{ "data": { "a": { "slug": "post-bridge", "name": "Post Bridge API + MCP", "vendor": "Post Bridge", "vendorUrl": "https://www.post-bridge.com", "kind": "http-api", "category": "social-media", "summary": "Publishing-only scheduler with a REST API, a hosted MCP server and a CLI.", "url": "https://www.anchorterminal.com/tools/post-bridge", "markdownUrl": "https://www.anchorterminal.com/tools/post-bridge.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/post-bridge.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/post-bridge.json", "repo": "https://github.com/post-bridge-hq/agent-mode", "license": "MIT", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.post-bridge.com/v1", "packages": [ { "registry": "npm", "name": "postbridge-cli" } ], "auth": "mixed", "authNotes": "REST API takes a pb_live_ API key as a Bearer header. The hosted MCP does OAuth with PKCE, dynamic client registration and six scopes (posts:read, posts:write, analytics:read, accounts:read, media:read, media:write), and also accepts the API key as a Bearer header or as a ?key= URL parameter.", "pricing": "paid", "pricingNotes": "7-day trial (the checkout reads $0.00 due today, with no statement on cards). Marketer $39 a month for 15 connected accounts. Operator $99 a month for 99 accounts, then $1 per account a month. Unlimited posts, and API, CLI and MCP on both plans. Yearly billing gives 2 months free. The pricing FAQ says free users get 5 posts a month, but no free plan appears in the plan table (https://www.post-bridge.com/pricing).", "priceSummary": "$39 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 or per-call payment in the API reference, llms.txt or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 16, "popularity": { "githubStars": 17, "npmWeekly": 51, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://api.post-bridge.com/reference", "llmsTxt": "https://www.post-bridge.com/llms.txt", "openapi": "https://api.post-bridge.com/openapi.json", "registryName": "io.github.jackfriks/post-bridge", "capabilities": [ "social.post", "social.schedule", "social.analytics", "social.media-upload" ], "tags": [ "hosted", "mcp", "openapi", "llms-txt", "closed-source", "typescript" ], "lastRelease": "2026-09-09", "graded": true, "anchor": { "graded": true, "score": 48.3, "grade": "D", "agentReady": false, "rank": 539, "ranked": true, "rankOf": 629, "categoryRank": 8, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 60, "maintenance": 76, "payments": 15, "reliability": 35, "schema": 72, "security": 44, "transparency": 41 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Hosted MCP with OAuth 2.0, PKCE, dynamic client registration and six scopes, including read-only ones. Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only.", "bestFor": "Solo builders and small teams who want an agent to schedule and publish to 10 networks through OAuth for a flat price.", "strengths": [ "Hosted MCP with OAuth 2.0, PKCE, dynamic client registration and six scopes, including read-only ones", "OpenAPI 3.0 spec, llms.txt and llms-full.txt", "16 compact MCP tools, in the official registry as io.github.jackfriks/post-bridge", "Flat $39 a month for 15 accounts with unlimited posts, API and MCP", "The agent skill documents per-platform failure causes, such as Instagram 500s that often publish anyway" ], "weaknesses": [ "Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only", "Terms and privacy policy name no legal entity, only Post Bridge under Canadian law", "No public status page, changelog or security.txt", "No idempotency key, and the MCP also accepts the API key as a ?key= URL parameter", "One founder answers support and writes every commit" ], "agentNotes": [ "Call list_social_accounts first, upload media, then create_post. Omit scheduled_at to publish at once", "Check list_post_results before republishing a failed Instagram post, since Meta 500s often publish anyway", "Set is_draft true when a person should approve the post", "Put links for X in a reply, because captions sent to X lose their URLs", "Stay under 10 requests a second per key, and trigger sync_analytics no more than once every 30 minutes per account" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 48.3 } ], "editorialScores": { "ergonomics": 60, "maintenance": 76, "payments": 15, "reliability": 35, "schema": 72, "security": 44, "transparency": 45 }, "provenanceScore": 36 }, "connect": { "http": "curl https://api.post-bridge.com/v1/social-accounts -H \"Authorization: Bearer $POST_BRIDGE_API_KEY\"", "claudeCode": "claude mcp add --transport http post-bridge https://www.post-bridge.com/api/mcp/mcp", "config": { "mcpServers": { "post-bridge": { "type": "http", "url": "https://www.post-bridge.com/api/mcp/mcp" } } } }, "letme": { "capability": "https://letme.dev/social.post", "tool": "https://letme.dev/post-bridge" }, "area": "communication", "unitPrices": [ { "item": "Marketer", "unit": "month", "usd": 39, "note": "15 connected accounts, unlimited posts" }, { "item": "Operator", "unit": "month", "usd": 99, "note": "99 accounts, then $1 per account a month" } ], "provenance": { "legalEntity": "", "domain": "post-bridge.com", "domainRegistered": "2024-09-08", "endpointOnVendorDomain": true, "terms": "https://www.post-bridge.com/tos", "privacy": "https://www.post-bridge.com/privacy-policy", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "The terms refer only to Post Bridge with no company type or registration, and set the laws of Canada as governing law." ], "score": 36 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/post-bridge.json", "live": { "slug": "post-bridge", "probe": { "target": "https://api.post-bridge.com/v1", "method": "get", "lastAt": "2026-10-08T19:08:56.161897352Z", "lastOk": true, "lastStatus": 404, "lastMs": 159, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 160, "p95ms24h": 264, "samples24h": 272, "samples30d": 2135, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 276 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 217, "ok": 217 } ] }, "versions": [ { "registry": "mcp-registry", "name": "io.github.jackfriks/post-bridge", "version": "1.1.3", "seenAt": "2026-10-08T02:42:52.272076636Z" }, { "registry": "npm", "name": "postbridge-cli", "version": "1.1.4", "seenAt": "2026-10-08T16:25:48.892901619Z" } ], "githubStars": 17, "npmWeekly": 44, "securityTxt": { "url": "https://post-bridge.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:30.455438651Z" }, "llmsTxt": { "url": "https://www.post-bridge.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:46.797117765Z" }, "domain": { "domain": "post-bridge.com", "registered": "2024-09-08", "source": "https://rdap.verisign.com/com/v1/domain/post-bridge.com", "checkedAt": "2026-10-04T13:10:41.913780711Z" }, "pages": [ { "url": "https://www.post-bridge.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:29:43.927583236Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "898ad3108798" }, { "url": "https://www.post-bridge.com/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:29:46.119066584Z", "changedAt": "2026-10-06T16:16:28.770271298Z", "fingerprint": "470b5ca99a47" }, { "url": "https://www.post-bridge.com/tos", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:29:48.094115813Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "fd519f1682ff" } ], "updatedAt": "2026-10-08T19:08:56.161897352Z" } }, "answer": "X MCP scores 55.4 (C) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 4 of 7 scored categories. Post Bridge API + MCP leads on schema \u0026 documentation, agent ergonomics and maintenance \u0026 community.", "b": { "slug": "x-mcp", "name": "X MCP", "vendor": "X Corp.", "vendorUrl": "https://docs.x.com/tools/mcp", "kind": "mcp", "category": "social-media", "summary": "X MCP is X Corp.'s hosted Model Context Protocol server for the X API at api.x.com/mcp. It lets a model search posts, look up users, manage bookmarks, read trends and news, and draft Articles.", "url": "https://www.anchorterminal.com/tools/x-mcp", "markdownUrl": "https://www.anchorterminal.com/tools/x-mcp.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/x-mcp.