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@postman/postman-mcp-server

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Postman MCP Server — connect AI agents (Claude Code, Cursor, VS Code Copilot, Gemini CLI) to your Postman collections, specifications, and environments via Model Context Protocol (MCP)

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import { z } from 'zod'; import { ContentType } from '../clients/postman.js'; import { ErrorCode } from '@modelcontextprotocol/sdk/types.js'; import { asMcpError, McpError } from './utils/toolHelpers.js'; export const method = 'updateRuleset'; export const title = 'Update a ruleset'; export const description = "Updates a custom ruleset's name, description, or content. Only the fields you send\nchange, but \\`content\\` replaces the entire ruleset rather than merging rules, so read\nthe current content with getRuleset (\\`include=content\\`) and send the full edited\ndocument. Changes take effect for every governance group the ruleset is assigned to.\nPostman-managed rulesets (\\`type: system\\`) can't be updated and return 403.\n"; export const parameters = z.object({ rulesetId: z.string().describe("The ruleset's ID."), name: z .string() .regex(new RegExp('^[a-zA-Z0-9_.-]+$')) .max(255) .describe("The ruleset's name.") .optional(), description: z.string().max(1000).describe("The ruleset's description.").optional(), content: z .string() .describe("The ruleset's content, up to a maximum of 500 KB (UTF-8).") .optional(), }); export const annotations = { title: 'Update a ruleset', readOnlyHint: false, openWorldHint: true, destructiveHint: false, idempotentHint: true, }; export async function handler(args, extra) { try { if ([args['name'], args['description'], args['content']].filter((value) => value !== undefined) .length < 1) { throw new McpError(ErrorCode.InvalidParams, 'Request body must include at least 1 property.'); } const endpoint = `/rulesets/${encodeURIComponent(String(args.rulesetId))}`; const query = new URLSearchParams(); const url = query.toString() ? `${endpoint}?${query.toString()}` : endpoint; const bodyPayload = {}; if (args.name !== undefined) bodyPayload.name = args.name; if (args.description !== undefined) bodyPayload.description = args.description; if (args.content !== undefined) bodyPayload.content = args.content; const options = { body: JSON.stringify(bodyPayload), contentType: ContentType.JsonMergePatch, headers: extra.headers, }; const result = await extra.client.patch(url, options); return { content: [ { type: 'text', text: `${typeof result === 'string' ? result : JSON.stringify(result, null, 2)}`, }, ], }; } catch (e) { if (e instanceof McpError) { throw e; } throw asMcpError(e); } }