Connectors · Accounting & finance

Navan MCP server for AI agents.

actionlake is an MCP gateway: one remote MCP server that connects Claude and other MCP clients to Navan and the rest of your systems. It gives your agent 36 Navan actions (25 reads, 9 writes and 2 that wait for a confirmation) and holds the Navan credential itself, so the agent never does. It paces Navan's limits and records every call.

Connect Navan free See pricing

100,000 free calls a month. No card, no email, no password: press Start a free sandbox on the next screen and keep the key it shows you.

claude mcp add --transport http actionlake https://connect.actionlake.com/mcp

36actionsin one signed file
25readlook, never change
9writecreate and update
2wait for a yesdestructive, confirmed first

Set up

Connect Navan in three steps.

01
Add actionlake to Claude.
Run the command once in Claude Code; its consent page can create a free sandbox: 100,000 calls a month, no card. In the Claude app, add a custom connector with the URL below and paste your key on the consent page. Creating a new sandbox from the Claude app is not yet tested by us.
https://connect.actionlake.com/mcp
02
Connect Navan.
OAuth 2.0, client credentials. Paste the app's client id and secret; actionlake fetches and renews the token, and nobody has to sign in. actionlake stores what you paste write-only, sealed under your tenant's key.
- client_idNavan API client ID (Navan Admin > Integrations > API credentials)
- client_secretNavan API client secret
- ta_regionYour Navan ta region
```
account { op: "connections.requirements", service: "navan" }
# free: exactly what to paste, and what is found for you
```

Make the first call. Check before a write.

Ask in plain words; Claude picks the action. Before anything changes, check validates the call and prices it, for free.

do    { action: "navan.users.list" }# list users · read · 1 upstream callcheck { action: "navan.transactions.update", input: { … } }# free: inputs, permissions, cost and confirmations, nothing sent

Navan at a glance

Sign-in: OAuth 2.0, client credentials. Paste the app's client id and secret; actionlake fetches and renews the token, and nobody has to sign in.
You provide: client_idclient_secret
Setup fields: ta_region
Limits we pace to: 5 calls a second, per connection
API covered: Navan Expense API v1api.navan.com/v1/expense
Built from: Navan's documentation, read 23 October 2026docs.navan.com
Service file: Version 1.0.0, signed (Ed25519)
Cached reads: 22 of 25 reads, for up to 10 minutes; a write clears what it affects
Shared entities: 2, so ask can line Navan up with your other systems
Data: Processed and stored in Sydney, Australia. No US region yet

Capabilities

What an AI agent can do in Navan.

36 actions in 21 areas. Every one carries its effect, so a key can allow the reads and hold the rest.

25readlook, never change
9writecreate and update
2destructivewait for a confirmation

Tax mappings
6
2 read · 3 write · 1 destructive
List tax mappings · Activate staged tax mappings · Get a tax mapping by tax code · Discard staged tax mappings
GL codes
4
2 read · 2 write · 0 destructive
List GL codes · Get a GL code · Create or update GL codes · Update a GL code
Transactions
3
2 read · 1 write · 0 destructive
List transactions of any type · Get a transaction · Update transactions
Custom fields
2
2 read · 0 write · 0 destructive
List custom fields · Get a custom field
GL code exclusions
2
0 read · 1 write · 1 destructive
Add a GL code exclusion · Remove a GL code exclusion
GL code settings
2
1 read · 1 write · 0 destructive
Get GL code settings · Update GL code settings
Transaction receipts
2
2 read · 0 write · 0 destructive
List receipt links by date · Get a transaction's receipt links
Users
2
2 read · 0 write · 0 destructive
List users · Get a user

13 more areas · 13 actions

Activities 1
Adjustments 1
Audit logs 1
Card transactions 1
Connect transactions 1
Custom field jobs 1
Custom field options 1
Daily rebates 1
Disputes 1
Fees 1
Manual transactions 1
Repayments 1
Statement payments 1

Top actions

The Navan API, shaped for agents.

The ids your agent types, what each does, and the one name it shares with other systems. 5 of Navan's 5 action names are shared with at least one other connector, so an agent learns them once.

