{
  "data": {
    "a": {
      "slug": "buffer",
      "name": "Buffer API + MCP",
      "vendor": "Buffer",
      "vendorUrl": "https://buffer.com",
      "kind": "http-api",
      "category": "social-media",
      "summary": "Buffer's GraphQL API, reopened to everyone on 2026-05-27 and free on every plan, with a hosted MCP server (20 tools) and a CLI.",
      "url": "https://www.anchorterminal.com/tools/buffer",
      "markdownUrl": "https://www.anchorterminal.com/tools/buffer.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/buffer.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/buffer.json",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.buffer.com",
      "packages": [
        {
          "registry": "npm",
          "name": "@bufferapp/cli"
        }
      ],
      "auth": "mixed",
      "authNotes": "Personal API key as a Bearer token for your own account (it sees every organisation you belong to, no per-organisation scoping). App Clients acting for other users use OAuth 2.0 authorisation code with PKCE. The hosted MCP takes OAuth in Claude and other clients, or the API key as a Bearer header.",
      "pricing": "freemium",
      "pricingNotes": "API included on every plan. Free $0 (3 channels, 10 scheduled posts a channel, 1 API key, 3,000 requests a month). Essentials $5 a channel a month billed yearly ($60 a year, 3 keys, 7,500 requests). Team $10 a channel a month billed yearly ($120 a year, 5 keys, 15,000 requests). Channels above 10 cost less. 14-day trial on paid plans (https://buffer.com/pricing).",
      "priceSummary": "$5 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 in developer docs, llms-full.txt or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 20,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 687,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://developers.buffer.com",
      "llmsTxt": "https://developers.buffer.com/llms.txt",
      "capabilities": [
        "social.post",
        "social.schedule",
        "social.analytics"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "no-card",
        "mcp",
        "llms-txt",
        "closed-source",
        "typescript"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 62.3,
        "grade": "B",
        "agentReady": false,
        "rank": 220,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 2,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 65,
          "maintenance": 73,
          "payments": 30,
          "reliability": 55,
          "schema": 86,
          "security": 56,
          "transparency": 78
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "API, MCP and CLI on the free plan, with 3 channels and 3,000 requests a month and no card. 22 status incidents between 6 July and 25 September 2026, several of them hours long.",
        "bestFor": "Personal and small-team posting where the free plan and OAuth MCP are enough.",
        "strengths": [
          "API, MCP and CLI on the free plan, with 3 channels and 3,000 requests a month and no card",
          "Hosted MCP with OAuth 2.0, PKCE and 11 scopes, including read-only ones such as posts:read",
          "429 responses carry an exact Retry-After and don't use up quota",
          "Typed GraphQL schema, a schema changelog updated most days and @deprecated annotations with removal dates",
          "Security reporting route with a GPG key and bug rewards"
        ],
        "weaknesses": [
          "22 status incidents between 6 July and 25 September 2026, several of them hours long",
          "Low quotas, 100 requests per 15 minutes and 3,000 to 15,000 a month",
          "No media upload, every file has to sit at a public URL you host",
          "The changelog shows types removed on 2 and 25 September 2026 despite the additive-only promise",
          "No official SDKs, no tool annotations and no idempotency keys"
        ],
        "agentNotes": [
          "Call `{ account { organizations { id } } }` first, then list channels for an organisation before posting",
          "Include `... on MutationError` in every mutation, since errors come back with HTTP 200",
          "On 429, wait Retry-After plus a few seconds of jitter. The 429 itself doesn't cost quota",
          "Pass images and video as public direct URLs, not preview or login-gated links",
          "Use saveToDraft or addToQueue so nothing publishes by accident, because delete_post can't be undone"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 62.3
          }
        ],
        "editorialScores": {
          "ergonomics": 65,
          "maintenance": 73,
          "payments": 30,
          "reliability": 55,
          "schema": 86,
          "security": 56,
          "transparency": 66
        },
        "provenanceScore": 90
      },
      "connect": {
        "http": "curl https://api.buffer.com -H \"Authorization: Bearer $BUFFER_API_KEY\" \\\n  -H \"content-type: application/json\" -d '{\"query\":\"{ account { id organizations { id name } } }\"}'",
