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com.fluentedi/tools

by fluentedi.com · remote · no sign-in to list tools · v1.1.0 · published by com.fluentedi

49 free agent tools: WHOIS, PDF to text, email checks, FX rates, X12 EDI, JSON repair. No API key.

Final · 1Changes · 11
CompareRegistry entry

19 tools: 1 do something that can't be undone, 11 change things and 7 only read.

Scanned Oct 21, 2026

6 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http tools https://fluentedi.com/mcp

Findings

Matches of fixed checks, with the text they matched.

6 warn
  • Warntime_convert

    The server marks "time_convert" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "time_convert" says "convert": a word for a change.

    What this check looks for
  • Warnjson_query

    The server marks "json_query" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "json_query" says "query": a word for reading.

    What this check looks for
  • Warndoc_extract

    The server marks "doc_extract" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The description's first verb is "convert": a word for a change.

    What this check looks for
  • Warnmath_eval

    The server marks "math_eval" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "evaluate": a word for a change.

    What this check looks for
  • Warnedi_validate

    The server marks "edi_validate" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "edi_validate" says "validate": a word for reading.

    What this check looks for
  • Warntool_call

    The server marks "tool_call" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "tool_call" says "call": a word for a change.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

19 tools

Can't be undone 1Claude Code: ask
  • time_convertConverts one instant into any number of timezones, handling daylight saving transitions correctly.1 finding

    Why it is in this group

    • The name "time_convert" says "convert": a word for a change.
    • The input addresses people (input.to): what it sends cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "time_convert" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "time_convert" says "convert": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Converts one instant into any number of timezones, handling daylight saving transitions correctly. Naive inputs (no Z or offset) are read as wall-clock time in `from`; inputs carrying an offset are absolute.

    Annotations the server declares

    • title: Convert a timestamp between timezones.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Changes things 11Claude Code: ask
  • cron_nextParses a standard 5-field cron expression (or 6-field with leading seconds, or a macro like @daily), validates it, describes it in plain English, and computes the next run times in…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Parses a standard 5-field cron expression (or 6-field with leading seconds, or a macro like @daily), validates it, describes it in plain English, and computes the next run times in a given timezone with daylight-saving handled. Use it before writing a schedule to config — cron's day-of-month/day-of-week OR-semantics and step syntax are a common source of silently wrong schedules.

    Annotations the server declares

    • title: Validate a cron expression, explain it in English, and list its next run times.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • doc_extractConverts a document to markdown or plain text: pass a public URL or the file itself as base64, and get back the content with headings, tables and lists preserved, at a fraction of …1 finding

    Why it is in this group

    • The description's first verb is "convert": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "doc_extract" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The description's first verb is "convert": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Converts a document to markdown or plain text: pass a public URL or the file itself as base64, and get back the content with headings, tables and lists preserved, at a fraction of the tokens that rendered pages cost. Use it when a harness has no native reader for the format — .docx, .xlsx, .odt and .numbers rarely have one — when a document is only a URL away, or when a long PDF's text matters and its layout does not. Handles PDF (.pdf), Word (.docx), Excel (.xlsx, .xlsm, .xlsb, .xls), OpenDocument (.odt, .ods), Apple Numbers, CSV, HTML, XML, and plain-text formats such as .txt and .md. The format is detected from magic bytes, not trusted from the file name, so a PDF served from a .php URL still converts. Two honest limits: a scanned PDF with no text layer has nothing to extract (this is conversion, not OCR), and legacy binary .doc and .ppt files are not readable — resave them as .docx or .pptx. Images are refused rather than described. Documents up to 10 MB.

    Annotations the server declares

    • title: Extract the text of a PDF, Word, Excel or other document as markdown or plain text.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • edi_buildCompiles structured JSON into standards-valid X12.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Compiles structured JSON into standards-valid X12. The parts that get documents rejected are exactly the parts a language model cannot hold in its head: the 856 hierarchy needs sequential HL IDs where every level names its parent's ID, and on a multi-carton, multi-SKU shipment that bookkeeping goes wrong silently. The ISA header is fixed-width — 106 characters exactly, every element space-padded to size — and one character out crashes the receiver's translator. Segment counts in SE01, CTT01, GE01 and IEA01 must agree with what was actually emitted. All of that is computed here rather than written by hand.

    Annotations the server declares

    • title: Generate a valid X12 856 ASN or 850 purchase order from JSON, with correct HL pointers and envelope counts.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • edi_validateRuns the structural checks a trading partner runs before rejecting a file: control numbers matching between the ISA/IEA, GS/GE and ST/SE header and trailer pairs, declared counts m…1 finding

    Why it is in this group

    • The name "edi_validate" says "validate": a word for reading.
    • The description's first verb is "run": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "edi_validate" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "edi_validate" says "validate": a word for reading.

