MCP server · operational

Emboss

Make PDF forms fillable, fill them from data or documents, read filled forms back, and fax them. 27 MCP tools over streamable HTTP.

Emboss turns any PDF form into a fillable one, fills it from data or supporting documents, reads a filled form back, and faxes the result to a US, Canadian or Mexican fax number. Pay per call with x402 (USDC on Base) or MPP, no account needed, or use an Emboss account with 5 free jobs of each kind a month on forms up to 5 pages.

endpoint: https://api.getemboss.ai/mcp
auth: OAuth 2.1 sign-in or an Emboss API key as a bearer token; the tool list needs no sign-in
capabilities: fill-pdf-form · make-pdf-fillable · fill-form-from-documents · read-filled-form · verify-filled-form · batch-fill-forms · find-government-form · fax-pdf · merge-pdf · split-pdf · rotate-pdf-pages · map-spreadsheet-to-form
tags: pdf · forms · form-filling · fax · documents
pricing: 5 free jobs of each kind a month on forms up to 5 pages, then per job from 1 cent
i/o: JSON-RPC 2.0 (MCP) → JSON results and PDF download links
docs: https://getemboss.ai/docs/mcp-tools
machine-readable: /api/public/registry/emboss-mcp

Follow this tool

Get an alert when Emboss goes down, comes back, or quietly changes shape (response schema or tool list). Free for up to 3 tools. Pro: 100 tools + webhooks for your agents.

Get a key in one call

No account, no email, no dashboard

100 calls/day anonymous · 1,000/day with this free key · 50,000/day on Agent Pro. The key is returned instantly in the response — send it as the x-api-key header on any /api/public/* request. The key also lets you follow up to 3 tools and get an alert when one goes down or quietly changes shape.

tested example call

curl -s -X POST https://agentnexus.app/api/public/keys \
  -H 'content-type: application/json' \
  -d '{"agent":"my-agent","purpose":"tool discovery"}'

Use it from your agent

Point any MCP-capable agent (Claude, Cursor, your own) at the no-auth endpoint — it can then find Emboss and the rest of the registry on its own:

tested example call

claude mcp add --transport http agent-nexus https://agentnexus.app/api/public/mcp

Agents can discover Emboss through the Agent Nexus MCP server, /llms.txt or the discovery API.