modelcontextprotocol / modelcontextprotocol/servers
Filesystem cannot read large file
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- TypeScript
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Description
Describe the bug
Claude could not read the file data.csv with error:
Error
File not found: No file named "d:/mcp_sandbox/data.csv"
I created a truncated version data1.csv which is read out
To Reproduce
Steps to reproduce the behavior:
- put both the attached file into the same directory that file system is allowed to access.
- prompt claude to read each file
Expected behavior
I would expect both files to be readable.
Logs
If applicable, add logs to help explain your problem.
Additional context
Add any other context about the problem here.
data.csv
data1.csv
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the behavior with the attached data.csv and data1.csv files in the permitted directory, following the two reproduction steps. Compare how the filesystem server handles each file and trace the error for data.csv. Done means both files can be read successfully.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 45/100