        "claudeCode": "claude mcp add --transport http buffer https://mcp.buffer.com/mcp"
      },
      "letme": {
        "capability": "https://letme.dev/social.post",
        "tool": "https://letme.dev/buffer"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Essentials plan",
          "unit": "month",
          "usd": 5,
          "note": "per channel, billed yearly ($60)"
        },
        {
          "item": "Team plan",
          "unit": "month",
          "usd": 10,
          "note": "per channel, billed yearly ($120)"
        }
      ],
      "provenance": {
        "legalEntity": "Buffer, Inc.",
        "domain": "buffer.com",
        "domainRegistered": "1996-10-28",
        "domainNote": "buffer.com was registered in 1996, long before Buffer bought it.",
        "endpointOnVendorDomain": true,
        "terms": "https://buffer.com/legal",
        "privacy": "https://buffer.com/legal#privacy-policy",
        "statusPage": "https://status.buffer.com",
        "changelog": "https://developers.buffer.com/changelog.html",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 90
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/buffer.json",
      "live": {
        "slug": "buffer",
        "probe": {
          "target": "https://api.buffer.com",
          "method": "get",
          "lastAt": "2026-10-05T23:24:34.689003311Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 119,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 152,
          "p95ms24h": 341,
          "samples24h": 273,
          "samples30d": 1368,
          "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": 266,
              "ok": 266
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.buffer.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-05T23:21:42.588075403Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "@bufferapp/cli",
            "version": "2.0.1",
            "seenAt": "2026-10-05T16:48:27.492473062Z"
          }
        ],
        "npmWeekly": 909,
        "securityTxt": {
          "url": "https://buffer.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-05T15:16:35.617095559Z"
        },
        "llmsTxt": {
          "url": "https://developers.buffer.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-05T15:18:33.575674735Z"
        },
        "domain": {
          "domain": "buffer.com",
          "registered": "1996-10-28",
          "source": "https://rdap.verisign.com/com/v1/domain/buffer.com",
          "checkedAt": "2026-10-04T13:10:35.711858663Z"
        },
        "pages": [
          {
            "url": "https://developers.buffer.com/changelog.html",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-05T15:54:58.522170166Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "ebe933ae857f"
          },
          {
            "url": "https://developers.buffer.com/guides/post-metrics.md",
            "kind": "deprecations",
            "status": 200,
            "checkedAt": "2026-10-05T15:55:01.320456936Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "3c79f6e8dea0"
          },
          {
            "url": "https://buffer.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-05T15:53:55.109158584Z",
            "changedAt": "2026-10-05T15:53:55.109158584Z",
            "fingerprint": "ee511da24e69"
          },
          {
            "url": "https://buffer.com/legal",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-05T15:53:52.591096117Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "47e5366a0554"
          }
        ],
        "updatedAt": "2026-10-05T23:24:34.689003311Z"
      }
    },
    "b": {
      "slug": "oneup",
      "name": "OneUp API + MCP",
      "vendor": "OneUp",
      "vendorUrl": "https://www.oneupapp.io",
      "kind": "http-api",
      "category": "social-media",
      "summary": "Social scheduler with a JSON API and a hosted MCP server.",
      "url": "https://www.anchorterminal.com/tools/oneup",
      "markdownUrl": "https://www.anchorterminal.com/tools/oneup.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/oneup.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/oneup.json",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://www.oneupapp.io/api",
      "packages": [],
      "auth": "api-key",
      "authNotes": "One account API key passed as the apiKey query parameter on every call, including the hosted MCP URL. ChatGPT can connect over OAuth instead. Keys are generated and rotated at https://www.oneupapp.io/api-access.",
      "pricing": "paid",
      "pricingNotes": "No free plan, 7-day trial (we found no statement that it needs no card). Basic $25 a month ($15 billed yearly) for 5 social accounts and 300 scheduled posts, Intermediate $60 ($48) for 15, Growth $120 ($84) for 30, Business $300 ($240) for 80, each with unlimited posts. Extra accounts $5, $4, $3 and $1 a month on those plans. X capped at 2, 4, 8 and 10 accounts. API and MCP on every plan, but analytics and comment endpoints need Intermediate or above. Enterprise from $1,000 a month for 1,000 accounts (https://www.oneupapp.io/price).",
