Reconstitution Calculator
NPM · RECONSTITUTION-CALCULATOR-MCP
Lab math: reconstitution, unit conversion, C1V1, molarity, percent w/v, serial dilution.
Available components
Last scanned (6 hours ago)
Scores higher than 38% of npm servers
Category Health and Science
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 92 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency19
- Repository check failed: no source repository is declared. See how to fix → View diagnostics → Fail
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 1 days ago).Pass
- Security-disclosure policy not yet verified: we couldn't inspect the source repository.Unverified
Schema Quality & AI Usability75
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 792 tokens (~132/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management7
- Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 18 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Oct 26 65
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 18 Oct 2026 · Analysed npm/reconstitution-calculator-mcp@1.0.0
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 92 packages
| Packages resolved | 92 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
convert_units Convert units ~152
Convert a value between units of the same kind: mass, volume or mass concentration. Supported units: kg, g, mg, mcg, ug, µg, ng, L, mL, uL, µL, nL, g/L, mg/mL, mg/L, mcg/mL, ug/mL, µg/mL, mcg/L, ug/L, µg/L, ng/mL. For laboratory calculations only.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Unit to convert from, for example mg, mL or mg/mL. |
| to | string | yes | Unit to convert to, of the same kind as from. |
| value | number | yes | Value to convert. |
No output schema declared.
No examples provided.
dilution_c1v1 Dilution C1V1 = C2V2 ~102
Solve C1 x V1 = C2 x V2 for the single missing value. Give exactly three of c1, v1, c2, v2 in consistent units. Also returns the diluent volume to add. For laboratory calculations only.
| Name | Type | Req | Description |
|---|---|---|---|
| c1 | number | – | Stock concentration. |
| c2 | number | – | Final concentration. |
| v1 | number | – | Stock volume. |
| v2 | number | – | Final volume. |
No output schema declared.
No examples provided.
molarity Molarity ~172
Relates mass, molarity, volume and molecular weight (mass g = M x L x g/mol). Give molarity to get the mass needed, or give mass to get the molarity. For laboratory calculations only.
| Name | Type | Req | Description |
|---|---|---|---|
| mass | number | – | Mass of solute. Give this or molarity, not both. |
| mass_unit | string | – | Unit of mass. Default g. |
| molarity | number | – | Target molarity. Give this or mass, not both. |
| molarity_unit | string | – | Unit of molarity. Default M. |
| mw | number | yes | Molecular weight in g/mol. Must be greater than 0. |
| volume | number | yes | Solution volume. Must be greater than 0. |
| volume_unit | string | – | Unit of volume. Default mL. |
No output schema declared.
No examples provided.
percent_solution Percent w/v solution ~79
Grams of solute for a percent weight per volume solution (g = percent x mL / 100). For laboratory calculations only.
| Name | Type | Req | Description |
|---|---|---|---|
| final_volume_ml | number | yes | Final volume in mL. Must be greater than 0. |
| percent_wv | number | yes | Percent w/v, greater than 0 and at most 100. |
No output schema declared.
No examples provided.
reconstitution_concentration Reconstitution concentration ~157
Concentration of a lyophilized powder after adding a diluent volume, in mg/mL and mcg/mL. Optionally gives the volume in mL and µL that holds a wanted amount. For laboratory calculations only.
| Name | Type | Req | Description |
|---|---|---|---|
| diluent_ml | number | yes | Volume of diluent added, in mL. Must be greater than 0. |
| powder_amount | number | yes | Mass of powder in the vial. Must be greater than 0. |
| powder_unit | string | – | Unit of powder_amount. Default mg. |
| wanted_amount | number | – | Optional mass you want to draw out. Must be greater than 0. |
| wanted_unit | string | – | Unit of wanted_amount. Default mcg. |
No output schema declared.
No examples provided.
serial_dilution Serial dilution ~130
Concentration in each tube of a serial dilution, plus the transfer and diluent volume per tube. Output concentrations use the same unit as start_conc. For laboratory calculations only.
| Name | Type | Req | Description |
|---|---|---|---|
| factor | number | yes | Dilution factor per step. Must be greater than 1. |
| start_conc | number | yes | Starting concentration. Must be greater than 0. |
| steps | integer | yes | Number of tubes, a whole number from 1 to 20. |
| volume_per_tube_ml | number | yes | Final volume in each tube, in mL. Must be greater than 0. |
No output schema declared.
No examples provided.
How do I install the Reconstitution Calculator MCP server?
Reconstitution Calculator runs locally as an npm package, launched with npx -y reconstitution-calculator-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · reconstitution-calculator-mcp
claude mcp add io-peptaralabs-reconstitution-calculator -- npx -y reconstitution-calculator-mcp
What is the Reconstitution Calculator MCP server?
Reconstitution Calculator is an MCP server listed in the public MCP registry as io.peptaralabs/reconstitution-calculator. Lab math: reconstitution, unit conversion, C1V1, molarity, percent w/v, serial dilution. This page covers its npm package (reconstitution-calculator-mcp).
Is the Reconstitution Calculator MCP server safe to use?
Reconstitution Calculator scores 66 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 18 October 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Reconstitution Calculator MCP server expose?
Reconstitution Calculator exposes 6 tools: reconstitution_concentration, convert_units, dilution_c1v1, molarity, percent_solution, serial_dilution. Their descriptions and schemas cost roughly 792 tokens of context every time the server is loaded.
Is the Reconstitution Calculator MCP server still maintained?
Reconstitution Calculator is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the Reconstitution Calculator MCP server under?
Reconstitution Calculator declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.