pdfedit-mcp
The agent-facing half of the PDF Edit API (https://api.niubai.vip): edit text
inside PDFs that already exist -- replace, delete, redact, insert, fill forms --
keeping the original fonts and layout, with every change verified before it is
returned.
Try it in 30 seconds, no key
The server works with no key at all: 20 pages a day per IP, outputs marked
SAMPLE, local files included. Nothing to sign up for:
Claude Code
claude mcp add pdfedit -- npx -y @niubai/pdfedit-mcp
Cursor / VS Code / Claude Desktop — the buttons above, or this server entry:
{ "pdfedit": { "command": "npx", "args": ["-y", "@niubai/pdfedit-mcp"] } }
Then ask your agent: "In ./contract.pdf replace 'Acme Ltd' with 'Acme GmbH' and
redact the IBAN." The edited PDF is written next to the original and a before/after
picture of every change comes back. A free API key (200 pages a month, no watermark on
ordinary documents) takes one email at https://api.niubai.vip; set it as
PDFEDIT_API_KEY. Web clients that cannot run a local server (claude.ai) use the hosted
endpoint https://pdfedit-mcp-remote.niubai-pdfedit-remote-worker.workers.dev/mcp with PDF URLs.
No Node? Install the skill
The same API as an Agent Skill: a SKILL.md plus a stdlib-only Python script, for Claude Code, Codex, Cursor, Gemini CLI and any other agent that runs shell commands. Nothing to install but the skill itself:
npx skills add zp130221/pdfedit-mcp
Claude Code can also take the whole thing as a plugin, MCP server and skill together:
/plugin marketplace add zp130221/pdfedit-mcp
/plugin install pdfedit@pdfedit
| What | Where |
|---|---|
| The whole API in one file, for an AI assistant (give it to a model and it knows how to call the API) | api.niubai.vip/llms-full.txt |
MCP server (npx -y @niubai/pdfedit-mcp) for Claude Code, Cursor, Claude Desktop | mcp/pdfedit-mcp/ |
Agent skill (npx skills add zp130221/pdfedit-mcp), no Node needed | skills/pdfedit/ |
TypeScript SDK (@niubai/pdfedit) | sdk/typescript/ |
| Python SDK | sdk/python/ |
| OpenAPI document the SDKs and tool schemas are generated from | openapi/openapi.json |
| What it does, pricing, ten before/after examples | docs/public/ |
Everything here is MIT. The hosted API itself is a proprietary service.
The API is operated by Niubai (https://niubai.vip), support zp130221@163.com; payments are collected by Creem as merchant of record, so card details never reach the service and the cancel link is on the receipt. Terms, privacy and refunds: https://api.niubai.vip/legal. Documents are deleted within 24 hours and are never used for training.