      What this check looks for
    Description, as the server wrote it
    Runs the structural checks a trading partner runs before rejecting a file: control numbers matching between the ISA/IEA, GS/GE and ST/SE header and trailer pairs, declared counts matching actual counts, and - for an 856 - the HL hierarchy. HL faults are the usual cause of ASN rejections and chargebacks: a parent ID naming no existing node, a duplicate HL01, an unknown level code, a missing carton level. Every finding names the segment and states what the value should have been.

    Annotations the server declares

    • title: Check an X12 document's envelope integrity and 856 HL hierarchy for the errors that cause rejections.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • hashComputes cryptographic digests and HMAC signatures.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Computes cryptographic digests and HMAC signatures. Returns hex and base64 at once, so a webhook signature can be compared in whichever encoding the provider uses. MD5 and CRC32 are included for checksums and legacy fixtures; they are not secure for authentication.

    Annotations the server declares

    • title: Hash or HMAC-sign text with MD5, SHA-1, SHA-256/384/512 or CRC32.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • http_assertThe difference between an agent believing it succeeded and knowing it did.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    The difference between an agent believing it succeeded and knowing it did. http.check tells you a URL is alive; this tells you it is correct. Assert the status, response headers, values at JSONPath expressions, substrings in the body and a latency ceiling, and get back one boolean plus a per-check breakdown showing expected against actual. An agent that has just deployed, migrated or reconfigured something can prove the outcome rather than reporting the absence of an error, which is the usual way agents claim a success they have not actually achieved.

    Annotations the server declares

    • title: Verify a URL actually returns what you expected — status, headers, JSON values — and return a pass/fail proof.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • json_queryRuns a JSONPath query and returns the matching values with their concrete paths.1 finding

    Why it is in this group

    • The name "json_query" says "query": a word for reading.
    • The description's first verb is "run": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "json_query" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "json_query" says "query": a word for reading.

      What this check looks for
    Description, as the server wrote it
    Runs a JSONPath query and returns the matching values with their concrete paths. Supports property access, array indexing (including negative indices), slices, wildcards, recursive descent (`..`) and filters (`[?(@.price > 10)]`). Pull three fields out of a large API response without carrying the whole document through context.

    Annotations the server declares

    • title: Extract values from a JSON document with a JSONPath expression.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • json_repairTakes JSON that almost parses and makes it parse: markdown code fences, prose wrapped around the object, trailing commas, single or smart quotes, unquoted keys, Python True/False/N…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Takes JSON that almost parses and makes it parse: markdown code fences, prose wrapped around the object, trailing commas, single or smart quotes, unquoted keys, Python True/False/None, comments, NaN, and brackets left open by a truncated response. Every change is reported, so the caller learns what its generator got wrong rather than silently depending on a fixer. When the input cannot be salvaged it returns the precise line, column and a caret pointing at the offending character — which is what makes the next attempt succeed instead of guessing.

    Annotations the server declares

    • title: Repair malformed JSON and pinpoint the exact line and column when it cannot be repaired.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • math_evalEvaluates arithmetic with correct operator precedence, parentheses, exponentiation, factorials, named variables and 30+ functions.1 finding

    Why it is in this group

    • The description's first verb is "evaluate": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "math_eval" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "evaluate": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Evaluates arithmetic with correct operator precedence, parentheses, exponentiation, factorials, named variables and 30+ functions. Language models perform arithmetic by pattern-matching and quietly get long multiplications and compounding wrong; this computes the number instead of predicting it.

    Annotations the server declares

    • title: Evaluate a mathematical expression exactly.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • time_windowAnswers the questions a deadline actually poses: is this instant inside the window, how long until it opens or closes, and if it is outside, by how much.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Answers the questions a deadline actually poses: is this instant inside the window, how long until it opens or closes, and if it is outside, by how much. Optionally compares two windows for overlap. A window comparison that silently succeeds against the wrong bounds is a failure mode that does not raise an error anywhere — the ship window is missed, or the ASN is late, and the only symptom is a chargeback later. This computes the boundary instead of assuming it.

    Annotations the server declares

    • title: Test whether an instant falls inside a time window, and by how much it misses.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • tool_callDispatches to any tool in the catalogue.1 finding

    Why it is in this group

    • The name "tool_call" says "call": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "tool_call" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "tool_call" says "call": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Dispatches to any tool in the catalogue. Most clients cap how many tools they will hold at once — Cursor drops everything past roughly forty across all servers combined — so only a core set is listed by default. Everything else is reachable here. Find a name with tool.search, check its shape with tool.describe, then call it through this.

