fp-conv
NPM · FP-CONV-MCP
Encode, decode, and convert numbers across FP32, FP16, BF16, TF32, FP8/6/4, and integer formats.
Available components
Last scanned (10 hours ago)
Scores higher than 61% of npm servers
Category AI and Machine Learning
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
- 30 of 92 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to sw23/fp-conv). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 4 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability67
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 930 tokens (~186/item across 5 items; 5 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 Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
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 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 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
Unverified: 1 category
A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.
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.
- 1 Nov 26 +15
- Malware scan: unverified → pass ▲ security
- Security disclosure: unverified → fail ▼ functional
- 31 Oct 26 64
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 5 Nov 2026 · Analysed npm/fp-conv-mcp@1.5.1
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | sw23/fp-conv |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/sw23/fp-conv/.github/workflows/publish-mcp.yml@refs/tags/mcp-v1.5.1 |
| Rekor log index | 3609188532 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:f93544351d3ea0f35ff62e20055c07cfc26bd9df69f376715692b9dfd5573fc69c12ef534abf23c20e41ac977e995ceaf21f5803a6339ebe0debe62d1 |
Background: How many MCP packages publish verified provenance →
Dependencies 92 packages
| Packages resolved | 92 |
|---|---|
| Stale | 30 |
| 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_format Convert format ~448
Convert a value or bit pattern from one floating-point or integer format to another. Returns full encoding details for both formats and precision loss analysis.
| Name | Type | Req | Description |
|---|---|---|---|
| bits | string | – | The source as a bit pattern in the input format, binary (e.g. "0011110000000000") or hex with 0x prefix (e.g. "0x3C00"), read as decode_bits reads it and converted exactly as given. Use it to convert… |
| inputFormat | string|object | yes | Source format preset key or custom format object. |
| nanMode | string | – | What a NaN source operand becomes; it has no effect on any other input. "canonical" gives the output format's canonical quiet NaN. "preserve" keeps the sign and as many high-order payload bits as fit… |
| outputFormat | string|object | yes | Target format preset key or custom format object. |
| overflowMode | string | – | What an out-of-range output magnitude becomes; the source operand is built with the input format's defaults. "overflow" produces Infinity (or NaN when the format has no Infinity); "saturate" clamps t… |
| roundingMode | string | – | Rounding mode for encoding into the output format; the source operand is built with the input format's defaults. Options: "tiesToEven" (default, IEEE 754), "tiesToAway", "towardZero", "towardPositive… |
| value | number|string | – | The value to convert. Accepts a number, hex string (read as an integer, e.g. "0xFF" is 255), or keyword. Exactly one of "value" and "bits" is required. |
No output schema declared.
No examples provided.
decode_bits Decode bits ~95
Decode a binary or hexadecimal bit-pattern into a specified format. Returns the decimal value and full component breakdown.
| Name | Type | Req | Description |
|---|---|---|---|
| bits | string | yes | Bit-pattern as a binary string (e.g. "0100000001001000") or hex string with 0x prefix (e.g. "0x4048"). |
| format | string|object | yes | Format preset key (e.g. "fp16") or custom format object. |
No output schema declared.
No examples provided.
encode_number Encode number ~283
Encode a decimal number (or special value like Infinity / NaN) into a specified floating-point or integer format. Returns binary, hex, and component breakdown.
| Name | Type | Req | Description |
|---|---|---|---|
| format | string|object | yes | Format preset key (e.g. "fp32", "int8") or custom format object. For floating-point: { signBits, exponentBits, mantissaBits, bias?, hasInfinity?, hasNaN?, hasSubnormals? }. For integer: { bits, signe… |
| overflowMode | string | – | What an out-of-range magnitude becomes. "overflow" produces Infinity (or NaN when the format has no Infinity); "saturate" clamps to the largest finite value. Omit to use the per-format default (overf… |
| roundingMode | string | – | Rounding mode for encoding the value. Options: "tiesToEven" (default, IEEE 754), "tiesToAway", "towardZero", "towardPositive", "towardNegative". |
| value | number|string | yes | The value to encode. Accepts a number, hex string (e.g. "0xFF"), or keyword ("infinity", "-infinity", "nan"). |
No output schema declared.
No examples provided.
get_format_info Get format info ~62
Get detailed information about a floating-point or integer format, including value range (max/min normal, subnormal), bias, and special value support.
| Name | Type | Req | Description |
|---|---|---|---|
| format | string|object | yes | Format preset key (e.g. "bf16") or custom format object. |
No output schema declared.
No examples provided.
list_formats List formats ~42
List all available floating-point and integer format presets supported by this converter. Returns format keys, names, categories, and parameters (bits, exponent, mantissa, etc.).
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the fp-conv MCP server?
fp-conv runs locally as an npm package, launched with npx -y fp-conv-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 · fp-conv-mcp
claude mcp add sw23-fp-conv-mcp -- npx -y fp-conv-mcp
What is the fp-conv MCP server?
fp-conv is an MCP server listed in the public MCP registry as io.github.sw23/fp-conv-mcp. Encode, decode, and convert numbers across FP32, FP16, BF16, TF32, FP8/6/4, and integer formats. This page covers its npm package (fp-conv-mcp).
Is the fp-conv MCP server safe to use?
fp-conv scores 79 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. 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 fp-conv MCP server expose?
fp-conv exposes 5 tools: list_formats, encode_number, decode_bits, convert_format, get_format_info. Their descriptions and schemas cost roughly 930 tokens of context every time the server is loaded.
Is the fp-conv MCP server still maintained?
fp-conv is still listed as active in the MCP registry. We last reached this channel on 5 November 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 fp-conv MCP server under?
fp-conv declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.