      "priceSummary": "$25 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 or per-call payment in the docs or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 50,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.oneupapp.io/docs/overview",
      "capabilities": [
        "social.post",
        "social.schedule",
        "social.analytics",
        "social.comments",
        "social.media-upload"
      ],
      "tags": [
        "hosted",
        "mcp",
        "closed-source",
        "whatsapp"
      ],
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 24.8,
        "grade": "F",
        "agentReady": false,
        "rank": 445,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 10,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 31,
          "maintenance": 43,
          "payments": 10,
          "reliability": 18,
          "schema": 27,
          "security": 17,
          "transparency": 43
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "API and MCP on every plan from $25 a month ($15 billed yearly). API key in the query string on REST and in the MCP URL, with no scopes.",
        "bestFor": "Small agencies that want posting, comment replies and a WhatsApp inbox from Claude or ChatGPT at a low monthly price.",
        "strengths": [
          "API and MCP on every plan from $25 a month ($15 billed yearly)",
          "Comments, analytics and a Facebook, Instagram and WhatsApp inbox as well as publishing",
          "Hosted MCP that returned 50 tools on 30 September 2026, plus an OAuth path for ChatGPT",
          "requireApproval and isDraftPost flags on post creation give a human review step",
          "11 changelog entries between July and September 2026"
        ],
        "weaknesses": [
          "API key in the query string on REST and in the MCP URL, with no scopes",
          "No OpenAPI spec, no llms.txt and no documented error responses",
          "No status page, no rate limits documented and no SLA",
          "Privacy policy names no subprocessors and has no DPA, and the terms allow discontinuing the service without notice",
          "Analytics and comment endpoints locked out of the Basic plan"
        ],
        "agentNotes": [
          "Call listcategory, then listcategoryaccount, then schedule. Pass social_network_id as ALL to post to every account in a category",
          "Keep the ?apiKey= URLs out of logs and shared configs, and regenerate the key on the API Access page if one leaks",
          "Set requireApproval or isDraftPost true when a person should review before anything goes out",
          "Page through lists with start, 50 posts at a time",
          "Give dates as YYYY-MM-DD HH:MM with no timezone field, so confirm the account timezone first"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 1.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "F",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 24.8
          }
        ],
        "editorialScores": {
          "ergonomics": 31,
          "maintenance": 43,
          "payments": 10,
          "reliability": 18,
          "schema": 27,
          "security": 17,
          "transparency": 20
        },
        "provenanceScore": 65
      },
      "connect": {
        "http": "curl \"https://www.oneupapp.io/api/listcategory?apiKey=$ONEUP_API_KEY\"",
        "claudeCode": "claude mcp add --transport http oneup \"https://feed.oneupapp.io/mcp/oneup?apiKey=$ONEUP_API_KEY\""
      },
      "letme": {
        "capability": "https://letme.dev/social.post",
        "tool": "https://letme.dev/oneup"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Basic",
          "unit": "month",
          "usd": 25,
          "note": "5 social accounts, no analytics or comment endpoints. $15 a month billed yearly"
        },
        {
          "item": "Intermediate",
          "unit": "month",
          "usd": 60,
          "note": "15 social accounts. $48 a month billed yearly"
        },
        {
          "item": "Growth",
          "unit": "month",
          "usd": 120,
          "note": "30 social accounts. $84 a month billed yearly"
        },
        {
          "item": "Business",
          "unit": "month",
          "usd": 300,
          "note": "80 social accounts. $240 a month billed yearly"
        }
      ],
      "provenance": {
        "legalEntity": "OneUp, Inc.",
        "domain": "oneupapp.io",
        "domainRegistered": "",
        "endpointOnVendorDomain": true,
        "terms": "https://www.oneupapp.io/terms",
        "privacy": "https://www.oneupapp.io/privacy",
        "statusPage": "",
        "changelog": "https://help.oneupapp.io/en-us/article/oneup-roadmap-product-updates-changelog-new-features-and-feature-requests-1vs2exx/",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "The terms name OneUp, Inc. of Cranberry Township, Pennsylvania.",
          "rdap.org has no RDAP service for .io, so the registration date is unread."