    Annotations the server declares

    • title: Invoke any tool by name, including ones not in the default listing.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 7Claude Code: allow
  • domain_lookupAnswers the questions WHOIS used to answer, over RDAP — the structured protocol the registries themselves now serve — with no key and no scraping: who registered a domain, when it …No findings

    Why it is in this group

    • The name "domain_lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    Answers the questions WHOIS used to answer, over RDAP — the structured protocol the registries themselves now serve — with no key and no scraping: who registered a domain, when it expires, which registrar and nameservers it uses, whether transfers are locked, and whether DNSSEC is signed. Give it an IP address instead and it returns the owning network: name, CIDR range, and the responsible registry. A domain that does not resolve in RDAP is reported as likely available to register — an answer, not an error. These are live registry facts that no training corpus can supply: registrations, expiries and transfers happen daily, and an agent that guesses at them guesses wrong.

    Annotations the server declares

    • title: WHOIS for a domain or IP: registration and expiry dates, registrar, nameservers, status — or the network that owns an address.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • edi_parseReads a raw ASC X12 interchange and returns it as JSON: delimiters taken from the ISA header, the ISA/GS/ST envelope decoded, every segment split into named elements, and a documen…No findings

    Why it is in this group

    • The description's first verb is "read": a word for reading.
    Description, as the server wrote it
    Reads a raw ASC X12 interchange and returns it as JSON: delimiters taken from the ISA header, the ISA/GS/ST envelope decoded, every segment split into named elements, and a document-specific summary - purchase order lines for an 850, the HL shipment hierarchy and SSCCs for an 856, invoice totals for an 810. EDI is positional and delimiter-sensitive, and unreadable without a spec table; reading it by inspection produces confident nonsense, which is why this is a tool rather than a prompt.

    Annotations the server declares

    • title: Parse an X12 EDI document (850, 856, 810, 855, 997 and others) into structured JSON.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • http_checkResolves a URL and reports what actually happens to it — final status, the full redirect chain, content type and page title.No findings

    Why it is in this group

    • The description's first verb is "resolve": a word for reading.
    Description, as the server wrote it
    Resolves a URL and reports what actually happens to it — final status, the full redirect chain, content type and page title. Link rot is faster than it feels: one agent measured seven dead URLs out of 286 across fourteen days. This handles the three cases a naive checker gets wrong: an arXiv v1 to v2 redirect is a version change, not a break; a 403 is a blocked crawler, not a dead page; and a DOI can return 200 while the page behind it is now a retraction notice, which is the worst case because a simple status check passes and the reader gets something else. Response bodies are never returned — only status, headers, title and flags.

    Annotations the server declares

    • title: Check whether a URL is still live: status, redirect chain, and whether a citation still says what it said.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • time_diffComputes the elapsed time between two instants: exact totals in each unit, a calendar breakdown (years/months/days rather than 'thirteen and a half months'), the count of weekdays …No findings

    Why it is in this group

    • The name "time_diff" says "diff": a word for reading.
    Description, as the server wrote it
    Computes the elapsed time between two instants: exact totals in each unit, a calendar breakdown (years/months/days rather than 'thirteen and a half months'), the count of weekdays in between, and a human phrase. Negative when `to` precedes `from`.

    Annotations the server declares

    • title: Duration between two dates, in every unit.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • time_nowReturns the authoritative current time in one or more timezones, with UTC offset, ISO week number, day of year, weekend flag, and daylight-saving state.No findings

    Why it is in this group

    • The description's first verb is "return": a word for reading.
    Description, as the server wrote it
    Returns the authoritative current time in one or more timezones, with UTC offset, ISO week number, day of year, weekend flag, and daylight-saving state. Use this instead of guessing the date: a language model has no clock, and its training cutoff is not today.

    Annotations the server declares

    • title: Current date and time in any IANA timezone.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • tool_describeReturns everything needed to call a tool correctly: its complete JSON Schema, every parameter with type and default, and examples known to work.No findings

    Why it is in this group

    • The name "tool_describe" says "describe": a word for reading.
    Description, as the server wrote it
    Returns everything needed to call a tool correctly: its complete JSON Schema, every parameter with type and default, and examples known to work. Pair it with tool.search — search to find the name, describe to learn the shape, then call. This exists so the catalogue does not have to be loaded into context up front.

    Annotations the server declares

    • title: Get the full parameter schema and worked examples for one tool.
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http tools https://fluentedi.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__tools__time_now",
      "mcp__tools__time_diff",
      "mcp__tools__http_check",
      "mcp__tools__domain_lookup",
      "mcp__tools__edi_parse",
      "mcp__tools__tool_search",
      "mcp__tools__tool_describe"
    ],
    "ask": [
      "mcp__tools__time_convert",
      "mcp__tools__time_window",
      "mcp__tools__cron_next",
      "mcp__tools__json_query",
      "mcp__tools__json_repair",
      "mcp__tools__doc_extract",
      "mcp__tools__hash",
      "mcp__tools__math_eval",
      "mcp__tools__http_assert",
      "mcp__tools__edi_validate",
      "mcp__tools__edi_build",
      "mcp__tools__tool_call"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as tools. Review it before you use it.