Backed by Y CombinatorLet your agent edit Word documents while maintaining styling & formatting.
from fastmcp import Client
client = Client(
"https://app.vespper.com/mcp",
auth="TOKEN",
)
async with client:
tools = await client.list_tools()
# Use the tools in your agentMade by professionals from
3x faster, 2x cheaper, more accurate
Better, cheaper & faster.
Vespper is 2.7–2.9× cheaper and 2.7–3.5× faster than the DOCX skill, while being more accurate.
- 1Vespper DOCX$0.054
- 2DOCX Skill$0.157
- 3Office CLI MCP$0.240
- 1Vespper DOCX81.4%
- 2DOCX Skill78.1%
- 3Office CLI MCP65.2%
- 1Vespper DOCX14.6s
- 2DOCX Skill51.5s
- 3Office CLI MCP57.1s
Across all 10 matched comparisons, five alternatives × two models, the median competitor costs 2.43× as much, while Vespper costs 58.9% less. Vespper is 16.2 percentage points more accurate and 1.97× faster, with 47.7% lower latency making it the best option for agents to edit .docx files.
Vespper v1.0 benchmark results using GPT-5.6 Sol. Cards compare the same task against the DOCX Skill and Office CLI MCP. Full methodology in our blog.
Kickstart your next agent with production-ready templates.
Sample Word add-in
Coming soonA complete Office add-in that brings agentic document editing directly into Microsoft Word.
List tracked changes
Coming soonExtract every insertion, deletion, and move from a document's revision history as structured data.
Compare docs
Coming soonCompare two Word documents and surface differences as clean HTML diffs with change metadata.
Mail merge agent
Coming soonGenerate personalized Word documents from a spreadsheet of recipients, tracked and reviewable.
Frequently asked questions
In progress. Vespper is built with enterprise security in mind, and our systems are in progress to being SOC 2 compliant. This ensures your data is handled with the highest standards of confidentiality and integrity.
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