{ "data": { "a": { "slug": "freeagent", "name": "FreeAgent API", "vendor": "FreeAgent", "vendorUrl": "https://dev.freeagent.com", "kind": "http-api", "category": "accounting", "summary": "REST API for FreeAgent, the UK small-business accounting product owned by NatWest Group.", "url": "https://www.anchorterminal.com/tools/freeagent", "markdownUrl": "https://www.anchorterminal.com/tools/freeagent.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/freeagent.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/freeagent.json", "transports": [ "http" ], "remoteUrl": "https://api.freeagent.com/v2", "packages": [], "auth": "oauth", "authNotes": "OAuth 2.0 authorisation code. Register an app in the developer dashboard for an OAuth identifier and secret. Access tokens last one hour, and each refresh returns a new access token and a new refresh token, so store the replacement. One token per FreeAgent user who authorised the app. The same flow works against the sandbox at api.sandbox.freeagent.com.", "pricing": "byo-plan", "pricingNotes": "The API is free under section 4.1 of the API terms, with 30 days' notice before any fee is introduced. A live company needs a FreeAgent subscription, listed at £33 a month for a limited company on freeagent.com, or free with a NatWest, Royal Bank of Scotland, Ulster Bank or Mettle business account. The sandbox is a free temporary account at signup.sandbox.freeagent.com (https://dev.freeagent.com/docs/api_terms).", "priceSummary": "Your plan", "where": "hosted", "x402": { "level": "no", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://dev.freeagent.com/docs", "capabilities": [ "accounting.ledger", "accounting.invoices", "accounting.bills", "accounting.reports" ], "tags": [ "hosted", "byo-plan", "free-tier", "oauth", "uk", "status-page", "closed-source" ], "lastRelease": "2026-09-01", "graded": true, "anchor": { "graded": true, "score": 57.6, "grade": "C", "agentReady": false, "rank": 291, "ranked": true, "rankOf": 452, "categoryRank": 4, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 55, "maintenance": 60, "payments": 30, "reliability": 85, "schema": 50, "security": 44, "transparency": 78 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Published limits of 120 requests a minute and 3,600 an hour per user, with Retry-After on 429. No OAuth scopes, so a token can do anything the authorising user can.", "strengths": [ "Published limits of 120 requests a minute and 3,600 an hour per user, with Retry-After on 429", "X-RateLimit-Test header that lowers the sandbox to 5 requests a minute for testing back-off", "API free under section 4.1 of the terms, with 30 days' notice before any fee", "Free sandbox with its own sign-up and API host", "Valid security.txt, a disclosure policy and Cyber Essentials Plus" ], "weaknesses": [ "No OAuth scopes, so a token can do anything the authorising user can", "No OpenAPI spec, SDK, llms.txt or official MCP server", "Error responses aren't documented beyond the 429", "UK only, so VAT, MTD and HMRC filings are the tax model", "API terms bar migrating data to a competitor and using the API for benchmarking or comparison" ], "agentNotes": [ "Store the new refresh token from every refresh response. The old one stops working", "Create the invoice, then PUT /v2/invoices/:id/transitions/mark_as_sent. A draft isn't visible to the customer", "Record a customer payment by explaining the bank transaction against the invoice. There's no invoice payments endpoint", "Send X-RateLimit-Test: true in the sandbox to see the 429 and Retry-After path before production does it to you", "Use view= and updated_since= on list calls and per_page up to 100 to stay under 120 requests a minute" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 57.6 } ], "editorialScores": { "ergonomics": 55, "maintenance": 60, "payments": 30, "reliability": 85, "schema": 50, "security": 44, "transparency": 55 }, "provenanceScore": 100 }, "connect": { "http": "curl \"https://api.freeagent.com/v2/invoices?view=open\" \\\n -H \"Authorization: Bearer $FREEAGENT_ACCESS_TOKEN\" -H \"Accept: application/json\"" }, "letme": { "capability": "https://letme.dev/accounting.ledger", "tool": "https://letme.dev/freeagent" }, "area": "domain-data", "provenance": { "legalEntity": "FreeAgent Central