Mmcp.market

Stamp MCP server

by theoddden·io.github.theoddden/stamp·v0.6.1
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Concierge MCP for agentic workflows: verified time + drift, uuid, diff, calc, attest, verify.

B70/100grade B
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Safety scan
B70/100

full report

Adoption
New

442 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Stamp tools (6)

write = sends, deletes, buys or posts
  • attestFree

    Wrap any payload in a tamper-evident record: a UUID, a timestamp (NTP-verified when reachable, local clock otherwise -- the record says which), and a sha256 over the canonical record. One call, the record is complete and tamper-evident.

  • calculateFree

    Evaluate a math expression safely: + - * / // % **, parentheses, functions (abs round min max sqrt floor ceil exp log log2 log10 pow sin cos tan), constants pi e tau inf. Parsed to an AST and only whitelisted nodes are computed -- no eval(), no names, no arbitrary code.

  • diffFree

    Unified diff between two texts, with added/removed line counts. For reviewing edits, comparing outputs, or validating transformations.

  • generate_uuidFree

    Generate one or more random UUIDv4 identifiers -- for records, sessions, and IDs created in agent pipelines.

  • get_timeFree

    Query an NTP server for current UTC time and this clock's offset. Appends the sample to the drift log and returns the trend inline: current offset, drift rate (ms/day), and whether the clock is stable, drifting, or accelerating.

  • verifyFree

    Check a record produced by attest: recompute the sha256 over the record and compare. Pass/fail -- did this payload produce this hash at this timestamp. Any modified field breaks it.

Public scan report

scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it

1 medium
  • Code scan7 source files scanned20/25
  • Live reliabilityremote reachable in 747ms20/20
  • Tool poisoning6 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancerepository not readable: repo not found3/15
  • Maintainer identityno repository or website to verify2/10

Findings (1)

  • mediumeval / new Function usedexec.eval
    stamp_mcp-0.6.1/stamp_mcp/server.py: …ist of operators and math functions. No eval(). attest -- wrap a payload …
Overall 70/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Install directly

claude mcp add --transport http stamp https://stamp-mcp.terradev.cloud/mcp
Add to Cursor

Stamp: common questions

Is Stamp MCP server safe?
Mostly: it is graded B (70/100). Read the Stamp safety report
How do I install Stamp?
It runs remotely at stamp-mcp.terradev.cloud. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Stamp need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Stamp maintained?
The latest release is v0.6.1.
Is Stamp up?
100% of our last 5 checks got an answer. We check remote servers about four times a day.
What can I use instead of Stamp?
Servers from other publishers that do the same job: DocGuard MCP server.

Alternatives to Stamp

Same job from other publishers: the closest match first, then the best rated.

  • DocGuard
    Deterministic doc-drift detection: guard, score, explain, verify-claims and diagnose MCP tools.
    A

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