calculator mcp server
io.github.cyanheads/calculator-mcp-server
Evaluate, simplify, and differentiate mathematical expressions.
— the operator's own registry description reported
Publisher io.github.cyanheads · first seen 2026-08-12 · endpoint https://calculator.caseyjhand.com/mcp
Dependency rating derived
block — dead / unreachable · kind unknown · V n/a
Cluster unreachable · distinctiveness —. Every figure is a percentile or class within the 11,094-server census — see the whole spectrum.
🔏 Signed receipt rr_7a44d3e9d28830d17caacd73 · ed25519 · key rs-rcpt-2026-08 — this rating is tamper-evident; an agent gets the full signature from check_server and can verify it against the published key.
● observed · ◐ derived · ○ reported — the verdict synthesizes Q1–Q4; Q5 is context. Methodology →
History observed
Every probe we made, oldest → newest (2 shown, 2026-08-12 → 2026-08-14). Green answered · amber answered-but-walled · red no useful answer. A gap in our cadence is a gap in coverage, not evidence about the server.
changelog (2 events)
| date | type | what changed |
|---|---|---|
| 2026-08-14 | outcome | http_error (was ok_tools) |
| 2026-08-12 | outcome | first probe: ok_tools |
What kind of tools these are derived
Verification only means something relative to a tool's NATURE — an email-sender has no "true answer", a generator has no answer key. Classification evidence: classified from the operator's own registry description — REPORTED, not observed (tools were not visible to the probe). What checking applies to each kind (the full methodology →):
| nature | tools | meaning | what checking applies |
|---|---|---|---|
| unclassified | 1 | not classifiable from its text | Tier-1 only until its tools describe themselves |
Tools last seen observed
Truth checks observed
Not in the Tier-2 trade lane, or not yet checked. Tier-2 re-derives a server's answers against published primary sources — see truth checks.
Drift observed
No confirmed drift on record. Baseline set 2026-08-14; changes appear here after human review.
Looking for an alternative?
This server doesn't answer, but these live, allow-verdict servers describe themselves similarly — similar by what they say they do — never verified drop-in replacements; check each one before depending on it.
| server | verdict | shared terms |
|---|---|---|
| io.github.clouatre-labs/math-mcp-learning-server Educational MCP server with 17 math/stats tools, visualizations, and persistent workspace | allow | calculate, evaluate, expressions, mathematical |
| engineer.calc/calc 88 free engineering calculators: RF link budgets, LoRa/Meshtastic, PCB, solar, homelab. Keyless. | allow | calculate, differentiate, expressions, simplify |
| io.github.pipeworx-io/mathjs Math.js MCP — wraps the mathjs.org API (free, no auth) | allow | evaluate, expressions, mathematical, simplify |
| io.github.ColinHughes2121/gocreative-agent-api 17-model LLM gateway + 350+ data/KYB/sanctions tools. Pay-per-call USDC via x402, no API key. | allow | calculate, evaluate, expressions, simplify |
| io.github.pipeworx-io/newton Newton MCP — wraps the Newton math solver API (free, no auth) | allow | expressions, mathematical, simplify |
raw probe records
| probed (UTC) | outcome | http | ms | protocol |
|---|---|---|---|---|
| 2026-08-14T19:59:28Z | http_error | 502 | 106 | |
| 2026-08-12T05:34:40Z | ok_tools | 200 | 100 | 2025-06-18 |
Watch or embed this verdict
Operators: put the live verdict in your README — it updates with every census, links back here, and is a dated observation, never a warranty:
[](https://robinsaige.com/s/io.github.cyanheads/calculator-mcp-server)
Depend on it? Subscribe to its change feed — outcome changes and confirmed drift, no account needed. Building on it? The full dossier as JSON — verdict, rating, truth checks, history — stable enough to gate CI on.