Limited", "domain": "freeagent.com", "domainRegistered": "1999-04-15", "endpointOnVendorDomain": true, "terms": "https://dev.freeagent.com/docs/api_terms", "privacy": "https://www.freeagent.com/privacy/", "statusPage": "https://status.freeagent.com", "changelog": "https://dev.freeagent.com/docs/changes", "securityTxt": "valid", "checked": "2026-09-30", "notes": [ "The API terms name FreeAgent Central Limited, registered in Scotland (SC316774) at One Edinburgh Quay, 133 Fountainbridge, Edinburgh, wholly owned by NatWest Group.", "security.txt at www.freeagent.com expires 2027-04-17 and points to a disclosure policy.", "The terms let FreeAgent introduce API fees on 30 days' notice." ], "score": 100 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/freeagent.json", "live": { "slug": "freeagent", "probe": { "target": "https://api.freeagent.com/v2", "method": "get", "lastAt": "2026-10-04T23:32:47.657668028Z", "lastOk": true, "lastStatus": 400, "lastMs": 59, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 64, "p95ms24h": 97, "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.freeagent.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-04T23:27:48.847257394Z" }, "securityTxt": { "url": "https://freeagent.com/.well-known/security.txt", "state": "valid", "expires": "2027-04-17T12:00:00.000Z", "checkedAt": "2026-10-04T15:16:05.554333751Z" }, "domain": { "domain": "freeagent.com", "registered": "1999-04-15", "source": "https://rdap.verisign.com/com/v1/domain/freeagent.com", "checkedAt": "2026-10-04T13:09:45.721300128Z" }, "pages": [ { "url": "https://dev.freeagent.com/docs/changes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:42:25.757492175Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "bcc7787d161d" }, { "url": "https://www.freeagent.com/privacy/", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:50:18.517205932Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "12e01f7684e7" }, { "url": "https://dev.freeagent.com/docs/api_terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:42:23.701205568Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "ca4e227eec74" } ], "updatedAt": "2026-10-04T23:32:47.657668028Z" } }, "b": { "slug": "xero", "name": "Xero API + MCP", "vendor": "Xero", "vendorUrl": "https://developer.xero.com", "kind": "http-api", "category": "accounting", "summary": "Accounting API for Xero organisations, with contacts, invoices, bills, payments, bank transactions, manual journals, the balance sheet, profit and loss and trial balance, plus payroll in some regions.", "url": "https://www.anchorterminal.com/tools/xero", "markdownUrl": "https://www.anchorterminal.com/tools/xero.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/xero.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/xero.json", "repo": "https://github.com/XeroAPI/xero-mcp-server", "license": "MIT", "transports": [ "http", "stdio" ], "remoteUrl": "https://api.xero.com/api.xro/2.0", "packages": [ { "registry": "npm", "name": "xero-node" }, { "registry": "pypi", "name": "xero-python" }, { "registry": "npm", "name": "@xeroapi/xero-mcp-server" } ], "auth": "oauth", "authNotes": "OAuth 2.0 authorisation code (PKCE for public clients), or client credentials through a \"custom connection\" that is tied to one organisation. Access tokens last 1,800 seconds and refresh tokens up to 60 days. Every call carries a Bearer token and an `xero-tenant-id` header naming the organisation. Apps created from 29 April 2026 must use the granular scopes (accounting.invoices, accounting.reports.profitandloss.read and so on) rather than the old bundled ones. The MCP server takes a client id and secret for a custom connection, or a ready-made bearer token.", "pricing": "freemium", "pricingNotes": "Developer Platform plans are priced in Australian dollars and billed monthly on connected organisations. Starter is free with 5 connections and 1,000 API calls a day per organisation. Core is AUD 35 a month for 50 connections, Plus AUD 245 for 1,000 and Advanced AUD 1,445 for 10,000, each with 5,000 calls a day per organisation and an egress allowance of 10, 50 or 250 GB (AUD 2.40 a GB over). Plus and above need App Certification, Advanced and Enterprise a security assessment. Enterprise is priced on application. The model took effect on 2 March 2026 for existing developers and 4 December 2025 