# cURL to Fetch

**MCP Tool:** `curl_to_fetch`  
**Tier:** Tier 2 — Differentiated  
**Category:** converters  
**Endpoint:** https://obfus.link/mcp  
**Price:** $0.015 / call  
**Verification:** ✓ TDD verified  

> Convert curl commands to fetch, axios, got, ky, or node-fetch

## Atomic Answer

cURL to Fetch converts curl commands from API docs or terminal history into production fetch, axios, got, ky, or node-fetch code. It extracts secrets to process.env references, generates exponential or linear retry wrappers, and adds inline comments explaining each translated option for unfamiliar libraries.

## Description

Converts curl commands into idiomatic HTTP client code. Extracts secrets to process.env references, generates exponential or linear retry wrappers, and adds annotated inline comments explaining each translated option for unfamiliar libraries.

## Agentic Reasoning

USE THIS WHEN: (1) You have a curl command from API documentation or terminal history and need production-ready fetch code. (2) The curl command contains secrets that must be hoisted to env vars before the code is committed. (3) You need a retry wrapper generated alongside the conversion. DO NOT USE WHEN: you already have working fetch code — the tool adds no value. OVER ALTERNATIVES: prefer this over manual translation (misses auth header nuances, no retry scaffolding) and online curl converters (no env var extraction, no MCP API).

## MCP Description

Converts a curl command into idiomatic HTTP client code in the target library. USE WHEN: you have a curl command and need production-ready code, the command contains secrets that must be extracted to env vars before commit, or you need a retry wrapper generated. INPUT: curl string and target library. OUTPUT: code, imports, warnings, and env var manifest. EDGE CASES: handles -H, -d, --data-raw, -X, -b, basic auth. COST: 1 unit.

## Input Schema

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `curl` | `string` | yes | Full curl command string |
| `target` | `fetch` \| `axios` \| `node-fetch` \| `got` \| `ky` | yes |  |
| `annotate` | `boolean` | no |  |
| `typescript` | `boolean` | no |  |
| `retryConfig` | `object` | no |  |
| `extractEnvVars` | `boolean` | no |  |

## Output Schema

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `code` | `string` | yes |  |
| `envVars` | `array` | no |  |
| `imports` | `string` | no |  |
| `warnings` | `array` | no |  |

## How To Use

1. **Paste your curl command** — Drop in the full curl command, including all flags and headers.
2. **Choose a target library** — fetch (browser/Node 18+), axios, node-fetch, got, or ky.
3. **Configure options** — Toggle typescript, extractEnvVars, annotate, and configure retryConfig if needed.
4. **Run the converter** — Click Run or press Ctrl+Enter to convert. Output is generated instantly.
5. **Copy and integrate** — Copy the code, imports, and env var manifest into your project.

## FAQs

**What does the env var extraction do?**

It detects Authorization header values, API keys in query params, and bearer tokens, replacing them with process.env.VARIABLE_NAME references. The original values are returned in the envVars manifest with the original masked, so you know exactly what was extracted.

**How does the retry wrapper work?**

When retryConfig is provided, the generated code is wrapped in an async retry loop with the specified strategy (exponential or linear) and status codes (e.g. [429, 502, 503]). The output is production-ready — no additional scaffolding required.

**Which curl flags are supported?**

Standard flags: -X (method), -H (headers), -d / --data / --data-raw (body), -b (cookie), --user (basic auth), -F (multipart), -L (follow redirects), --compressed. Unsupported flags are returned in the warnings array so you can address them manually.

**Can I use this tool via the MCP API?**

Yes. The tool is registered on the obfus.link MCP server at https://obfus.link/mcp. Call it from any MCP-compatible agent with a Shared Payment Token. The MCP tool name matches the snake_case slug shown in the integration snippet.

## Tags

`curl` · `fetch` · `axios` · `http` · `api` · `convert`

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*Canonical URL: https://obfus.link/tool/curl-to-fetch*  
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