Action	What it does	Effect	Same name in
`navan.users.list`List users	List users.	read	`identity.user.list`474 connectors
`navan.card_transactions.list`List Navan card transactions	List Navan card transactions.	read	`finance.expense.list`40 connectors
`navan.transactions.list`List transactions of any type	List transactions of any type.	read	`finance.expense.list`40 connectors
`navan.users.get`Get a user	Get a user.	read	`identity.user.get`399 connectors
`navan.transactions.update`Update transactions	Update transactions.	write	`finance.expense.update`37 connectors
`navan.fees.list`List fees	List fees.	read	this connector
`navan.disputes.list`List disputes	List disputes.	read	this connector
`navan.gl_codes.list`List GL codes	List GL codes.	read	this connector
`navan.activities.list`List a transaction's activity	List a transaction's activity.	read	this connector
`navan.gl_code_exclusions.create`Add a GL code exclusion	Add a GL code exclusion.	write	this connector
`navan.tax_mappings.confirm`Activate staged tax mappings	Activate staged tax mappings.	write	this connector
`navan.gl_code_exclusions.delete`Remove a GL code exclusion	Remove a GL code exclusion.	destructive	this connector

Try it

Prompts to paste into Claude.

Each one names the Navan actions it will call, so you know what it reads and what it changes before you send it.

Readread
Who has access in Navan? List every user and their role.
callsnavan.users.list
Writewrite
Update transactions in Navan. Show me exactly what you will send before you save it.
callsnavan.transactions.update

Governance for Navan

Destructive actions wait for a yes.

2 Navan actions are destructive. These are all of them:

Remove a GL code exclusionnavan.gl_code_exclusions.delete
Discard staged tax mappingsnavan.tax_mappings.discard_pending

A destructive action runs only with confirm: true. Under the human policy the agent cannot confirm for itself: the run stops until a named person approves, in the console or from a signed link in an email. The cap on a key is refused before the call is sent, never after.

donavan.gl_code_exclusions.deleteconfirm_policy: human

Remove a GL code exclusion?

intent: the user asked me to remove a GL code exclusion

run suspended · waiting for a named person · key navan-agent cannot confirm itself

In the console, or from an emailed signed link.

a key for this connector

account {  op: "keys.create", name: "navan-agent",  allowed_actions: ["navan.*"], cap_calls: 2000,  confirm_policy: "human_for_writes",  approval_rules: [    { match: "navan.gl_code_exclusions.delete", approver: "[email protected]" },    { match: "navan.tax_mappings.discard_pending", approver: "[email protected]" }  ]}

Illustrative. Scoped to Navan only, capped at 2,000 upstream calls, every write confirmed, and the destructive ones approved by a named person.

Cost

What Navan costs on actionlake.

Every Navan action is one upstream call, the only thing actionlake bills. Searching, check, cost, account and any call Navan refused with 401, 403, 429 or a 5xx are free. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

1upstream call per actionall 36 Navan actions
36actions pageeach page of a long list is one call
22reads can be cacheda cache hit costs nothing
100,000calls a month, freepaid plans from US$49 a month for 250,000

See pricing

Action index

Every Navan action.

36 actions by area: the id your agent calls, what it does, and its effect.

Tax mappings6

navan.tax_mappings.confirmActivate staged tax mappingswrite
navan.tax_mappings.discard_pendingDiscard staged tax mappingsdestructive
navan.tax_mappings.getGet a tax mapping by tax coderead
navan.tax_mappings.listList tax mappingsread
navan.tax_mappings.stageStage tax mapping changeswrite
navan.tax_mappings.updateUpdate a tax mapping by tax codewrite

GL codes4

navan.gl_codes.getGet a GL coderead
navan.gl_codes.listList GL codesread
navan.gl_codes.putCreate or update GL codeswrite
navan.gl_codes.updateUpdate a GL codewrite

Transactions3

navan.transactions.getGet a transactionread
navan.transactions.listList transactions of any typeread
navan.transactions.updateUpdate transactionswrite

Custom fields2

navan.custom_fields.getGet a custom fieldread
navan.custom_fields.listList custom fieldsread

GL code exclusions2

navan.gl_code_exclusions.createAdd a GL code exclusionwrite
navan.gl_code_exclusions.deleteRemove a GL code exclusiondestructive