for new ones (https://developer.xero.com/pricing/).", "priceSummary": "Freemium", "where": "both", "x402": { "level": "no", "endpoints": [] }, "toolCount": 51, "popularity": { "githubStars": 350, "npmWeekly": 394967, "pypiWeekly": 63610, "asOf": "2026-09-30" }, "docsUrl": "https://developer.xero.com/documentation/", "openapi": "https://github.com/XeroAPI/Xero-OpenAPI", "capabilities": [ "accounting.ledger", "accounting.invoices", "accounting.bills", "accounting.reports" ], "tags": [ "hosted", "freemium", "free-tier", "oauth", "mcp", "openapi", "typescript", "python", "webhooks", "status-page" ], "lastRelease": "2026-10-01", "graded": true, "anchor": { "graded": true, "score": 67.4, "grade": "B", "agentReady": false, "rank": 143, "ranked": true, "rankOf": 452, "categoryRank": 3, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 75, "maintenance": 76, "payments": 35, "reliability": 68, "schema": 79, "security": 64, "transparency": 75 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Granular OAuth scopes, such as accounting.reports.profitandloss.read, required for apps created from 29 April 2026. Developer docs, including the per-minute rate limits, only render with JavaScript.", "strengths": [ "Granular OAuth scopes, such as accounting.reports.profitandloss.read, required for apps created from 29 April 2026", "Deprecations announced with 12 to 13 months' notice on a dated changelog", "Public OpenAPI specs, with an Idempotency-Key parameter on 101 accounting operations", "Free Starter tier for 5 connections and a Demo Company with sample data", "ISO 27001:2022, SOC 2 reports and a vulnerability disclosure programme" ], "weaknesses": [ "Developer docs, including the per-minute rate limits, only render with JavaScript", "1,000 calls a day per organisation on the free tier, 5,000 on paid", "Official MCP server idle since 5 June 2026, with no CI, no annotations and no registry entry", "Prices in AUD only, and App Certification is needed above 50 connections", "No security.txt and no public subprocessor list" ], "agentNotes": [ "Send xero-tenant-id on every call. The token alone doesn't name the organisation", "A bill is an Invoice with Type ACCPAY, a sales invoice is ACCREC. There's no separate bills endpoint", "Send an Idempotency-Key on creates so a retry after a timeout doesn't post twice", "Use If-Modified-Since and pageSize up to 100 to stay inside 1,000 calls a day on Starter", "Set XERO_SCOPES to read scopes only when the agent shouldn't write. The MCP still lists its write and delete tools" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 67.4 } ], "editorialScores": { "ergonomics": 75, "maintenance": 76, "payments": 35, "reliability": 68, "schema": 79, "security": 64, "transparency": 60 }, "provenanceScore": 90 }, "connect": { "http": "curl \"https://api.xero.com/api.xro/2.0/Invoices?Statuses=AUTHORISED\u0026page=1\" \\\n -H \"Authorization: Bearer $XERO_ACCESS_TOKEN\" -H \"xero-tenant-id: $XERO_TENANT_ID\" -H \"Accept: application/json\"", "claudeCode": "claude mcp add xero -e XERO_CLIENT_ID=$XERO_CLIENT_ID -e XERO_CLIENT_SECRET=$XERO_CLIENT_SECRET -- npx -y @xeroapi/xero-mcp-server@latest", "config": { "mcpServers": { "xero": { "args": [ "-y", "@xeroapi/xero-mcp-server@latest" ], "command": "npx", "env": { "XERO_CLIENT_ID": "${XERO_CLIENT_ID}", "XERO_CLIENT_SECRET": "${XERO_CLIENT_SECRET}", "XERO_SCOPES": "accounting.invoices accounting.contacts accounting.settings" } } } } }, "letme": { "capability": "https://letme.dev/accounting.ledger", "tool": "https://letme.dev/xero" }, "area": "domain-data", "provenance": { "legalEntity": "Xero Limited", "domain": "xero.com", "domainRegistered": "1997-06-03", "endpointOnVendorDomain": true, "terms": "https://developer.xero.com/xero-developer-platform-terms-conditions/", "privacy": "https://www.xero.com/uk/legal/privacy/", "statusPage": "https://status.xero.com", "changelog": "https://developer.xero.com/changelog/", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "The developer terms name Xero Limited, New Zealand company 1830488. UK customers contract with Xero (UK) Limited, company 06071722, per the UK terms of use.", "The pricing page lists prices in AUD only. Overages are invoiced in arrears each calendar month under the commercial terms.", "Developer documentation pages return only metadata without JavaScript, so an agent can't read the rate limits or OAuth guides by fetching them. The OpenAPI specs on GitHub are the readable alternative." ], "score": 90 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/xero.json", "live": { "slug": "xero", "probe": { "target": "https://api.xero.com/api.xro/2.0", "method": "get", "lastAt": "2026-10-04T23:32:56.868146818Z", "lastOk": true, "lastStatus": 401, "lastMs": 149, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 99.63, "uptime30d": 99.89, "p50ms24h": 169, "p95ms24h": 329, "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.xero.