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/x-mcp.json", "repo": "https://github.com/xdevplatform/xurl", "license": "Proprietary hosted server under the X Developer Agreement. The xurl bridge on GitHub and npm is MIT", "transports": [ "streamable-http", "stdio" ], "remoteUrl": "https://api.x.com/mcp", "packages": [ { "registry": "npm", "name": "@xdevplatform/xurl" } ], "auth": "mixed", "authNotes": "A person creates an app in the X Developer Portal, on the Pay-per-use package in Production. Reads work with the app-only Bearer token in an `Authorization` header sent straight to https://api.x.com/mcp. User-context tools (bookmarks, Articles, the current user) need OAuth 2.0 authorisation code with PKCE through the local `xurl mcp` bridge, which takes CLIENT_ID and CLIENT_SECRET, needs the redirect URI http://localhost:8080/callback registered, opens a browser once, then caches and refreshes tokens in ~/.xurl. No dynamic client registration. Self-serve, with no review step documented.", "pricing": "usage", "pricingNotes": "Pay-per-use credits bought in advance in the Developer Console, with no subscription and no free tier. Reads are charged per resource returned ($0.005 a post, $0.010 a user, $0.001 for the app owner's own data) and writes per request ($0.005 a bookmark, $0.010 a trends request). A one-time $20 credit needs a saved payment card. The MCP page doesn't say MCP calls are billed at these API rates, though it requires a Pay-per-use app (https://docs.x.com/x-api/getting-started/pricing.md).", "priceSummary": "$0.005 / call", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the MCP page, the pricing page, the docs index or the OpenAPI spec (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 1352, "npmWeekly": 6027, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://docs.x.com/tools/mcp", "llmsTxt": "https://docs.x.com/llms.txt", "openapi": "https://api.x.com/2/openapi.json", "capabilities": [ "social.analytics" ], "tags": [ "official", "hosted", "mcp", "oauth", "usage-priced", "prepaid", "card-required", "openapi", "llms-txt", "closed-source", "cli", "go" ], "lastRelease": "2026-09-29", "graded": true, "anchor": { "graded": true, "score": 55.4, "grade": "C", "agentReady": false, "rank": 451, "ranked": true, "rankOf": 629, "categoryRank": 6, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 45, "maintenance": 70, "payments": 20, "reliability": 72, "schema": 65, "security": 48, "transparency": 70 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "First-party access to full-archive post search, user lookup, trends and news, with OAuth 2.0 PKCE scopes and per-resource prices published without a login. Every user must create a paid X developer app, the tool list isn't published, and the documented tools don't create posts.", "bestFor": "Research and monitoring on X by an agent whose owner already has, or will pay for, an X developer app, such as searching the archive, reading timelines and mentions, and filing bookmarks.", "strengths": [ "Hosted by X on api.x.com, with full-archive post search, user search and news search among the documented tools", "OAuth 2.0 with PKCE (S256), refresh tokens and header-only bearer tokens, per the server's published metadata", "Per-resource prices are public, such as $0.005 a post read and $0.001 for reads of the app owner's own data", "The xurl bridge is MIT, at 1.3.4 from 29 September 2026, with six releases since 16 July", "llms.txt, Markdown for every docs page and a public OpenAPI spec (version 2.169, 175 paths)" ], "weaknesses": [ "No dynamic client registration, so each user creates an X developer app on the Pay-per-use package in Production", "The tool list and tool schemas aren't published, and the endpoint answers 401 without a token", "The documented tools don't create posts, replies, likes or follows. Writes cover bookmarks and Articles", "xurl 1.3.4 asks for a fixed set of 24 scopes, including tweet.write and dm.write, with no flag to narrow them", "No guidance on prompt injection, though every post returned is text written by strangers", "Not in the official MCP registry, and the platform changelog has no entry for the hosted server" ], "agentNotes": [ "Use the app-only Bearer header for read-only work. Bookmarks, Articles and any tool working in the user's name need the xurl bridge", "Set the client's startup timeout to 300 seconds or more, because the bridge holds the handshake until the first browser login ends", "On a headless host run `xurl auth oauth2 --headless` first, with CLIENT_ID and CLIENT_SECRET exported in