COBOL Bridge

AI-powered COBOL mainframe modernization platform with 11 MCP tools, 3 resources, and 3 prompts.

CommunityOnlineNo sign-inGlobalFreeCan modify data

What it can do

  • Cobol.Transform.Records: Parse COBOL copybooks into structured JSON with field types, sizes, and hierarchy. Extracts PIC clauses, REDEFINES, OCCURS, and 88-level conditions.
  • Cobol.Analyze.Transactions: Analyze CICS transaction programs for API bridge compatibility. Identifies EXEC CICS commands, BMS maps, COMMAREA structures, and modernization complexity.
  • Cobol.Analyze.Jobs: Scan JCL job streams to extract step dependencies, dataset usage, program calls, and scheduling metadata for batch modernization planning.

What data it sees

Do you need an account

No: the server works without sign-in

AI-powered COBOL mainframe modernization platform with 11 MCP tools, 3 resources, and 3 prompts. Parse copybooks, assess CICS integrations, scan JCL batch jobs, map VSAM files, translate EBCDIC, bridge ISO 20022 payments, run post-quantum cryptography assessments, fingerprint regulatory compliance (SOC 2, GDPR, HIPAA), discover COBOL codebases, generate REST APIs from COBOL, and automate test suites. Includes migration guides, API references, and modernization assessment prompts for enterprise mainframe-to-cloud transitions.

How to connect

How to connect COBOL Bridge to Claude

The server address to paste into Claude settings:

https://cobol-bridge.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect COBOL Bridge to ChatGPT

The server address to paste into ChatGPT settings:

https://cobol-bridge.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect COBOL Bridge to Cursor

The server address to paste into Cursor settings:

https://cobol-bridge.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (11)

Raw names from tools/list. Only developers need these.

cobol.transform.recordsParse COBOL copybooks into structured JSON with field types, sizes, and hierarchy. Extracts PIC clauses, REDEFINES, OCCURS, and 88-level conditions.
cobol.analyze.transactionsAnalyze CICS transaction programs for API bridge compatibility. Identifies EXEC CICS commands, BMS maps, COMMAREA structures, and modernization complexity.
cobol.analyze.jobsScan JCL job streams to extract step dependencies, dataset usage, program calls, and scheduling metadata for batch modernization planning.
cobol.discover.copybooksMap VSAM file structures (KSDS, ESDS, RRDS) to modern database schemas. Generates SQL DDL, index recommendations, and migration scripts.
cobol.transform.encodingTranslate EBCDIC-encoded data to ASCII/UTF-8 with support for packed decimal (COMP-3), binary (COMP), and zoned decimal conversions.
bridge.output.paymentsTransform legacy payment messages from MT (SWIFT) to MX (ISO 20022) format. Generates pacs, camt, and pain message types with compliance validation and migration tracking.
bridge.validate.encryptionAssess cryptographic posture of COBOL systems for post-quantum readiness. Inventories crypto usage, maps to NIST-approved PQC algorithms (CRYSTALS-Kyber, CRYSTALS-Dilithium, SPHINCS+), and generates migration roadmaps.
bridge.validate.complianceMap COBOL systems to 76+ global regulations including DORA, GDPR, Basel III, SOX, PCI-DSS, HIPAA, and MiFID II. Performs gap analysis and generates compliance evidence documentation.
cobol.discover.programsAI-powered COBOL codebase discovery and cataloging. Performs dependency mapping, complexity analysis (cyclomatic, Halstead), dead code detection, and generates comprehensive modernization inventory.
bridge.output.interfaceGenerate REST, GraphQL, and gRPC API definitions from COBOL copybooks and program interfaces. Produces OpenAPI 3.0 specs, GraphQL schemas, and Protocol Buffer definitions.
bridge.output.testsCapture COBOL program behavior as test baselines and detect regressions with intelligent diffing. Generates test cases from production data patterns, validates I/O transformations, and creates regression test suites.