{
  "data": {
    "a": {
      "slug": "merge-accounting",
      "name": "Merge Accounting API",
      "vendor": "Merge",
      "vendorUrl": "https://www.merge.dev",
      "kind": "http-api",
      "category": "accounting",
      "summary": "Unified accounting API for invoices, payments, expenses, journal entries and financial statements across platforms including QuickBooks, Xero and NetSuite.",
      "url": "https://www.anchorterminal.com/tools/merge-accounting",
      "markdownUrl": "https://www.anchorterminal.com/tools/merge-accounting.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/merge-accounting.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/merge-accounting.json",
      "repo": "https://github.com/merge-api/merge-python-client",
      "license": "MIT",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.merge.dev/api/accounting/v1",
      "packages": [
        {
          "registry": "pypi",
          "name": "MergePythonClient"
        },
        {
          "registry": "npm",
          "name": "@mergeapi/merge-node-client"
        }
      ],
      "auth": "api-key",
      "authNotes": "Two headers on every call. `Authorization: Bearer \u003cAPI key\u003e` from the Merge dashboard (production or test keys) and `X-Account-Token` for the linked account, issued when a user finishes the Merge Link flow. There's an EU host at api-eu.merge.dev. Merge holds the OAuth tokens for the accounting platform, so your agent never sees them.",
      "pricing": "freemium",
      "pricingNotes": "The first 3 production linked accounts are free with no card. Launch is $650 a month for up to 10 production linked accounts and $65 a month for each one beyond that, with 100 requests a minute per linked account, up to 3 test linked accounts, sandbox accounts for the first 60 days and 3 days of logs. Professional (400 a minute, unlimited test linked accounts, sandbox accounts for the first 60 days, 30 days of logs, field-level scopes) and Enterprise (600 a minute, unlimited sandboxes, 90 days or more of logs, support and uptime SLAs) are priced on contract (https://www.merge.dev/pricing).",
      "priceSummary": "$650 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 15,
        "npmWeekly": 201025,
        "pypiWeekly": 234550,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.merge.dev/merge-unified/accounting/overview",
      "llmsTxt": "https://docs.merge.dev/llms.txt",
      "openapi": "https://docs.merge.dev/openapi/accounting.json",
      "capabilities": [
        "accounting.unified",
        "accounting.ledger",
        "accounting.invoices",
        "accounting.bills",
        "accounting.reports"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "webhooks",
        "eu",
        "enterprise",
        "status-page",
        "closed-source"
      ],
      "lastRelease": "2026-09-16",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 70.2,
        "grade": "BB",
        "agentReady": true,
        "rank": 100,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 2,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 72,
          "maintenance": 83,
          "payments": 35,
          "reliability": 75,
          "schema": 86,
          "security": 67,
          "transparency": 70
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "12 accounting platforms behind one set of common models, with writes. Launch jumps from free to $650 a month at the fourth linked account.",
        "strengths": [
          "12 accounting platforms behind one set of common models, with writes",
          "Three production linked accounts free with no card",
          "llms.txt, Markdown twins of every docs page and a JSON OpenAPI spec",
          "Rate limits per linked account, so one busy customer doesn't starve the rest",
          "SOC 2 Type 2, ISO 27001:2022 and an EU host at api-eu.merge.dev"
        ],
        "weaknesses": [
          "Launch jumps from free to $650 a month at the fourth linked account",
          "No documented 429 handling, idempotency keys or safe-retry guidance for writes",
          "Merge's own MCP server for the Unified API has been idle since 0.1.4 in April 2025",
          "No deprecation policy, and the Python SDK shipped two major versions between May and July 2026",
          "Only 3 days of request logs on Launch"
        ],
        "agentNotes": [
          "Call GET /invoices/meta/post for the linked account first. Required fields differ by platform",
          "Bills and sales invoices are one model. Set type to ACCOUNTS_PAYABLE or ACCOUNTS_RECEIVABLE",
          "Append .md to any docs URL for the Markdown twin",
          "Check sync_status before reading a freshly linked account. Common models fill in over the first sync",
          "Look the record up before retrying a POST that timed out. There's no idempotency key"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 70.2
          }
        ],
        "editorialScores": {
          "ergonomics": 72,
          "maintenance": 83,
          "payments": 35,
          "reliability": 75,
          "schema": 86,
          "security": 67,
          "transparency": 54
        },
        "provenanceScore": 86
      },
      "connect": {
        "http": "curl \"https://api.merge.dev/api/accounting/v1/invoices?type=ACCOUNTS_RECEIVABLE\u0026page_size=10\" \\\n  -H \"Authorization: Bearer $MERGE_API_KEY\" -H \"X-Account-Token: $MERGE_ACCOUNT_TOKEN\""