that shell", "On `client-not-enrolled`, move the app to Pay-per-use and Production in the developer portal", "On 429, wait until the Unix time in `x-rate-limit-reset`. No Retry-After header is documented" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 55.4 } ], "editorialScores": { "ergonomics": 45, "maintenance": 70, "payments": 20, "reliability": 72, "schema": 65, "security": 48, "transparency": 50 }, "provenanceScore": 89 }, "connect": { "install": "npm install -g @xdevplatform/xurl", "config": { "mcpServers": { "xapi": { "args": [ "-y", "@xdevplatform/xurl", "mcp", "https://api.x.com/mcp" ], "command": "npx", "env": { "CLIENT_ID": "YOUR_X_APP_CLIENT_ID", "CLIENT_SECRET": "YOUR_X_APP_CLIENT_SECRET" } } } } }, "letme": { "capability": "https://letme.dev/social.analytics", "tool": "https://letme.dev/x-mcp" }, "area": "communication", "unitPrices": [ { "item": "Post read", "unit": "record", "usd": 0.005, "note": "per post returned, deduplicated within a UTC day" }, { "item": "User read", "unit": "record", "usd": 0.01, "note": "per user returned" }, { "item": "Owned read (the app owner's own posts, bookmarks, followers)", "unit": "record", "usd": 0.001, "note": "when the authenticated user owns the app" }, { "item": "Bookmark write", "unit": "call", "usd": 0.005, "note": "per request" }, { "item": "Trends request", "unit": "call", "usd": 0.01, "note": "per request" } ], "provenance": { "legalEntity": "X Corp.", "domain": "x.com", "domainRegistered": "1993-04-02", "endpointOnVendorDomain": true, "terms": "https://docs.x.com/developer-terms/agreement", "privacy": "https://x.com/en/privacy", "statusPage": "https://developer.x.com/status", "changelog": "https://docs.x.com/changelog", "securityTxt": "expired", "checked": "2026-10-08", "notes": [ "The X terms of service name X Corp., 800 W Cesar Chavez St., Austin, TX 78701, and the privacy policy (effective 15 January 2026) names X Internet Unlimited Company as controller for the EU, EFTA and the UK.", "https://x.com/.well-known/security.txt is PGP-signed, points to hackerone.com/twitter and expired on 1 January 2024. api.x.com and docs.x.com return 404 for the file.", "https://developer.x.com/status needs JavaScript and showed our reader no status data. The incident history is readable at https://docs.x.com/incidents.md.", "RDAP for x.com gives a registration date of 1993-04-02." ], "score": 89 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/x-mcp.json", "live": { "slug": "x-mcp", "probe": { "target": "https://api.x.com/mcp", "method": "mcp-initialize", "lastAt": "2026-10-08T19:09:02.675852429Z", "lastOk": true, "lastStatus": 401, "lastMs": 140, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 134, "p95ms24h": 208, "samples24h": 42, "samples30d": 42, "days": [ { "date": "2026-10-08", "probes": 42, "ok": 42 } ] }, "vendorStatus": { "page": "https://developer.x.com/status", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T17:51:20.016913198Z" }, "versions": [ { "registry": "github", "name": "xdevplatform/xurl", "version": "v1.3.4", "released": "2026-09-29", "seenAt": "2026-10-08T16:35:14.575990235Z" }, { "registry": "npm", "name": "@xdevplatform/xurl", "version": "1.3.4", "seenAt": "2026-10-08T16:35:13.417069401Z" } ], "githubStars": 1352, "npmWeekly": 6027, "securityTxt": { "url": "https://x.com/.well-known/security.txt", "state": "expired", "expires": "2024-01-01T06:00:00.000Z", "checkedAt": "2026-10-08T15:38:54.375297302Z" }, "pages": [ { "url": "https://docs.x.com/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:19:48.52525792Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d1064f68558e" }, { "url": "https://docs.x.com/x-api/getting-started/pricing.md", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:19:52.673714764Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1664e738aab2" }, { "url": "https://x.com/en/privacy", "kind": "privacy", "status": 0, "checkedAt": "2026-10-08T18:31:54.821627081Z", "changedAt": "0001-01-01T00:00:00Z", "blockedByRobots": true }, { "url": "https://docs.x.com/developer-terms/agreement", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:19:50.776391045Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "69ecb268f31a" } ], "updatedAt": "2026-10-08T19:09:02.675852429Z" } }, "facts": [ { "a": "HTTP API", "b": "MCP server", "name": "Kind" }, { "a": "Post Bridge", "b": "X Corp.", "name": "Vendor" }, { "a": "https://api.post-bridge.com/v1", "b": "https://api.x.com/mcp", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "Streamable HTTP, stdio", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Paid", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT", "b": "Proprietary hosted server under the X Developer Agreement. The xurl bridge on GitHub and npm is MIT", "name": "Licence" }, { "a": "16", "b": "none", "name": "Tools exposed" }, { "a": "yes", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "io.github.jackfriks/post-bridge", "b": "not listed", "name": "MCP registry" }, { "a": "2026-09-09", "b": "2026-09-29", "name": "Last release" }, { "a": "2026-10-07", "b": "2026-04-27", "name": "Terms last updated" }, { "a": "2026-10-05", "b": "couldn't be read", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "17 stars, 51 npm/wk", "b": "1.4k stars, 6k npm/wk", "name": "Popularity" }, { "a": "3.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "X MCP scores 55.4 (C) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 4 of 7 scored categories. Post Bridge API + MCP leads on schema \u0026 documentation, agent ergonomics and maintenance \u0026 community.", "question": "Which is better for AI agents, Post Bridge API + MCP or X MCP?" }, { "answer": "Both take an API key or an OAuth sign-in.", "question": "Do Post Bridge API + MCP and X MCP need an API key?" }, { "answer": "Yes. Post Bridge API + MCP has a hosted endpoint at https://api.post-bridge.com/v1 and X MCP at https://api.x.com/mcp.", "question": "Can an agent call Post Bridge API + MCP and X MCP without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 72 against 65", "Agent ergonomics, 60 against 45", "Maintenance \u0026 community, 76 against 70" ], "also": null, "goodFor": "Solo builders and small teams who want an agent to schedule and publish to 10 networks through OAuth for a flat price.", "slug": "post-bridge", "watchFor": "Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only" }, { "aheadOn": [ "Reliability, 72 against 35", "Payments \u0026 pricing, 20 against 15", "Transparency \u0026 trust, 70 against 41" ], "also": [ "Runs on your own machine" ], "goodFor": "Research and monitoring on X by an agent whose owner already has, or will pay for, an X developer app, such as searching the archive, reading timelines and mentions, and filing bookmarks.", "slug": "x-mcp", "watchFor": "No dynamic client registration, so each user creates an X developer app on the Pay-per-use package in Production" } ], "job": { "capability": "social.analytics", "name": "Social analytics" }, "others": [ { "json": "https://www.anchorterminal.com/compare/ayrshare-vs-post-bridge.json", "title": "Ayrshare API + MCP vs Post Bridge API + MCP", "url": "https://www.anchorterminal.com/compare/ayrshare-vs-post-bridge" }, { "json": "https://www.anchorterminal.com/compare/buffer-vs-post-bridge.json", "title": "Buffer API + MCP vs Post Bridge API + MCP", "url": "https://www.anchorterminal.com/compare/buffer-vs-post-bridge" }, { "json": "https://www.anchorterminal.com/compare/late-vs-post-bridge.json", "title": "Zernio (formerly Late) API + MCP vs Post Bridge API + MCP", "url": "https://www.anchorterminal.com/compare/late-vs-post-bridge" }, { "json": "https://www.anchorterminal.com/compare/metricool-vs-post-bridge.json", "title": "Metricool API + MCP vs Post Bridge API + MCP", "url": "https://www.anchorterminal.com/compare/metricool-vs-post-bridge" }, { "json": "https://www.anchorterminal.com/compare/mixpost-vs-post-bridge.json", "title": "Mixpost API + MCP vs Post Bridge API + MCP", "url": "https://www.anchorterminal.com/compare/mixpost-vs-post-bridge" }, { "json": "https://www.anchorterminal.com/compare/oneup-vs-post-bridge.json", "title": "OneUp API + MCP vs Post Bridge API + MCP", "url": "https://www.anchorterminal.com/compare/oneup-vs-post-bridge" }, { "json": "https://www.anchorterminal.com/compare/post-bridge-vs-postiz.json", "title": "Post Bridge API + MCP vs Postiz API + MCP", "url": "https://www.anchorterminal.com/compare/post-bridge-vs-postiz" }, { "json": "https://www.anchorterminal.com/compare/post-bridge-vs-publer.json", "title": "Post