direct` (boolean): true to have the file returned to this client. It needs the user's Fast GST Refund account to be connected; if it is not, the client is asked to sign in. Leave out unless the user asked for the file…
- `link` (string): The openUrl from the other generate tool's result, so that one link holds both files.

Output parameters:

- `claim` (object)
- `document` (string)
- `documents` (array)
- `errors` (array)
- `expiresAt` (string)
- `file` (object)
- `generatorVersion` (string)
- `inputFormat` (string)
- `jsonVersion` (string)
- `linkNote` (string)
- `linkStatus` (string)
- `message` (string)
- `nextStep` (string)
- `openUrl` (string)
- `status` (string)
- `summary` (object)
- `utilityVersion` (string)
- `valid` (boolean)
- `warnings` (array)

### `get_annexure_b_requirements` (~121 tokens)

List the fields of Annexure B JSON

Returns the fields of the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, and where each value comes from: purchase documents, tax amounts, the GSTR-2B period, reviewed ITC eligibility and the eight GSTR-3B reversal totals, with the fields each supply type leaves empty. Takes no input. Use it before validate_annexure_b to learn which fields to collect.

Output parameters:

- `accepted` (object)
- `checks` (string)
- `document` (string)
- `fieldRulesBySupplyType` (object)
- `generatorVersion` (string)
- `inputSchema` (object)
- `jsonVersion` (string)
- `limits` (object)
- `notIncluded` (string)
- `references` (array)
- `scope` (string)
- `sha256` (string)
- `sources` (array)
- `utility` (string)
- `utilityVersion` (string)
- `workflow` (array)

### `validate_annexure_b` (~156 tokens)

Check records for Annexure B JSON

Checks records for the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01), the file the GST portal otherwise requires from its Excel offline utility. Applies the offline utility's own checks and returns every error and warning at once, with its row and field. Free; needs no sign-in; stores nothing. A file made by the official utility can be passed as data unchanged. ITC eligibility, reversal amounts and GSTR-2B periods come from the taxpayer's reviewed records; the tool does not infer them.

Input parameters:

- `data` (object, required): The document's fields, as its requirements tool lists them, or a JSON file from the official utility unchanged.

Output parameters:

- `claim` (object)
- `document` (string)
- `errors` (array)
- `generatorVersion` (string)
- `inputFormat` (string)
- `jsonVersion` (string)
- `message` (string)
- `nextStep` (string)
- `summary` (object)
- `utilityVersion` (string)
- `valid` (boolean)
- `warnings` (array)

### `generate_annexure_b` (~261 tokens)

Create Annexure B JSON

Creates the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, from records that pass validate_annexure_b. Returns openUrl, a link the user opens in a browser to sign in by email, pay once per GSTIN and refund period, and download; the checked records are stored behind the link for 24 hours. With a connected account that has paid, it returns the file. The tool takes no GST portal password or OTP. ITC eligibility, reversal amounts and GSTR-2B periods come from the taxpayer's reviewed records; the tool does not infer them.

Input parameters:

- `data` (object, required): The document's fields, as its requirements tool lists them, or a JSON file from the official utility unchanged.
- `direct` (boolean): true to have the file returned to this client. It needs the user's Fast GST Refund account to be connected; if it is not, the client is asked to sign in. Leave out unless the user asked for the file…
- `link` (string): The openUrl from the other generate tool's result, so that one link holds both files.

Output parameters:

- `claim` (object)
- `document` (string)
- `documents` (array)
- `errors` (array)
- `expiresAt` (string)
- `file` (object)
- `generatorVersion` (string)
- `inputFormat` (string)
- `jsonVersion` (string)
- `linkNote` (string)
- `linkStatus` (string)
- `message` (string)
- `nextStep` (string)
- `openUrl` (string)
- `status` (string)
- `summary` (object)
- `utilityVersion` (string)
- `valid` (boolean)
- `warnings` (array)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-fastgstrefund-fast-gst-refund/fastgstrefund#diagnostics

## Score history

- 2026-11-05: 69
- 2026-11-04: 69
- 2026-11-03: 71
- 2026-11-02: 71
- 2026-11-01: 71
- 2026-10-31: 71
- 2026-10-30: 70
- 2026-10-29: 70
- 2026-10-28: 69
- 2026-10-27: 69
- 2026-10-26: 68
- 2026-10-25: 68
- 2026-10-24: 67
- 2026-10-23: 67
- 2026-10-22: 67
- 2026-10-21: 66
- 2026-10-20: 66
- 2026-10-19: 65
- 2026-10-18: 65
- 2026-10-17: 64
- 2026-10-16: 64
- 2026-10-15: 63
- 2026-10-14: 63
- 2026-10-13: 62
- 2026-10-12: 62
- 2026-10-10: 61
- 2026-10-09: 60
- 2026-10-06: 64
- 2026-10-04: 63
- 2026-10-03: 63

## Common questions

### What is the Fast GST Refund MCP server?

Fast GST Refund is an MCP server listed in the public MCP registry as com.fastgstrefund/fast-gst-refund. Prepare Indian GST refund records, validate entries and generate Statement 3 and Annexure B JSON. This page covers its hosted endpoint (https://fastgstrefund.com/mcp).

### Is the Fast GST Refund MCP server safe to use?

Fast GST Refund scores 69 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 Fast GST Refund MCP server expose?

Fast GST Refund exposes 11 tools: get_refund_checklist, search_refund_guides, read_refund_guide, explain_upload_error, check_receipt_allocation, and 6 more. Their descriptions and schemas cost roughly 1,340 tokens of context every time the server is loaded.

### Does the Fast GST Refund MCP server require authentication?

No. We connected to Fast GST Refund without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Fast GST Refund MCP server still maintained?

Fast GST Refund 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.

## Links

- Remote endpoint: https://fastgstrefund.com/mcp
- Repository: https://github.com/syllogismos/fast-gst-refund-mcp
- Website: https://fastgstrefund.com/for-agents/
- Changelog RSS feed: https://verifymcp.io/servers/com-fastgstrefund-fast-gst-refund/fastgstrefund.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-fastgstrefund-fast-gst-refund/fastgstrefund.json
- HTML version of this page: https://verifymcp.io/servers/com-fastgstrefund-fast-gst-refund/fastgstrefund