MBTiles and PMTiles File Sources

Martin can serve any type of tiles from PMTile and MBTile files. To serve a file from CLI, simply put the path to the file or the directory with *.mbtiles or *.pmtiles files. A path to PMTiles file may be a URL. For example:

martin  /path/to/mbtiles/file.mbtiles  /path/to/directory   https://example.org/path/tiles.pmtiles

You may also want to generate a config file using the --save-config my-config.yaml, and later edit it and use it with --config my-config.yaml option.

tip

See our tile sources explanation for a more detailed explanation on the difference between our available data sources.

Autodiscovery

For mbtiles or local pmtiles files, we support auto discovering at startup. This means that the following will discover all mbtiles and pmtiles files in the directory:

martin  /path/to/directory

warning

For remote PMTiles, we don’t currently support auto-discovery. If you want to implement this feature, please see https://github.com/maplibre/martin/issues/2180

We also don’t currently support refreshing the catalog at runtime. If you want to implement this feature, please see https://github.com/maplibre/martin/issues/288 instead.

Serving PMTiles from local file systems, http or Object Storage

The settings avaliable for a PMTiles source depend on the backend:

For local sources, you need to provide the path or URL. For example:

martin  path/to/tiles.pmtiles

The available schemes are:

file:///path/to/my/file.pmtiles
path/to/my/file.pmtiles

You can also configure this via the configuration file:

pmtiles:
  sources:
    tiles: file:///path/to/my/file.pmtiles

For HTTP(s), you need to provide the url. For example:

martin  https://example.com/tiles.pmtiles

The available url schemes are:

http://example.com/path.pmtiles
https://example.com/path.pmtiles

If you want more control over your requests, you can configure additional options here as such:

pmtiles:
  allow_http: true
  sources:
    tiles: s3://bucket/path/to/tiles.pmtiles

Available http client settings

Security options

configuration	description	example
`allow_http`	Allow non-TLS, i.e. non-HTTPS connections Security warning: If you enable this option, attackers may be able to read the data you request	`true`
`allow_invalid_certificates`	Skip certificate validation on https connections Security warning: You should think very carefully before using this method. If invalid certificates are trusted, any certificate for any site will be trusted for use. This includes expired certificates. This introduces significant vulnerabilities, and should only be used as a last resort or for testing	`true`

Connection options

configuration	description	example
`user_agent`	User-Agent header to be used by this client	`martin 1.0.0`
`randomize_addresses`	Randomize order addresses that the DNS resolution yields. This will spread the connections across more servers.	`true`
`connect_timeout`	Timeout for only the connect phase of a Client	`5s`
`timeout`	The timeout is applied from when the request starts connecting until the response body has finished	`10s`
`pool_idle_timeout`	The pool max idle timeout	`5m`
`pool_max_idle_per_host`	maximum number of idle connections per host	`10`
`http1_only`	Only use http1 connections	`false`
`http2_only`	Only use http2 connections	`false`
`http2_keep_alive_interval`	Interval for HTTP2 Ping frames should be sent to keep a connection alive.	`15s`
`http2_keep_alive_timeout`	Timeout for receiving an acknowledgement of the keep-alive ping.	`15s`
`http2_keep_alive_while_idle`	Enable HTTP2 keep alive pings for idle connections	`true`
`http2_max_frame_size`	Sets the maximum frame size to use for HTTP2.

Proxy settings

configuration	description	example
`proxy_url`	HTTP proxy to use for requests	`http://proxy.example.com:8080`
`proxy_ca_certificate`	PEM-formatted CA certificate for proxy connections	`-----BEGIN CERTIFICATE-----` … `-----END CERTIFICATE-----`
`proxy_excludes`	List of hosts that bypass proxy	`example.com`, `maplibre.org`

important

Even though we name this section Amazon S3, it also works with other providers that support the S3 API, such as MinIO, Ceph, Cloudflare R2, hetzner object storage and many more.

For AWS, you need to provide the bucket name and the prefix of the object key. For example:

martin  s3://my-bucket/tiles.pmtiles

The available url schemes are:

s3://bucket/path
s3a://bucket/path

If you want more control over your requests, you can configure additional options here as such:

pmtiles:
  allow_http: true
  sources:
    tiles: s3://bucket/path/to/tiles.pmtiles

tip

All settings are also available under the aws_ prefix. This can be useful if you want to have different cloud providers.

Available AWS S3 settings

AWS specific Authentication & Credentials

configuration	description	example
`access_key_id`	AWS Access Key	`AKIAIOSFODNN7EXAMPLE`
`secret_access_key`	Secret Access Key	`wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY`
`session_token` `token`	AWS session token used for temporary credentials	`IQoJb3JpZ2luX2VjEOr...`
`web_identity_token_file`	Web identity token file path for AssumeRoleWithWebIdentity	`/var/run/secrets/eks.amazonaws.com/serviceaccount/token`
`role_arn`	Role ARN to assume with web identity token	`arn:aws:iam::123456789012:role/MyWebIdentityRole`
`role_session_name`	Session name for web identity assumption	`my-session`
`endpoint_url_sts`	Custom STS endpoint for web identity token exchange	`https://sts.amazonaws.com`

