What is the Model Context Protocol?

MCP is an open standard that lets AI assistants call external tools. An MCP client such as Claude or Cursor connects to a server, discovers the tools it exposes, and can then invoke them during a conversation.

Which tools are available over MCP?

Every tool with a server-side processor — formatters, validators, converters, encoders, hashing, regex, colour and text utilities. Browser-only tools such as image editors and PDF manipulation are not reachable over MCP.

Do MCP calls use credits?

Yes. Each run costs the same credits as running it on the site, deducted from the account that owns the API key.

How do I authenticate?

Create an API key in your dashboard and send it as an Authorization: Bearer header. The server rejects unauthenticated requests.

Model Context Protocol

Give your AI assistant 831+ developer tools

DevTools Surf runs a remote MCP server. Point Claude, Cursor, VS Code or any MCP client at it and your assistant can format JSON, decode JWTs, convert YAML, test regex and run 831 other tools without leaving the conversation.

Connect your client

claude mcp add --transport http devtools-surf https://devtools.surf/api/mcp \
  --header "Authorization: Bearer YOUR_API_KEY"

Endpoint: https://devtools.surf/api/mcp — replace YOUR_API_KEY with a key from your dashboard.

What the server exposes

list_tools
Browse the catalogue, paginated and filterable
search_tools
Find a tool by name, description or keyword
list_categories
All categories with counts
get_tool_info
Full detail for one tool, plus related ones
get_sample
A ready-made sample input for any tool
run_tool
Execute a tool and get the output back
get_credits
Check the remaining balance on your key

Questions

What is the Model Context Protocol?: MCP is an open standard that lets AI assistants call external tools. An MCP client such as Claude or Cursor connects to a server, discovers the tools it exposes, and can then invoke them during a conversation.
Which tools are available over MCP?: Every tool with a server-side processor — formatters, validators, converters, encoders, hashing, regex, colour and text utilities. Browser-only tools such as image editors and PDF manipulation are not reachable over MCP.
Do MCP calls use credits?: Yes. Each run costs the same credits as running it on the site, deducted from the account that owns the API key.
How do I authenticate?: Create an API key in your dashboard and send it as an Authorization: Bearer header. The server rejects unauthenticated requests.

Get an API key

Keys live in your dashboard. New accounts start with 1,000 credits.

Create an API key