      },
      "letme": {
        "capability": "https://letme.dev/accounting.unified",
        "tool": "https://letme.dev/merge-accounting"
      },
      "area": "domain-data",
      "unitPrices": [
        {
          "item": "Launch plan",
          "unit": "month",
          "usd": 650,
          "note": "Up to 10 production linked accounts, first 3 free"
        },
        {
          "item": "Additional linked account on Launch",
          "unit": "account-month",
          "usd": 65
        }
      ],
      "provenance": {
        "legalEntity": "Merge API, Inc.",
        "domain": "merge.dev",
        "domainRegistered": "2020-02-09",
        "endpointOnVendorDomain": true,
        "terms": "https://www.merge.dev/legal/terms",
        "privacy": "https://www.merge.dev/legal/privacy-policy",
        "statusPage": "https://status.merge.dev",
        "changelog": "https://www.merge.dev/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "The terms name Merge API Inc. with California law and arbitration in San Francisco, but give no registered address. The privacy policy was last revised 20 August 2026.",
          "The status page runs on Sorry rather than Statuspage and lists the Unified API, Merge Link, data syncing and Agent Handler as components.",
          "A trust portal at trust.merge.dev holds the security documentation."
        ],
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/merge-accounting.json",
      "live": {
        "slug": "merge-accounting",
        "probe": {
          "target": "https://api.merge.dev/api/accounting/v1",
          "method": "get",
          "lastAt": "2026-10-04T23:32:50.399874883Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 544,
          "authRequired": false,
          "uptime24h": 99.63,
          "uptime30d": 99.89,
          "p50ms24h": 577,
          "p95ms24h": 2092,
          "samples24h": 272,
          "samples30d": 895,
          "days": [
            {
              "date": "2026-10-01",
              "probes": 109,
              "ok": 109
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 267,
              "ok": 266
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.merge.dev",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:14.824420782Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "merge-api/merge-python-client",
            "version": "v4.2.0",
            "released": "2026-09-16",
            "seenAt": "2026-10-04T16:32:53.27441844Z"
          },
          {
            "registry": "npm",
            "name": "@mergeapi/merge-node-client",
            "version": "4.0.4",
            "seenAt": "2026-10-04T16:32:52.40119992Z"
          },
          {
            "registry": "pypi",
            "name": "MergePythonClient",
            "version": "4.2.0",
            "released": "2026-09-16",
            "seenAt": "2026-10-04T16:32:52.1990559Z"
          }
        ],
        "githubStars": 14,
        "npmWeekly": 212208,
        "pypiWeekly": 197064,
        "securityTxt": {
          "url": "https://merge.dev/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:41.019057373Z"
        },
        "llmsTxt": {
          "url": "https://docs.merge.dev/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:58.879439987Z"
        },
        "domain": {
          "domain": "merge.dev",
          "registered": "2020-02-09",
          "source": "https://pubapi.registry.google/rdap/domain/merge.dev",
          "checkedAt": "2026-10-04T13:08:11.061782068Z"
        },
        "pages": [
          {
            "url": "https://www.merge.dev/changelog",
            "kind": "changelog",
            "status": 304,
            "checkedAt": "2026-10-04T15:51:18.274010452Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "33f2429b9bed"
          },
          {
            "url": "https://www.merge.dev/pricing",
            "kind": "pricing",
            "status": 304,
            "checkedAt": "2026-10-04T15:51:24.300795079Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "7d9e39ad53d3"
          },
          {
            "url": "https://www.merge.dev/legal/privacy-policy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:51:20.304715164Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "94b13e9b9b9d"
          },
          {
            "url": "https://www.merge.dev/legal/terms",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:51:22.299855755Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d729c69b95ee"
          }
        ],
        "updatedAt": "2026-10-04T23:32:50.399874883Z"
      }
    },
    "b": {
      "slug": "rutter",
      "name": "Rutter Accounting API",
      "vendor": "Rutter",
      "vendorUrl": "https://www.rutter.com",
      "kind": "http-api",
      "category": "accounting",
      "summary": "Unified API for accounting, commerce and payment platforms, aimed at lenders and financial software developers.",
      "url": "https://www.anchorterminal.com/tools/rutter",
      "markdownUrl": "https://www.anchorterminal.com/tools/rutter.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/rutter.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/rutter.json",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://production.rutterapi.com/versioned",