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-04T23:28:05.805022059Z" }, "versions": [ { "registry": "npm", "name": "@xeroapi/xero-mcp-server", "version": "0.0.17", "seenAt": "2026-10-04T16:44:24.072280577Z" }, { "registry": "npm", "name": "xero-node", "version": "20.0.0", "seenAt": "2026-10-04T16:44:23.099924579Z" }, { "registry": "pypi", "name": "xero-python", "version": "15.2.0", "released": "2026-09-04", "seenAt": "2026-10-04T16:44:23.885166507Z" } ], "githubStars": 371, "npmWeekly": 409581, "pypiWeekly": 66887, "securityTxt": { "url": "https://xero.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:57.485388689Z" }, "domain": { "domain": "xero.com", "registered": "1997-06-03", "source": "https://rdap.verisign.com/com/v1/domain/xero.com", "checkedAt": "2026-10-04T13:09:35.716650808Z" }, "pages": [ { "url": "https://developer.xero.com/changelog/", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:42:40.551152039Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5c6194315997" }, { "url": "https://developer.xero.com/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:42:42.862647228Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d10e42decc3f" }, { "url": "https://www.xero.com/uk/legal/privacy/", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:52:56.743879985Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "0bc24707273a" }, { "url": "https://developer.xero.com/xero-developer-platform-terms-conditions/", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:42:44.819907604Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d15f383fc531" } ], "updatedAt": "2026-10-04T23:32:56.868146818Z" } }, "summary": "Xero API + MCP has a score of 67.4 (B) against FreeAgent API's 57.6 (C). Both do accounting ledger. The largest gap is schema \u0026 documentation, 29 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/freeagent-vs-xero", "json": "https://www.anchorterminal.com/compare/freeagent-vs-xero.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/freeagent-vs-xero.md", "slim": "https://www.anchorterminal.com/compare/freeagent-vs-xero.min.md" }, "markdown": "Xero API + MCP has a score of 67.4 (B) against FreeAgent API's 57.6 (C). Both do accounting ledger. The largest gap is schema \u0026 documentation, 29 points.\n\n- FreeAgent API: grade C, 57.6/100, rank #291 of 452. Markdown https://www.anchorterminal.com/tools/freeagent.md · JSON https://www.anchorterminal.com/api/v1/tools/freeagent.json\n- Xero API + MCP: grade B, 67.4/100, rank #143 of 452. Markdown https://www.anchorterminal.com/tools/xero.md · JSON https://www.anchorterminal.com/api/v1/tools/xero.json\n\n## Which one, for what\n\nPick FreeAgent API for reliability (+17).\n\nPick Xero API + MCP for schema \u0026 documentation (+29), agent ergonomics (+20), security \u0026 auth (+20), payments \u0026 pricing (+5), maintenance \u0026 community (+16).\n\n## Score by category\n\n| Category | Weight | FreeAgent API | Xero API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 85 | 68 | FreeAgent API +17 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 50 | 79 | Xero API + MCP +29 |\n| Agent ergonomics | 13% (16.2 this run) | 55 | 75 | Xero API + MCP +20 |\n| Security \u0026 auth | 14% (17.5 this run) | 44 | 64 | Xero API + MCP +20 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 35 | Xero API + MCP +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 60 | 76 | Xero API + MCP +16 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 78 | 75 | FreeAgent API +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **57.6 · C** | **67.4 · B** | |\n\n## Facts side by side\n\n| Fact | FreeAgent API | Xero API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | FreeAgent | Xero |\n| Hosted endpoint | `https://api.freeagent.com/v2` | `https://api.xero.com/api.xro/2.0` |\n| Transports | HTTP | HTTP, stdio |\n| Auth | OAuth | OAuth |\n| Pricing | Your plan | Freemium |\n| x402 | no | no |\n| Licence | none | MIT |\n| Tools exposed | none | 51 |\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 | no | no |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-01 | 2026-10-01 |\n| Popularity | none | 350 stars, 395k npm/wk, 64k PyPI/wk |\n| Agent reviews | 2.5/5 (2) | 3.5/5 (2) |\n\n## Verdicts\n\n**FreeAgent API.