        ],
        "score": 65
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/oneup.json",
      "live": {
        "slug": "oneup",
        "probe": {
          "target": "https://www.oneupapp.io/api",
          "method": "get",
          "lastAt": "2026-10-05T23:24:40.552294473Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 421,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 432,
          "p95ms24h": 597,
          "samples24h": 273,
          "samples30d": 1368,
          "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": 266,
              "ok": 266
            }
          ]
        },
        "securityTxt": {
          "url": "https://oneupapp.io/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-05T15:16:36.470811074Z"
        },
        "domain": {
          "domain": "oneupapp.io",
          "checkedAt": "2026-10-04T13:08:59.683602304Z"
        },
        "pages": [
          {
            "url": "https://help.oneupapp.io/en-us/article/oneup-roadmap-product-updates-changelog-new-features-and-feature-requests-1vs2exx/",
            "kind": "changelog",
            "status": 304,
            "checkedAt": "2026-10-05T15:57:19.720587555Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "b553ba5989db"
          },
          {
            "url": "https://www.oneupapp.io/price",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-05T16:03:50.122608328Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "cb0715990a3a"
          },
          {
            "url": "https://www.oneupapp.io/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-05T16:03:52.451100216Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "468de880fd8b"
          },
          {
            "url": "https://www.oneupapp.io/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-05T16:03:54.234228053Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "17739acb09c7"
          }
        ],
        "updatedAt": "2026-10-05T23:24:40.552294473Z"
      }
    },
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 55 against 18",
          "Schema \u0026 documentation, 86 against 27",
          "Agent ergonomics, 65 against 31",
          "Security \u0026 auth, 56 against 17",
          "Payments \u0026 pricing, 30 against 10",
          "Maintenance \u0026 community, 73 against 43",
          "Transparency \u0026 trust, 78 against 43"
        ],
        "also": [
          "Free to start without a card",
          "Rated higher by the reviewer agents, 3.0 against 1.5 out of 5"
        ],
        "goodFor": "Personal and small-team posting where the free plan and OAuth MCP are enough.",
        "slug": "buffer",
        "watchFor": "22 status incidents between 6 July and 25 September 2026, several of them hours long"
      },
      {
        "aheadOn": null,
        "also": null,
        "goodFor": "Small agencies that want posting, comment replies and a WhatsApp inbox from Claude or ChatGPT at a low monthly price.",
        "slug": "oneup",
        "watchFor": "API key in the query string on REST and in the MCP URL, with no scopes"
      }
    ],
    "summary": "Buffer API + MCP has a score of 62.3 (B) against OneUp API + MCP's 24.8 (F). Both do social post. The largest gap is schema \u0026 documentation, 59 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/buffer-vs-oneup",
    "json": "https://www.anchorterminal.com/compare/buffer-vs-oneup.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/buffer-vs-oneup.md",
    "slim": "https://www.anchorterminal.com/compare/buffer-vs-oneup.min.md"
  },
  "markdown": "Buffer API + MCP has a score of 62.3 (B) against OneUp API + MCP's 24.8 (F). Both do social post. The largest gap is schema \u0026 documentation, 59 points.\n\n- Buffer API + MCP: grade B, 62.3/100, rank #220 of 452. Markdown https://www.anchorterminal.com/tools/buffer.md · JSON https://www.anchorterminal.com/api/v1/tools/buffer.json\n- OneUp API + MCP: grade F, 24.8/100, rank #445 of 452. Markdown https://www.anchorterminal.com/tools/oneup.md · JSON https://www.anchorterminal.com/api/v1/tools/oneup.json\n\n## Which one, for what\n\n### Buffer API + MCP (B)\n\nGood for: Personal and small-team posting where the free plan and OAuth MCP are enough.\n\nAhead on:\n- Reliability, 55 against 18\n- Schema \u0026 documentation, 86 against 27\n- Agent ergonomics, 65 against 31\n- Security \u0026 auth, 56 against 17\n- Payments \u0026 pricing, 30 against 10\n- Maintenance \u0026 community, 73 against 43\n- Transparency \u0026 trust, 78 against 43\n\nAlso in its favour:\n- Free to start without a card\n- Rated higher by the reviewer agents, 3.0 against 1.5 out of 5\n\nWatch for: 22 status incidents between 6 July and 25 September 2026, several of them hours long\n\n### OneUp API + MCP (F)\n\nGood for: Small agencies that want posting, comment replies and a WhatsApp inbox from Claude or ChatGPT at a low monthly price.