GL code settings2

navan.gl_code_settings.getGet GL code settingsread
navan.gl_code_settings.updateUpdate GL code settingswrite

Transaction receipts2

navan.transaction_receipts.getGet a transaction's receipt linksread
navan.transaction_receipts.listList receipt links by dateread

Users2

navan.users.getGet a userread
navan.users.listList usersread

Activities1

navan.activities.listList a transaction's activityread

Adjustments1

navan.adjustments.listList adjustmentsread

Audit logs1

navan.audit_logs.listList accounting audit logsread

Card transactions1

navan.card_transactions.listList Navan card transactionsread

Connect transactions1

navan.connect_transactions.listList Connect card transactionsread

Custom field jobs1

navan.custom_field_jobs.getGet a custom field options jobread

Custom field options1

navan.custom_field_options.batchBatch-manage custom field optionswrite

Daily rebates1

navan.daily_rebates.listList daily rebatesread

Disputes1

navan.disputes.listList disputesread

Fees1

navan.fees.listList feesread

Manual transactions1

navan.manual_transactions.listList manual transactionsread

Repayments1

navan.repayments.listList repaymentsread

Statement payments1

navan.statement_payments.listList statement paymentsread

Questions

The Navan MCP server, answered.

Is there a Navan MCP server for Claude?

Yes. actionlake is an MCP gateway: a remote MCP server that gives Claude, or another MCP client, 36 Navan actions across tax mappings, GL codes, transactions and custom fields, through the same eight tools it uses for every other connector. actionlake is independent; it is not made or endorsed by Navan.

What do I need to connect Navan?

Navan API client ID (Navan Admin > Integrations > API credentials) and Navan API client secret. Plus your ta region. The free call account { op: "connections.requirements", service: "navan" } lists exactly what to paste.

Can an AI agent delete or change things in Navan?

Only if its key allows it, and only with an explicit confirmation. 2 Navan actions are destructive, including remove a GL code exclusion and discard staged tax mappings. Each runs only with confirm: true. Under the human confirm policy, or an approval rule on the key, the run waits until a named person approves it.

Will an AI agent use up my Navan API limit?

actionlake paces every call to the limits in the Navan service file: 5 calls a second per connection. Repeated reads are answered from cache (22 Navan actions can be), which never reaches Navan.

What does a Navan action cost?

One upstream call, the only unit actionlake bills. A list that pages bills one call per page (36 Navan actions page). Cache hits, searches, dry runs and calls Navan refused with 401, 403, 429 or a 5xx are free. The Free plan includes 100,000 calls a month with no card. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

Which Navan API does it cover?

The Navan Expense API v1 at api.navan.com/v1/expense. It is built from Navan's documentation as read on 23 October 2026. 36 actions in 21 areas, each one in the signed service file (version 1.0.0).

Does actionlake keep my Navan data, and where?

actionlake processes and stores data in Sydney, Australia; there is no US region yet. Reads may be cached for up to 10 minutes, and a write clears the reads it affects. Each run's request and response is kept, sealed, for your plan's trace window: 1 day on Free, 3 days on Starter, 7 days on Pro, 14 days on Team, 30 days on Business and 30 days on Enterprise. Your Navan credential is sealed under your tenant's key, never logged and never returned. Your traffic is not used to train models.

Which AI clients can use it?

Claude Code, tested by us end to end, and the Claude app as a custom connector, tested by us with an existing key. Other MCP clients that support remote servers over Streamable HTTP (MCP revisions 2025-06-18 and 2025-11-25) and OAuth dynamic client registration, or a bearer header, should connect the same way; we have not tested them. Or plain REST, under the same action names.

Give your agent Navan today.

Connect Navan free See pricing

Start free - 100,000 calls/month, no card. No signup. Hard caps on every key. Cached answers are free.

Navan MCP server for AI agents.

Connect Navan in three steps.

Add actionlake to Claude.

Connect Navan.

Make the first call. Check before a write.

What an AI agent can do in Navan.

Tax mappings

GL codes

Transactions

Custom fields

GL code exclusions

GL code settings

Transaction receipts

Users