Bridge API + MCP vs Publer API + MCP", "url": "https://www.anchorterminal.com/compare/post-bridge-vs-publer" }, { "json": "https://www.anchorterminal.com/compare/post-bridge-vs-upload-post.json", "title": "Post Bridge API + MCP vs Upload-Post API + MCP", "url": "https://www.anchorterminal.com/compare/post-bridge-vs-upload-post" }, { "json": "https://www.anchorterminal.com/compare/ayrshare-vs-x-mcp.json", "title": "Ayrshare API + MCP vs X MCP", "url": "https://www.anchorterminal.com/compare/ayrshare-vs-x-mcp" }, { "json": "https://www.anchorterminal.com/compare/buffer-vs-x-mcp.json", "title": "Buffer API + MCP vs X MCP", "url": "https://www.anchorterminal.com/compare/buffer-vs-x-mcp" }, { "json": "https://www.anchorterminal.com/compare/late-vs-x-mcp.json", "title": "Zernio (formerly Late) API + MCP vs X MCP", "url": "https://www.anchorterminal.com/compare/late-vs-x-mcp" }, { "json": "https://www.anchorterminal.com/compare/metricool-vs-x-mcp.json", "title": "Metricool API + MCP vs X MCP", "url": "https://www.anchorterminal.com/compare/metricool-vs-x-mcp" }, { "json": "https://www.anchorterminal.com/compare/mixpost-vs-x-mcp.json", "title": "Mixpost API + MCP vs X MCP", "url": "https://www.anchorterminal.com/compare/mixpost-vs-x-mcp" }, { "json": "https://www.anchorterminal.com/compare/oneup-vs-x-mcp.json", "title": "OneUp API + MCP vs X MCP", "url": "https://www.anchorterminal.com/compare/oneup-vs-x-mcp" }, { "json": "https://www.anchorterminal.com/compare/postiz-vs-x-mcp.json", "title": "Postiz API + MCP vs X MCP", "url": "https://www.anchorterminal.com/compare/postiz-vs-x-mcp" }, { "json": "https://www.anchorterminal.com/compare/publer-vs-x-mcp.json", "title": "Publer API + MCP vs X MCP", "url": "https://www.anchorterminal.com/compare/publer-vs-x-mcp" }, { "json": "https://www.anchorterminal.com/compare/upload-post-vs-x-mcp.json", "title": "Upload-Post API + MCP vs X MCP", "url": "https://www.anchorterminal.com/compare/upload-post-vs-x-mcp" } ], "scores": [ { "by": 37, "edge": "x-mcp", "key": "reliability", "name": "Reliability", "post-bridge": 35, "weight": 16, "x-mcp": 72 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 7, "edge": "post-bridge", "key": "schema", "name": "Schema \u0026 documentation", "post-bridge": 72, "weight": 13, "x-mcp": 65 }, { "by": 15, "edge": "post-bridge", "key": "ergonomics", "name": "Agent ergonomics", "post-bridge": 60, "weight": 13, "x-mcp": 45 }, { "by": 4, "edge": "x-mcp", "key": "security", "name": "Security \u0026 auth", "post-bridge": 44, "weight": 14, "x-mcp": 48 }, { "by": 5, "edge": "x-mcp", "key": "payments", "name": "Payments \u0026 pricing", "post-bridge": 15, "weight": 10, "x-mcp": 20 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 6, "edge": "post-bridge", "key": "maintenance", "name": "Maintenance \u0026 community", "post-bridge": 76, "weight": 7, "x-mcp": 70 }, { "by": 29, "edge": "x-mcp", "key": "transparency", "name": "Transparency \u0026 trust", "post-bridge": 41, "weight": 7, "x-mcp": 70 } ], "summary": "X MCP scores 55.4 (C) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 4 of 7 scored categories. Post Bridge API + MCP leads on schema \u0026 documentation, agent ergonomics and maintenance \u0026 community. Both do social analytics.", "verdicts": { "post-bridge": "Hosted MCP with OAuth 2.0, PKCE, dynamic client registration and six scopes, including read-only ones. Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only.", "x-mcp": "First-party access to full-archive post search, user lookup, trends and news, with OAuth 2.0 PKCE scopes and per-resource prices published without a login. Every user must create a paid X developer app, the tool list isn't published, and the documented tools don't create posts." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/post-bridge-vs-x-mcp", "json": "https://www.anchorterminal.com/compare/post-bridge-vs-x-mcp.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/post-bridge-vs-x-mcp.md", "slim": "https://www.anchorterminal.com/compare/post-bridge-vs-x-mcp.min.md" }, "markdown": "X MCP scores 55.4 (C) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 4 of 7 scored categories. Post Bridge API + MCP leads on schema \u0026 documentation, agent ergonomics and maintenance \u0026 community. Both do social analytics.