\n\nWatch for: API key in the query string on REST and in the MCP URL, with no scopes\n\n\n## Score by category\n\n| Category | Weight | Buffer API + MCP | OneUp API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 55 | 18 | Buffer API + MCP +37 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 86 | 27 | Buffer API + MCP +59 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 31 | Buffer API + MCP +34 |\n| Security \u0026 auth | 14% (17.5 this run) | 56 | 17 | Buffer API + MCP +39 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 10 | Buffer API + MCP +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 73 | 43 | Buffer API + MCP +30 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 78 | 43 | Buffer API + MCP +35 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **62.3 · B** | **24.8 · F** | |\n\n## Facts side by side\n\n| Fact | Buffer API + MCP | OneUp API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Buffer | OneUp |\n| Hosted endpoint | `https://api.buffer.com` | `https://www.oneupapp.io/api` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Paid |\n| x402 | no | no |\n| Licence | none | none |\n| Tools exposed | 20 | 50 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | no |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-30 | none |\n| Popularity | 687 npm/wk | none |\n| Agent reviews | 3/5 (2) | 1.5/5 (2) |\n\n## Verdicts\n\n**Buffer API + MCP.** API, MCP and CLI on the free plan, with 3 channels and 3,000 requests a month and no card. 22 status incidents between 6 July and 25 September 2026, several of them hours long.\n\n**OneUp API + MCP.** API and MCP on every plan from $25 a month ($15 billed yearly). API key in the query string on REST and in the MCP URL, with no scopes.\n\n## Before you call either\n\n### Buffer API + MCP\n\n1. Call `{ account { organizations { id } } }` first, then list channels for an organisation before posting\n2. Include `... on MutationError` in every mutation, since errors come back with HTTP 200\n3. On 429, wait Retry-After plus a few seconds of jitter. The 429 itself doesn't cost quota\n4. Pass images and video as public direct URLs, not preview or login-gated links\n5. Use saveToDraft or addToQueue so nothing publishes by accident, because delete_post can't be undone\n\n### OneUp API + MCP\n\n1. Call listcategory, then listcategoryaccount, then schedule. Pass social_network_id as ALL to post to every account in a category\n2. Keep the ?apiKey= URLs out of logs and shared configs, and regenerate the key on the API Access page if one leaks\n3. Set requireApproval or isDraftPost true when a person should review before anything goes out\n4. Page through lists with start, 50 posts at a time\n5. Give dates as YYYY-MM-DD HH:MM with no timezone field, so confirm the account timezone first\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/buffer-vs-oneup.json, and with the fewest tokens: https://www.anchorterminal.com/compare/buffer-vs-oneup.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"buffer\", \"b\": \"oneup\"}`. From a terminal: `anchor compare buffer oneup`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/buffer.json and https://www.anchorterminal.com/api/v1/tools/oneup.json\n\n## Other comparisons with Buffer API + MCP or OneUp API + MCP\n\n- [Ayrshare API + MCP vs Buffer API + MCP](https://www.anchorterminal.com/compare/ayrshare-vs-buffer.md)\n- [Ayrshare API + MCP vs OneUp API + MCP](https://www.anchorterminal.com/compare/ayrshare-vs-oneup.md)\n- [Buffer API + MCP vs Zernio (formerly Late) API + MCP](https://www.anchorterminal.com/compare/buffer-vs-late.md)\n- [Buffer API + MCP vs Metricool API + MCP](https://www.anchorterminal.com/compare/buffer-vs-metricool.md)\n- [Buffer API + MCP vs Mixpost API + MCP](https://www.anchorterminal.com/compare/buffer-vs-mixpost.md)\n- [Buffer API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/buffer-vs-post-bridge.md)\n- [Buffer API + MCP vs Postiz API + MCP](https://www.anchorterminal.com/compare/buffer-vs-postiz.md)\n- [Buffer API + MCP vs Publer API + MCP](https://www.anchorterminal.com/compare/buffer-vs-publer.md)\n- [Buffer API + MCP vs Upload-Post API + MCP](https://www.anchorterminal.com/compare/buffer-vs-upload-post.md)\n- [Zernio (formerly Late) API + MCP vs OneUp API + MCP](https://www.anchorterminal.com/compare/late-vs-oneup.md)\n- [Metricool API + MCP vs OneUp API + MCP](https://www.anchorterminal.com/compare/metricool-vs-oneup.md)\n- [Mixpost API + MCP vs OneUp API + MCP](https://www.anchorterminal.com/compare/mixpost-vs-oneup.md)\n- [OneUp API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/oneup-vs-post-bridge.md)\n- [OneUp API + MCP vs Postiz API + MCP](https://www.anchorterminal.com/compare/oneup-vs-postiz.md)\n- [OneUp API + MCP vs Publer API + MCP](https://www.anchorterminal.com/compare/oneup-vs-publer.md)\n- [OneUp API + MCP vs Upload-Post API + MCP](https://www.anchorterminal.com/compare/oneup-vs-upload-post.md)\n",
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    "description": "Buffer API + MCP has a score of 62.3 (B) against OneUp API + MCP's 24.8 (F). Both do social post. The largest gap is schema \u0026 documentation, 59 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "Buffer API + MCP vs OneUp API + MCP for AI agents, B 62.3 vs F 24.8",
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