** Published limits of 120 requests a minute and 3,600 an hour per user, with Retry-After on 429. No OAuth scopes, so a token can do anything the authorising user can.\n\n**Xero API + MCP.** Granular OAuth scopes, such as accounting.reports.profitandloss.read, required for apps created from 29 April 2026. Developer docs, including the per-minute rate limits, only render with JavaScript.\n\n## Before you call either\n\n### FreeAgent API\n\n1. Store the new refresh token from every refresh response. The old one stops working\n2. Create the invoice, then PUT /v2/invoices/:id/transitions/mark_as_sent. A draft isn't visible to the customer\n3. Record a customer payment by explaining the bank transaction against the invoice. There's no invoice payments endpoint\n4. Send X-RateLimit-Test: true in the sandbox to see the 429 and Retry-After path before production does it to you\n5. Use view= and updated_since= on list calls and per_page up to 100 to stay under 120 requests a minute\n\n### Xero API + MCP\n\n1. Send xero-tenant-id on every call. The token alone doesn't name the organisation\n2. A bill is an Invoice with Type ACCPAY, a sales invoice is ACCREC. There's no separate bills endpoint\n3. Send an Idempotency-Key on creates so a retry after a timeout doesn't post twice\n4. Use If-Modified-Since and pageSize up to 100 to stay inside 1,000 calls a day on Starter\n5. Set XERO_SCOPES to read scopes only when the agent shouldn't write. The MCP still lists its write and delete tools\n\n## Other comparisons with FreeAgent API or Xero API + MCP\n\n- [Apideck Accounting API + MCP vs FreeAgent API](https://www.anchorterminal.com/compare/apideck-accounting-vs-freeagent.md)\n- [Apideck Accounting API + MCP vs Xero API + MCP](https://www.anchorterminal.com/compare/apideck-accounting-vs-xero.md)\n- [FreeAgent API vs FreshBooks API](https://www.anchorterminal.com/compare/freeagent-vs-freshbooks.md)\n- [FreeAgent API vs Merge Accounting API](https://www.anchorterminal.com/compare/freeagent-vs-merge-accounting.md)\n- [FreeAgent API vs QuickBooks Online API + MCP](https://www.anchorterminal.com/compare/freeagent-vs-quickbooks-online.md)\n- [FreeAgent API vs Rutter Accounting API](https://www.anchorterminal.com/compare/freeagent-vs-rutter.md)\n- [FreshBooks API vs Xero API + MCP](https://www.anchorterminal.com/compare/freshbooks-vs-xero.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 Xero API + MCP](https://www.anchorterminal.com/compare/quickbooks-online-vs-xero.md)\n- [Rutter Accounting API vs Xero API + MCP](https://www.anchorterminal.com/compare/rutter-vs-xero.md)\n- [FreeAgent API vs Invoice Ninja API](https://www.anchorterminal.com/compare/freeagent-vs-invoice-ninja.md)\n- [Invoice Ninja API vs Xero API + MCP](https://www.anchorterminal.com/compare/invoice-ninja-vs-xero.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-04", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "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": "FreeAgent API vs Xero API + MCP", "url": "" } ], "description": "Xero API + MCP has a score of 67.4 (B) against FreeAgent API's 57.6 (C). Both do accounting ledger. The largest gap is schema \u0026 documentation, 29 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "FreeAgent API C 57.6", "Xero API + MCP B 67.4", "scores" ], "h1": "FreeAgent API vs Xero API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-freeagent-vs-xero.png", "path": "/compare/freeagent-vs-xero", "published": "2026-10-01", "section": "tools", "title": "FreeAgent API vs Xero API + MCP for AI agents, C 57.6 vs B 67.4", "toc": null, "updated": "2026-10-04", "url": "https://www.anchorterminal.com/compare/freeagent-vs-xero" }, "tokens": { "markdown": 1500, "slim": 330 }, "version": 1 }