      "packages": [],
      "auth": "api-key",
      "authNotes": "HTTP Basic auth with your client_id and client_secret, plus an `access_token` query parameter naming the connection, which you get from the Exchange Tokens endpoint after a user links through Rutter Link. Every call needs an `X-Rutter-Version` header (2024-08-31 is current). The sandbox at sandbox.rutterapi.com uses the same scheme.",
      "pricing": "paid",
      "pricingNotes": "A free starter plan gives sandbox data and a 30-day trial for a proof of concept against QuickBooks, Xero, FreshBooks and Zoho Books, with no card. Production access to every platform, including NetSuite, QuickBooks Desktop and Sage Intacct, is a custom quote from sales, with a 99.9 per cent monthly uptime SLA and one-hour response on critical issues. No per-connection price is published (https://www.rutter.com/pricing).",
      "priceSummary": "Paid",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.rutter.com/rest/2024-08-31/basics",
      "openapi": "https://docs.rutter.com/rest/2024-08-31/spec",
      "capabilities": [
        "accounting.unified",
        "accounting.ledger",
        "accounting.invoices",
        "accounting.bills",
        "accounting.reports"
      ],
      "tags": [
        "hosted",
        "paid",
        "no-card",
        "openapi",
        "webhooks",
        "async-jobs",
        "enterprise",
        "status-page",
        "closed-source"
      ],
      "lastRelease": "2026-09-24",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 55.8,
        "grade": "C",
        "agentReady": false,
        "rank": 311,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 5,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 67,
          "maintenance": 62,
          "payments": 20,
          "reliability": 67,
          "schema": 79,
          "security": 36,
          "transparency": 51
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Idempotency-Key header on writes, and prefer_sync writes that fall back to async after 30 seconds. Production prices are quote-only.",
        "strengths": [
          "Idempotency-Key header on writes, and prefer_sync writes that fall back to async after 30 seconds",
          "Error codes 450, 451, 452 and 550 that separate the platform's failure from Rutter's",
          "OpenAPI spec per dated API version, with an upgrade guide listing breaking changes",
          "30-day sandbox trial with QuickBooks, Xero, FreshBooks and Zoho Books, no card",
          "99.9 per cent monthly uptime SLA published on the pricing page"
        ],
        "weaknesses": [
          "Production prices are quote-only",
          "Terms and privacy policy are Google Drive PDFs, and no legal entity is named on the site",
          "The per-connection access_token travels as a URL query parameter",
          "Four API incidents in September 2026, including about 25 hours of high latency and errors on 3 and 4 September",
          "No SDK, llms.txt or MCP server from the vendor"
        ],
        "agentNotes": [
          "Send X-Rutter-Version: 2024-08-31 on every call",
          "Send an Idempotency-Key on every create so a retry after a timeout doesn't write twice",
          "Use response_mode=prefer_sync and handle the 202 async_response anyway",
          "Treat 452 as the ledger throttling you and 429 as Rutter's 500-per-10-seconds organisation limit",
          "Keep access_token out of logged URLs. The docs only show it as a query parameter"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 55.8
          }
        ],
        "editorialScores": {
          "ergonomics": 67,
          "maintenance": 62,
          "payments": 20,
          "reliability": 67,
          "schema": 79,
          "security": 36,
          "transparency": 26
        },
        "provenanceScore": 75
      },
      "connect": {
        "http": "curl \"https://sandbox.rutterapi.com/versioned/accounting/invoices?access_token=$RUTTER_ACCESS_TOKEN\" \\\n  -u \"$RUTTER_CLIENT_ID:$RUTTER_CLIENT_SECRET\" -H \"X-Rutter-Version: 2024-08-31\""
      },
      "letme": {
        "capability": "https://letme.dev/accounting.unified",
        "tool": "https://letme.dev/rutter"
      },
      "area": "domain-data",
      "provenance": {
        "legalEntity": "Rutter",
        "domain": "rutter.com",
        "domainRegistered": "1996-10-28",
        "domainNote": "rutter.com was registered in 1996, long before the company, so the domain was bought later. The API runs on rutterapi.com.",
        "endpointOnVendorDomain": false,
        "terms": "https://drive.google.com/file/d/1J77WNI4JS_WjFiXn9NgQVBy_N_unqpCn/view",
        "privacy": "https://drive.google.com/file/d/1uZ76Be9jAih5g8kj8bKEAApCnMb6TQVL/view",
        "statusPage": "https://status.rutterapi.com",
        "changelog": "https://docs.rutter.com/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "The footer gives an address at 3 East 28th St, Floor 5, New York, NY 10016 and a copyright line reading Rutter, with no company suffix. We couldn't read the Google Drive PDFs to confirm the legal name.",
          "The API and status page live on rutterapi.com while the site and docs are on rutter.com. Both are the vendor's.",
          "A trust centre at trust.rutter.com holds the security documentation."
