AILANG × pleo.io

# Integrate Pleo to your accounting system for seamless expense reporting - Pleo [Skip to content](#content) *Header:* [Image: Home] [(link)](/en) [Image: Home] [(link)](/en) Products Solutions Resources Partners [Pricing](/en/pricing) # Explore integrations Connect Pleo to your essential business tools for faster reconciliation, simpler user management, and automated receipt capture. Get time back to focus on your work. Get started for free Category Showing all integrations. [Image: Xero-Marketplace] Xero Instantly sync your Pleo expenses to Xero Accounting [Xero Instantly sync your Pleo expenses to Xero Accounting](/en/integrations/xero) [Image: Netsuite logo] NetSuite Sync and match all transactions with Pleo’s Certified Built for NetSuite Hybrid Integration Accounting [NetSuite Sync and match all transactions with Pleo’s Certified Built for NetSuite Hybrid Integration Accounting](/en/integrations/netsuite-new) [Image: Quickbooks-Marketplace] Quickbooks Save time with one-click expense exports to QuickBooks Accounting [Quickbooks Save time with one-click expense exports to QuickBooks Accounting](/en/integrations/quickbooks-integration) [Image: SAP-success-Marketplace] SAP SuccessFactors Simplify employee onboarding and automate offboarding with our SAP SuccessFactors® integration User Management [SAP SuccessFactors Simplify employee onboarding and automate offboarding with our SAP SuccessFactors® integration User Management](/en/integrations/sap-successfactors) [Image: Freeagent-Marketplace] FreeAgent Export your spending data to FreeAgent with our custom CSV template Accounting [FreeAgent Export your spending data to FreeAgent with our custom CSV template Accounting](/en/integrations/freeagent) [Image: Xledger-Marketplace] XLedger Connect Pleo with Xledger for a seamless export experience Accounting [XLedger Connect Pleo with Xledger for a seamless export experience Accounting](/en/integrations/xledger) [Image] [Image: Twinfield logo] Twinfield Export your Pleo expenses right into Twinfield in a click Accounting [<img data-gatsby-image-ssr="" data-main-image="" style="opacity:0" sizes="(min-width: 1200px) 1200px, 100vw" decoding="async" loading="lazy" src="https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=1200&h=814" srcSet="https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=100&h=68 100w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=116&h=79 116w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=135&h=92 135w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=156&h=106 156w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=181&h=123 181w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=210&h=142 210w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=244&h=166 244w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=283&h=192 283w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=328&h=222 328w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=380&h=258 380w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=441&h=299 441w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=512&h=347 512w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=594&h=403 594w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=689&h=467 689w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=799&h=542 799w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=927&h=629 927w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=1075&h=729 1075w,https://images.prismic.io/commercial-helios/Z_5yRevxEdbNPE5Q_Twinfield-Marketplace-optim.png?ixlib=gatsbyFP&auto=format%2Ccompress&fit=max&w=1200&h=814 1200w" alt="Twinfield logo"/>const t="undefined"!=typeof HTMLImageElement&&"loading"in HTMLImageElement.prototype;if(t){const t=document.querySelectorAll("img[data-main-image]");for(let e of t){e.dataset.src&&(e.setAttribute("src",e.dataset.src),e.removeAttribute("data-src")),e.dataset.srcset&&(e.setAttribute("srcset",e.dataset.srcset),e.removeAttribute("data-srcset"));const t=e.parentNode.querySelectorAll("source[data-srcset]");for(let e of t)e.setAttribute("srcset",e.dataset.srcset),e.removeAttribute("data-srcset");e.complete&&(e.style.opacity=1,e.parentNode.parentNode.querySelector("[data-placeholder-image]").style.opacity=0)}} Twinfield Export your Pleo expenses right into Twinfield in a click Accounting](/en/integrations/twinfield) [Image] BambooHR Simplify employee onboarding and automate offboarding with our BambooHR integration User Management [BambooHR Simplify employee onboarding and automate offboarding with our BambooHR integration User Management](/en/integrations/bamboohr) Show more *Footer:* Product [Overview](/en/features) [Pricing](/en/pricing) [Integrations](/en/integrations) [Status](https://status.pleo.io/) Company [About us](/en/about) [Careers](/en/careers) [Press](/en/press) [Legal](/en/legal) [Brand](https://www.pleobrand.site/) [Contact us](/en/contact) Partnerships [Pleo partnerships](/en/partnerships) [Consulting partnerships](/en/consulting-partnerships) [Accounting partnerships](/en/partners) [Partner directory](/en/partner-directory) Resources [Blog](https://blog.pleo.io/en) [Help centre](https://help.pleo.io/en/support/home) [FAQ](/en/faq) [Webinars and events](/en/webinars-and-events) [Customer stories](/en/customers) [Free accounting resources](/en/accounting-resources-directory) [Reviews](/en/credits) [Developers](https://developers.pleo.io/reference/api-introduction) Solutions [Startups](/en/for-startups) [Small businesses](/en/small-businesses) [Larger businesses](/en/multi-entity-businesses) [Business travel expenses](/en/business-travel-expenses) [Software subscriptions](/en/subscription-management) [Marketing spend](/en/marketing-spend-management) Legal [Master Service Agreement](/en/legal) [Data Processing Agreement](https://www.pleo.io/legal-documents/pleo-data-processing-addendum-en.pdf) [Sub-processors](/en/sub-processors) [Privacy policy](https://www.pleo.io/legal-documents/pleo-privacy-policy-en.pdf) [GDPR](/en/legal/gdpr) [Fraud awareness](https://www.pleo.io/legal-documents/pleo-fraud-awareness-en.pdf) [Complaints process](https://www.pleo.io/legal-documents/pleo-complaint-process-en.pdf) [Anti-Modern Slavery Statement](https://www.pleo.io/legal-documents/anti_modern_slavery_statement.pdf) [Trust & Security](/en/trust-and-security) [Vulnerability Disclosure Policy](/en/vulnerability-disclosure-policy) [Code of Conduct](/en/code-of-conduct) [Whistleblowing Policy](/en/whistleblowing) [LinkedIn](https://www.linkedin.com/company/pleo-company) [Twitter](https://www.twitter.com/pleo) [Facebook](https://www.facebook.com/pleo.io) [Instagram](https://www.instagram.com/pleo.io) [YouTube](https://www.youtube.com/channel/UCQQitvQIlEgIxNyLlOgilXQ) Pleo Technologies A/S (36538686) Ravnsborg Tværgade 5C 2200 København N Danmark Pleo Financial Services UK Ltd is authorised by the Financial Conduct Authority under the Electronic Money Regulations 2011 with firm reference number: 1020730. Pleo Financial Services UK Ltd’s registered office is: 3rd Floor 11 St John Street, Farringdon, London, United Kingdom, EC1M 4AA and company number is: 15842283. Cards are issued pursuant to a license from Mastercard International Incorporated. Mastercard and the Mastercard Brand Mark are registered trademarks of Mastercard International Incorporated. Pleo Technologies A/S (36538686), 2026. All rights reserved. The claim “Europe’s leading business spend solution” is based on the number of customers served by Pleo in Europe compared to similar solutions and according to public information.

