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Compare MCP servers

Compare scores, permissions, risks, and fit in one decision-focused table.

DimensionPostman MCP ServerConnect AI agents directly to the Postman API.MartinLoop MCP ServerAn independent control layer that gives AI coding agents budgets, brakes, and receipts
FMRS55 / 100 · C79 / 100 · B
Reliability9 / 2012 / 20
Security and permissions9 / 2018 / 20
Maintenance11 / 2016 / 20
Documentation13 / 2018 / 20
Setup experience13 / 2015 / 20
Best for
  • Development teams managing API assets in Postman
  • Users who need collection, specification, and environment context in coding assistants
  • Developers who need generated API client code
  • Engineering teams scaling AI coding agents while controlling spend
  • Platform teams that need auditable, rollback-aware agent execution records
  • Organizations using multiple agents (Claude, Codex, Gemini) under one governed flow
Not for
  • Users who need a remote server to access APIs on their local workstation
  • Users who do not use Postman workspaces, collections, specifications, or environments
  • Deployments unable to provide OAuth authorization or a valid Postman API key
  • Developers who just want a simple code-completion helper without run governance
  • Teams unwilling to accept local JSONL run records with HMAC signing
  • Environments without a supported adapter (Claude/Codex/Gemini CLIs, direct provider, or verifier-only)
Required permissions
  • The remote OAuth flow requires OAuth authorization
  • The EU remote server and local server require a valid Postman API key
  • The local process receives the API key through the POSTMAN_API_KEY environment variable
  • Read/write access to the configured repo root (writable scope restrictable via --allow-path/--deny-path)
  • Ability to invoke the chosen agent CLI (Claude/Codex/Gemini, etc.) and its underlying model account
  • Local disk writes for run records, receipts, and share outputs (share/run-receipt., etc.)
  • Execution of user-configured verifier commands (e.g. npm test)
Risks and side effects
  • The server can perform management operations on collections, workspaces, and environments, which may modify Postman resources
  • API keys and Authorization Bearer credentials are sensitive authentication data and should not be exposed
  • The remote server cannot access APIs on the user's workstation
  • Verifier commands are executed; poorly chosen verifier commands carry security risk despite preflight policy checks
  • Cost and token figures may be estimates (labeled with provenance) and should not be treated as settled accounting
  • Receipt integrity must be verified before use as trustworthy evidence; missing rollback evidence is flagged as EVIDENCE_BOUNDARY
  • Policy defaults come from martin.config.yaml and can be overridden by CLI flags; misconfiguration can loosen safety boundaries
Supported clientsClaude Code, Claude Desktop, Cursor, VS Code, Codex, Antigravity CLI, GitHub Copilot CLI, Kiro, Gemini CLIClaude Code, Codex, Gemini CLI, Cursor, VS Code, GitHub Copilot, Continue
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