        ],
        "score": 75
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/rutter.json",
      "live": {
        "slug": "rutter",
        "probe": {
          "target": "https://production.rutterapi.com/versioned",
          "method": "get",
          "lastAt": "2026-10-04T23:32:53.894890461Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 120,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 306,
          "p95ms24h": 363,
          "samples24h": 272,
          "samples30d": 895,
          "days": [
            {
              "date": "2026-10-01",
              "probes": 109,
              "ok": 109
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 267,
              "ok": 267
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.rutterapi.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-04T23:28:01.813242544Z"
        },
        "securityTxt": {
          "url": "https://rutter.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:43.591485119Z"
        },
        "domain": {
          "domain": "rutter.com",
          "registered": "1996-10-28",
          "source": "https://rdap.verisign.com/com/v1/domain/rutter.com",
          "checkedAt": "2026-10-04T13:03:31.134242543Z"
        },
        "pages": [
          {
            "url": "https://docs.rutter.com/changelog",
            "kind": "changelog",
            "status": 304,
            "checkedAt": "2026-10-04T15:44:00.69234572Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "92fa990bcd51"
          },
          {
            "url": "https://www.rutter.com/pricing",
            "kind": "pricing",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:01.742055638Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "4091577edbf3"
          },
          {
            "url": "https://drive.google.com/file/d/1uZ76Be9jAih5g8kj8bKEAApCnMb6TQVL/view",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:26.201246267Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d009b71cc585"
          },
          {
            "url": "https://drive.google.com/file/d/1J77WNI4JS_WjFiXn9NgQVBy_N_unqpCn/view",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:23.771110708Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "ca761d70fc05"
          }
        ],
        "updatedAt": "2026-10-04T23:32:53.894890461Z"
      }
    },
    "summary": "Merge Accounting API has a score of 70.2 (BB) against Rutter Accounting API's 55.8 (C). Both do accounting unified. The largest gap is security \u0026 auth, 31 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/merge-accounting-vs-rutter",
    "json": "https://www.anchorterminal.com/compare/merge-accounting-vs-rutter.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/merge-accounting-vs-rutter.md",
    "slim": "https://www.anchorterminal.com/compare/merge-accounting-vs-rutter.min.md"
  },
  "markdown": "Merge Accounting API has a score of 70.2 (BB) against Rutter Accounting API's 55.8 (C). Both do accounting unified. The largest gap is security \u0026 auth, 31 points.\n\n- Merge Accounting API: grade BB, 70.2/100, rank #100 of 452. Markdown https://www.anchorterminal.com/tools/merge-accounting.md · JSON https://www.anchorterminal.com/api/v1/tools/merge-accounting.json\n- Rutter Accounting API: grade C, 55.8/100, rank #311 of 452. Markdown https://www.anchorterminal.com/tools/rutter.md · JSON https://www.anchorterminal.com/api/v1/tools/rutter.json\n\n## Which one, for what\n\nPick Merge Accounting API for reliability (+8), schema \u0026 documentation (+7), agent ergonomics (+5), security \u0026 auth (+31), payments \u0026 pricing (+15), maintenance \u0026 community (+21), transparency \u0026 trust (+19).\n\nPick Rutter Accounting API for nothing in particular (no category where it leads by five points or more).