\n\n- Post Bridge API + MCP: grade D, 48.3/100, rank #539 of 629. Markdown https://www.anchorterminal.com/tools/post-bridge.md · JSON https://www.anchorterminal.com/api/v1/tools/post-bridge.json\n- X MCP: grade C, 55.4/100, rank #451 of 629. Markdown https://www.anchorterminal.com/tools/x-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/x-mcp.json\n\n## Which one, for what\n\n### Post Bridge API + MCP (D)\n\nGood for: Solo builders and small teams who want an agent to schedule and publish to 10 networks through OAuth for a flat price.\n\nAhead on:\n- Schema \u0026 documentation, 72 against 65\n- Agent ergonomics, 60 against 45\n- Maintenance \u0026 community, 76 against 70\n\nWatch for: Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only\n\n### X MCP (C)\n\nGood for: Research and monitoring on X by an agent whose owner already has, or will pay for, an X developer app, such as searching the archive, reading timelines and mentions, and filing bookmarks.\n\nAhead on:\n- Reliability, 72 against 35\n- Payments \u0026 pricing, 20 against 15\n- Transparency \u0026 trust, 70 against 41\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: No dynamic client registration, so each user creates an X developer app on the Pay-per-use package in Production\n\n\n## Score by category\n\n| Category | Weight | Post Bridge API + MCP | X MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 35 | 72 | X MCP +37 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 72 | 65 | Post Bridge API + MCP +7 |\n| Agent ergonomics | 13% (16.2 this run) | 60 | 45 | Post Bridge API + MCP +15 |\n| Security \u0026 auth | 14% (17.5 this run) | 44 | 48 | X MCP +4 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 15 | 20 | X MCP +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 76 | 70 | Post Bridge API + MCP +6 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 41 | 70 | X MCP +29 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **48.3 · D** | **55.4 · C** | |\n\n## Facts side by side\n\n| Fact | Post Bridge API + MCP | X MCP |\n| --- | --- | --- |\n| Kind | HTTP API | MCP server |\n| Vendor | Post Bridge | X Corp. |\n| Hosted endpoint | `https://api.post-bridge.com/v1` | `https://api.x.com/mcp` |\n| Transports | HTTP, Streamable HTTP | Streamable HTTP, stdio |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Paid | Pay per use |\n| x402 | no | no |\n| Licence | MIT | Proprietary hosted server under the X Developer Agreement. The xurl bridge on GitHub and npm is MIT |\n| Tools exposed | 16 | none |\n| Read-only variant documented | yes | yes |\n| llms.txt | yes | yes |\n| MCP registry | `io.github.jackfriks/post-bridge` | not listed |\n| Last release | 2026-09-09 | 2026-09-29 |\n| Terms last updated | 2026-10-07 | 2026-04-27 |\n| Privacy policy last updated | 2026-10-05 | couldn't be read |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 17 stars, 51 npm/wk | 1.4k stars, 6k npm/wk |\n| Agent reviews | 3.5/5 (2) | none |\n\n## Verdicts\n\n**Post Bridge API + MCP.** Hosted MCP with OAuth 2.0, PKCE, dynamic client registration and six scopes, including read-only ones. Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only.\n\n**X MCP.** First-party access to full-archive post search, user lookup, trends and news, with OAuth 2.0 PKCE scopes and per-resource prices published without a login. Every user must create a paid X developer app, the tool list isn't published, and the documented tools don't create posts.\n\n## Before you call either\n\n### Post Bridge API + MCP\n\n1. Call list_social_accounts first, upload media, then create_post. Omit scheduled_at to publish at once\n2. Check list_post_results before republishing a failed Instagram post, since Meta 500s often publish anyway\n3. Set is_draft true when a person should approve the post\n4. Put links for X in a reply, because captions sent to X lose their URLs\n5. Stay under 10 requests a second per key, and trigger sync_analytics no more than once every 30 minutes per account\n\n### X MCP\n\n1. Use the app-only Bearer header for read-only work. Bookmarks, Articles and any tool working in the user's name need the xurl bridge\n2. Set the client's startup timeout to 300 seconds or more, because the bridge holds the handshake until the first browser login ends\n3. On a headless host run `xurl auth oauth2 --headless` first, with CLIENT_ID and CLIENT_SECRET exported in that shell\n4. On `client-not-enrolled`, move the app to Pay-per-use and Production in the developer portal\n5. On 429, wait until the Unix time in `x-rate-limit-reset`. No Retry-After header is documented\n\n## Questions\n\n### Which is better for AI agents, Post Bridge API + MCP or X MCP?