Chaprola MCP server

Read from the package source without running it. The installed server may list more.

• chaprola_alter

  Modify a data file's schema: widen/narrow/rename fields, add new fields, drop fields. Transforms existing data to match the new schema.

• chaprola_baa_status

  Check whether the authenticated user has signed the BAA

• chaprola_baa_text

  Get the current Business Associate Agreement text and version. Present to human for review before signing

• chaprola_check_username

  Check if a username is available before registering

• chaprola_compile

  Compile Chaprola source (.CS) to bytecode (.PR). READ chaprola://cookbook BEFORE writing source. Key syntax: no PROGRAM keyword (start with commands), no commas, MOVE+PRINT 0 buffer model (not PRINT field), SEEK for primary records, OPEN/READ/WRITE/CLOSE for secondary files, LET supports one operation (no parentheses), field addressing via P.field/S.field requires primary_format/secondary_format p

• chaprola_consolidate

  Merge a .MRG file into its parent .DA, producing a clean sorted data file. Deletes .MRG and .IGN after success. Aborts if .MRG was modified during the operation.

• chaprola_delete_accountwrite action

  Delete an account and all associated data. Requires passcode confirmation

• chaprola_delete_recordwrite action

  Delete a single record matched by a where clause. Marks the record as ignored (.IGN). Physically removed on consolidation.

• chaprola_download

  Get a presigned S3 URL to download any file you own (1-hour expiry)

• chaprola_email_deletewrite action

  Delete a specific email from your mailbox

• chaprola_email_inboxwrite action

  List emails in the authenticated user's mailbox

• chaprola_email_readwrite action

  Read a specific email by message_id

• chaprola_email_sendwrite action

  Send an email from your @chaprola.org address. Subject to content moderation

• chaprola_export

  Export Chaprola .DA + .F files back to JSON

• chaprola_export_reportwrite action

  Run a .PR program and save output as a persistent .R file in S3

• chaprola_fetch

  Fetch any URL and return clean content. HTML pages converted to markdown. SSRF-protected. Rate limit: 20/day per user

• chaprola_format

  Inspect a data file's schema — returns field names, positions, lengths, types, and PHI flags

• chaprola_hello

  Health check — verify the Chaprola API is running

• chaprola_import

  Import JSON data into Chaprola format files (.F + .DA). Sign BAA first if handling PHI

• chaprola_import_download

  Import data directly from a public URL (CSV, TSV, JSON, NDJSON, Parquet, Excel). Optional AI-powered schema inference

• chaprola_import_process

  Process a file previously uploaded to S3 via presigned URL. Generates .F + .DA files

• chaprola_import_url

  Get a presigned S3 upload URL for large files (bypasses 6MB API Gateway limit)

• chaprola_index

  Build an index file (.IDX) for fast lookups on a field

• chaprola_insert_recordwrite action

  Insert a new record into a data file's merge file (.MRG). The record appears at the end of the file until consolidation.

• chaprola_list

  List files in a project with optional wildcard pattern

• chaprola_login

  Login and get a new API key. WARNING: invalidates the previous API key

• chaprola_merge

  Merge two sorted data files into one. Both must share the same format (.F)

• chaprola_optimizewrite action

  Run HULDRA nonlinear optimization using a compiled .PR as the objective evaluator

• chaprola_optimize_status

  Check status of an async optimization job

• chaprola_publishwrite action

  Publish a compiled program for public access via /report

• chaprola_query

  SQL-free data query with WHERE, SELECT, aggregation, ORDER BY, JOIN, pivot, and Mercury scoring

• chaprola_register

  Register a new Chaprola account. Returns an API key — save it immediately

• chaprola_reportwrite action

  Run a published program and return output. No auth required — program must be published first via /publish

• chaprola_report_params

  Get the parameter schema for a published report. Returns the .PF file as JSON — field names, types, and widths. Use this to discover what params a report accepts before calling chaprola_report.

• chaprola_runwrite action

  Execute a compiled .PR program. Use async:true for large datasets (>100K records)

• chaprola_run_eachwrite action

  Run a compiled .PR program against every record in a data file. Like CHAPRPG from the original SCIOS. Use this for scoring, bulk updates, conditional logic across records.

• chaprola_run_statuswrite action

  Check status of an async job. Returns full output when done

• chaprola_schedulewrite action

  Create a scheduled job that runs a Chaprola endpoint on a recurring cron. Max 10 schedules/user, 15-min minimum interval

• chaprola_schedule_deletewrite action

  Delete a scheduled job by name

• chaprola_schedule_list

  List all scheduled jobs for the authenticated user with run history and next execution time

• chaprola_search

  Search the web via Brave Search API. Returns titles, URLs, and snippets. Optional AI-grounded summary. Rate limit: 10/day per user

• chaprola_sign_baa

  Sign the BAA. STOP: You MUST call chaprola_baa_text first, show the FULL text to the human, and get their EXPLICIT typed approval before calling this. Never sign automatically. Only needed for PHI — non-PHI data works without a BAA.

• chaprola_sort

  Sort a data file by one or more fields. Modifies the file in place

• chaprola_unpublishwrite action

  Remove public access from a published program

• chaprola_update_recordwrite action

  Update fields in a single record matched by a where clause. If no sort-key changes, updates in place; otherwise marks old record ignored and appends to merge file.

• Code scan3 source files scanned25/25
• –Live reliabilityno gateway calls yet and no remote to proben/a
• –Tool poisoningtools not inspected (local package is not executed); not countedn/a
• Auth qualitystatic API keys via environment variables6/15
• Maintenancelast push 184 days ago4/15
• Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Chaprola: common questions

Is Chaprola MCP server safe?

With care: it is graded C, so read the findings first (66/100). Read the Chaprola safety report

How do I install Chaprola?

It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.

Does Chaprola need an API key?

Yes. The registry entry asks for CHAPROLA_API_KEY.

Is Chaprola maintained?

The last commit was 200 days ago (2026-03-27). The latest release is v1.4.3.

What can I use instead of Chaprola?

Servers from other publishers that do the same job: Val Town MCP server, Email MCP server and Email MCP server. Compare all Chaprola alternatives.