pleo.io scored 0/10 on agent-ready. AILANG opportunity is therefore 10/10. Here's where it would land first.

REST + MCP + A2A + OpenAPI in one command

ailang serve-api takes your typed AILANG functions and exposes them as REST endpoints, MCP tools, A2A skills, and OpenAPI 3.1 docs simultaneously. One module, four agent surfaces.

ailang serve-api --port 8092 --mcp-http \
  pricing.ail catalogue.ail
-- POST /api/pricing/quote, MCP at /mcp/,
-- A2A at /.well-known/agent.json, OpenAPI at /api/_meta/redoc.

→ AILANG docs

Contract-verified tool calls

Every tool an agent can call has a contract. Bounds, refusal paths, type signatures — proven before the agent ever sees it. The agent cannot exceed the tool's declared authority.

func placeOrder(item: SKU, qty: int) -> Receipt
  requires { qty > 0, qty <= 10 }
  ensures  { result.total > 0.0 }
-- the MCP server exposes this with its contract intact.

→ AILANG docs

An MCP server for your own docs and tools

Generate an MCP server from your typed AILANG functions; the docs MCP exposes a submit_feedback tool so agents can flag issues back to the maintainer. The language and its consumers stay on the same wire.

-- The AILANG docs MCP server lets Claude / Cursor / any
-- MCP client query the language directly:
--   stdlib_search "URL encoding"
--   submit_feedback "..."

→ AILANG docs

How this page was made

func sketchSite(url: string<pii>, topic: Topic) -> Sketch ! {Net @limit=1, AI @limit=5, FS @limit=4, Process, Declassify}

Read your site once. No second fetch, no crawl.

Up to five AI calls, capped. No runaway analysis.

Four file writes. The report, the topic index, the rubric breakdown, the queue ack. Nothing else touched.

Process invokes docparse for structured extraction. The capability is visible in the type.

Your URL crossed Declassify. No PII survives into this page.