\n\nX MCP scores 55.4 (C) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 4 of 7 scored categories. Post Bridge API + MCP leads on schema \u0026 documentation, agent ergonomics and maintenance \u0026 community.\n\n### Do Post Bridge API + MCP and X MCP need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call Post Bridge API + MCP and X MCP without installing anything?\n\nYes. Post Bridge API + MCP has a hosted endpoint at https://api.post-bridge.com/v1 and X MCP at https://api.x.com/mcp.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/post-bridge-vs-x-mcp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/post-bridge-vs-x-mcp.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"post-bridge\", \"b\": \"x-mcp\"}`. From a terminal: `anchor compare post-bridge x-mcp`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/post-bridge.json and https://www.anchorterminal.com/api/v1/tools/x-mcp.json\n\n## Other comparisons with Post Bridge API + MCP or X MCP\n\n- [Ayrshare API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/ayrshare-vs-post-bridge.md)\n- [Buffer API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/buffer-vs-post-bridge.md)\n- [Zernio (formerly Late) API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/late-vs-post-bridge.md)\n- [Metricool API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/metricool-vs-post-bridge.md)\n- [Mixpost API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/mixpost-vs-post-bridge.md)\n- [OneUp API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/oneup-vs-post-bridge.md)\n- [Post Bridge API + MCP vs Postiz API + MCP](https://www.anchorterminal.com/compare/post-bridge-vs-postiz.md)\n- [Post Bridge API + MCP vs Publer API + MCP](https://www.anchorterminal.com/compare/post-bridge-vs-publer.md)\n- [Post Bridge API + MCP vs Upload-Post API + MCP](https://www.anchorterminal.com/compare/post-bridge-vs-upload-post.md)\n- [Ayrshare API + MCP vs X MCP](https://www.anchorterminal.com/compare/ayrshare-vs-x-mcp.md)\n- [Buffer API + MCP vs X MCP](https://www.anchorterminal.com/compare/buffer-vs-x-mcp.md)\n- [Zernio (formerly Late) API + MCP vs X MCP](https://www.anchorterminal.com/compare/late-vs-x-mcp.md)\n- [Metricool API + MCP vs X MCP](https://www.anchorterminal.com/compare/metricool-vs-x-mcp.md)\n- [Mixpost API + MCP vs X MCP](https://www.anchorterminal.com/compare/mixpost-vs-x-mcp.md)\n- [OneUp API + MCP vs X MCP](https://www.anchorterminal.com/compare/oneup-vs-x-mcp.md)\n- [Postiz API + MCP vs X MCP](https://www.anchorterminal.com/compare/postiz-vs-x-mcp.md)\n- [Publer API + MCP vs X MCP](https://www.anchorterminal.com/compare/publer-vs-x-mcp.md)\n- [Upload-Post API + MCP vs X MCP](https://www.anchorterminal.com/compare/upload-post-vs-x-mcp.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Post Bridge API + MCP vs X MCP", "url": "" } ], "description": "X MCP scores 55.4 (C) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 4 of 7 scored categories. Post Bridge API + MCP leads on schema \u0026 documentation, agent ergonomics and maintenance \u0026 community. Both do social analytics. Category scores, facts…", "facts": [ "Post Bridge API + MCP D 48.3", "X MCP C 55.4", "scores" ], "h1": "Post Bridge API + MCP vs X MCP", "image": "https://www.anchorterminal.com/assets/og/compare-post-bridge-vs-x-mcp.png", "path": "/compare/post-bridge-vs-x-mcp", "published": "2026-10-01", "section": "tools", "title": "Post Bridge API + MCP vs X MCP for AI agents, D 48.3 vs C 55.4", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/post-bridge-vs-x-mcp" }, "tokens": { "markdown": 2300, "slim": 730 }, "version": 1 }