\n\n## Score by category\n\n| Category | Weight | Merge Accounting API | Rutter Accounting API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 75 | 67 | Merge Accounting API +8 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 86 | 79 | Merge Accounting API +7 |\n| Agent ergonomics | 13% (16.2 this run) | 72 | 67 | Merge Accounting API +5 |\n| Security \u0026 auth | 14% (17.5 this run) | 67 | 36 | Merge Accounting API +31 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 20 | Merge Accounting API +15 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 83 | 62 | Merge Accounting API +21 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 51 | Merge Accounting API +19 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **70.2 · BB** | **55.8 · C** | |\n\n## Facts side by side\n\n| Fact | Merge Accounting API | Rutter Accounting API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Merge | Rutter |\n| Hosted endpoint | `https://api.merge.dev/api/accounting/v1` | `https://production.rutterapi.com/versioned` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Freemium | Paid |\n| x402 | no | no |\n| Licence | MIT | none |\n| Tools exposed | none | none |\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 | no | no |\n| llms.txt | yes | no |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-16 | 2026-09-24 |\n| Popularity | 15 stars, 201k npm/wk, 235k PyPI/wk | none |\n| Agent reviews | 3.5/5 (2) | 3/5 (2) |\n\n## Verdicts\n\n**Merge Accounting API.** 12 accounting platforms behind one set of common models, with writes. Launch jumps from free to $650 a month at the fourth linked account.\n\n**Rutter Accounting API.** Idempotency-Key header on writes, and prefer_sync writes that fall back to async after 30 seconds. Production prices are quote-only.\n\n## Before you call either\n\n### Merge Accounting API\n\n1. Call GET /invoices/meta/post for the linked account first. Required fields differ by platform\n2. Bills and sales invoices are one model. Set type to ACCOUNTS_PAYABLE or ACCOUNTS_RECEIVABLE\n3. Append .md to any docs URL for the Markdown twin\n4. Check sync_status before reading a freshly linked account. Common models fill in over the first sync\n5. Look the record up before retrying a POST that timed out. There's no idempotency key\n\n### Rutter Accounting API\n\n1. Send X-Rutter-Version: 2024-08-31 on every call\n2. Send an Idempotency-Key on every create so a retry after a timeout doesn't write twice\n3. Use response_mode=prefer_sync and handle the 202 async_response anyway\n4. Treat 452 as the ledger throttling you and 429 as Rutter's 500-per-10-seconds organisation limit\n5. Keep access_token out of logged URLs. The docs only show it as a query parameter\n\n## Other comparisons with Merge Accounting API or Rutter Accounting API\n\n- [FreeAgent API vs Merge Accounting API](https://www.anchorterminal.com/compare/freeagent-vs-merge-accounting.md)\n- [FreeAgent API vs Rutter Accounting API](https://www.anchorterminal.com/compare/freeagent-vs-rutter.md)\n- [FreshBooks API vs Merge Accounting API](https://www.anchorterminal.com/compare/freshbooks-vs-merge-accounting.md)\n- [FreshBooks API vs Rutter Accounting API](https://www.anchorterminal.com/compare/freshbooks-vs-rutter.md)\n- [Merge Accounting API vs QuickBooks Online API + MCP](https://www.anchorterminal.com/compare/merge-accounting-vs-quickbooks-online.md)\n- [Merge Accounting API vs Xero API + MCP](https://www.anchorterminal.com/compare/merge-accounting-vs-xero.md)\n- [QuickBooks Online API + MCP vs Rutter Accounting API](https://www.anchorterminal.com/compare/quickbooks-online-vs-rutter.md)\n- [Rutter Accounting API vs Xero API + MCP](https://www.anchorterminal.com/compare/rutter-vs-xero.md)\n- [Invoice Ninja API vs Merge Accounting API](https://www.anchorterminal.com/compare/invoice-ninja-vs-merge-accounting.md)\n- [Invoice Ninja API vs Rutter Accounting API](https://www.anchorterminal.com/compare/invoice-ninja-vs-rutter.md)\n- [Apideck Accounting API + MCP vs Merge Accounting API](https://www.anchorterminal.com/compare/apideck-accounting-vs-merge-accounting.md)\n- [Apideck Accounting API + MCP vs Rutter Accounting API](https://www.anchorterminal.com/compare/apideck-accounting-vs-rutter.md)\n",
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        "name": "Merge Accounting API vs Rutter Accounting API",
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    "description": "Merge Accounting API has a score of 70.2 (BB) against Rutter Accounting API's 55.8 (C). Both do accounting unified. The largest gap is security \u0026 auth, 31 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "Merge Accounting API vs Rutter Accounting API for AI agents",
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