Signal	Topic	Result	Points	AILANG primitive
agent.json referenced	agent-ready	✗	0/1	ailang serve-api generates A2A agent cards automatically — bonus if you're an early adopter
openapi.json referenced	agent-ready	✗	0/2	ailang serve-api generates OpenAPI 3.1 from Hindley-Milner type signatures
MCP endpoint referenced	agent-ready	✗	0/2	ailang serve-api --mcp-http exposes typed functions as MCP tools
Public API docs linked	agent-ready	✓	2/2	ailang serve-api hosts Swagger + ReDoc at /api/_meta/ by default
Webhooks documented	agent-ready	✗	0/2	ailang serve-api handles webhooks as typed handler functions with effect-tracked side effects
Rate limits documented	agent-ready	✗	0/2	Capability budgets — Net @limit=N is the symmetric server-side primitive for what agents see as rate limits
Streaming / SSE endpoint	agent-ready	✗	0/2	std/stream — ssePost and Stream effect handle event-source endpoints with typed event types
Sandbox / test environment offered	agent-ready	✗	0/2	ailang --ai-stub plus mock effect handlers — deterministic, capability-scoped fakes for any effect, including Net and AI
Authentication documented	agent-ready	✗	0/2	std/jwt for verification, IFC labels (string / string) to keep credentials out of public sinks at the type level
Idempotency keys documented	agent-ready	✗	0/2	Pure functions are idempotent by construction; requires/ensures contracts express idempotence as a static guarantee
AG-UI streaming protocol	agent-ready	✗	0/1	std/stream — the AG-UI event lifecycle (RUN_STARTED → TEXT_MESSAGE_CONTENT → TOOL_CALL_RESULT → RUN_FINISHED) is a textbook sum type. ADTs + exhaustive pattern matching make every event-type branch a compile error to skip.
HTTP 402 agent payments (x402 / pay-per-crawl)	agent-ready	✗	0/1	Net @endpoint-scoped capability budgets bound payment destinations; requires { amount <= budget } gates the payload; IFC labels keep the signed payment key out of public sinks. Same primitives cover x402 payload signing and Cloudflare's crawler-price negotiation.
AP2 Agent Payments Protocol	agent-ready	✗	0/1	Mandates ARE contracts. requires { intent.price <= mandate.maxPrice } + ensures { cart.total <= intent.price } is a one-to-one translation of an Intent/Cart Mandate into AILANG. Z3 can verify the bounds at compile time.
UTCP tool-calling protocol	agent-ready	✗	0/1	Typed function signatures are the manifest. ailang serve-api emits the same metadata as a UTCPManual (name, input/output schema, native endpoint) — direct-call discovery without a proxy server.
End-to-end encryption documented	privacy	✗	0/2	IFC labels (string) force decryption to flow through a typed boundary; the compiler refuses to publish sealed values without explicit declassification
Compliance certifications cited	privacy	✓	2/2	requires/ensures contracts express machine-verifiable claims; capability budgets bound audit-trail effects; effect rows leave nothing un-declared
Data minimisation language	privacy	✗	0/2	Capability scoping — each Net call declares its endpoint in the effect row, so "doesn't sell" becomes a type-system-enforceable claim, not a marketing one
Third-party domains restrained	privacy	✗	0/2	Capability scoping — each Net call declares its endpoint in the effect row
Data residency / on-prem language	privacy	✗	0/2	Three-runtime deploy — same module runs in WASM (browser), Cloud Run, and native CLI
Single-vendor LLM language	portable	○	2/2	std/ai multi-provider — switch from Anthropic to Gemini to OpenAI without rewriting
Multiple AI providers cited	portable	✗	0/2	std/ai — one Step API across Anthropic, OpenAI, Gemini, OpenRouter, Ollama, and custom-package providers
Cross-runtime / deployment portability	portable	✗	0/2	Effect handlers as runtime adapters — same .ail runs as WASM in the browser, a Cloud Run container, and a native CLI; only the handlers change
BYO key / model-agnostic	portable	✗	0/2	AILANG WASM — the full interpreter ships as a browser bundle, so caller-held keys (BYOK), offline apps, and embedded demos all work client-side

The rubric that scored this page is open-source AILANG code — every signal extractor is contract-verified. View rubric →

AILANG×pleo.io

pleo.io scored 0/10 on agent-ready.

Businesses and accounting professionals seeking to integrate expense management with their financial and HR systems for improved efficiency.

What AILANG Parse sees on pleo.io

REST + MCP + A2A + OpenAPI in one command

Contract-verified tool calls

An MCP server for your own docs and tools

How this page was made