AWS specific Connection & Endpoint Configuration

configuration	description	example
`region`	AWS region Defaults to `us-east-1`	`us-west-2`
`bucket` `bucket_name`	Bucket name	`my-app-bucket`
`endpoint` `endpoint_url`	Custom S3 endpoint Defaults to regional endpoint Ensure consistency with `virtual_hosted_style_request` By default, only HTTPS schemes are enabled; enabling HTTP can expose sensitive data Local testing example: `"http://localhost:4566"`	`https://s3.us-west-2.amazonaws.com`
`metadata_endpoint`	Instance metadata endpoint (IPv4 default `http://169.254.169.254`) IPv6 alternative: `http://fd00:ec2::254`	`http://169.254.169.254`
`container_credentials_relative_uri`	ECS container credentials relative URI	`/v2/credentials/12345678-1234-1234-1234-123456789012`
`container_credentials_full_uri`	EKS container credentials full URI	`http://169.254.170.2/v2/credentials/abc123`
`container_authorization_token_file`	Authorization token file for EKS container creds	`/var/run/secrets/eks.amazonaws.com/serviceaccount/token`

AWS specific Request Behavior & Fallbacks

configuration	description	example
`imdsv1_fallback`	Fall back to IMDSv1 if IMDSv2 is not supported (useful for older kube2iam deployments) Security note: AWS recommends IMDSv2 only; IMDSv1 is vulnerable to SSRF attacks Has no effect if not using instance credentials	`true`
`virtual_hosted_style_request`	Use virtual-hosted-style requests instead of path-style Endpoint must match the style Ensures correct bucket addressing for security and routing	`true`
`skip_signature`	Skip signing request Security warning: Unsigned requests may expose credentials or allow tampering if endpoint is public	`true`
`unsigned_payload`	Use unsigned payload option (`UNSIGNED-PAYLOAD`) instead of signed Impact: Checksums for request body are not computed in canonical requests, which can reduce integrity guarantees Default is signed payload with checksum	`true`
`disable_tagging`	Disable tagging objects (useful if unsupported by backend)	`true`
`s3_express`	Enable S3 Express One Zone	`true`
`request_payer`	Enable S3 Requester Pays	`true`

AWS Specific Object Integrity & Encryption

configuration	description	example
`checksum`	Checksum algorithm for uploads	`SHA256`
`server_side_encryption`	Type of server-side encryption: `AES256` (SSE-S3) `aws:kms` (SSE-KMS) `aws:kms:dsse` (DSSE-KMS) `sse-c`	`AES256`
`kms_key_id`	KMS Key ID for SSE-KMS or DSSE-KMS	`arn:aws:kms:us-east-1:123456789012:key/abcd-1234-efgh-5678`
`bucket_key_enabled`	Use bucket’s default KMS key (`true`/`false`)	`true`
`customer_encryption_key`	Base64-encoded 256-bit key for SSE-C	`MDEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkNERUY=`

Security options

configuration	description	example
`allow_http`	Allow non-TLS, i.e. non-HTTPS connections Security warning: If you enable this option, attackers may be able to read the data you request	`true`
`allow_invalid_certificates`	Skip certificate validation on https connections Security warning: You should think very carefully before using this method. If invalid certificates are trusted, any certificate for any site will be trusted for use. This includes expired certificates. This introduces significant vulnerabilities, and should only be used as a last resort or for testing	`true`

Connection options

configuration	description	example
`user_agent`	User-Agent header to be used by this client	`martin 1.0.0`
`randomize_addresses`	Randomize order addresses that the DNS resolution yields. This will spread the connections across more servers.	`true`
`connect_timeout`	Timeout for only the connect phase of a Client	`5s`
`timeout`	The timeout is applied from when the request starts connecting until the response body has finished	`10s`
`pool_idle_timeout`	The pool max idle timeout	`5m`
`pool_max_idle_per_host`	maximum number of idle connections per host	`10`
`http1_only`	Only use http1 connections	`false`
`http2_only`	Only use http2 connections	`false`
`http2_keep_alive_interval`	Interval for HTTP2 Ping frames should be sent to keep a connection alive.	`15s`
`http2_keep_alive_timeout`	Timeout for receiving an acknowledgement of the keep-alive ping.	`15s`
`http2_keep_alive_while_idle`	Enable HTTP2 keep alive pings for idle connections	`true`
`http2_max_frame_size`	Sets the maximum frame size to use for HTTP2.

Proxy settings

configuration	description	example
`proxy_url`	HTTP proxy to use for requests	`http://proxy.example.com:8080`
`proxy_ca_certificate`	PEM-formatted CA certificate for proxy connections	`-----BEGIN CERTIFICATE-----` … `-----END CERTIFICATE-----`
`proxy_excludes`	List of hosts that bypass proxy	`example.com`, `maplibre.org`

For Google Cloud, you need to provide the bucket name and the prefix of the object key. For example:

martin  gs://my-bucket/tiles.pmtiles

The available url scheme is:

gs://bucket/path

If you want more control over your requests, you can configure additional options here as such:

pmtiles:
  allow_http: true
  sources:
    tiles: gs://bucket/path/to/tiles.pmtiles

tip

All settings are also available under the google_ prefix. This can be useful if you want to have different cloud providers.

Available google settings

Google specific configuration

configuration	description	example
`service_account` `service_account_path`	Path to the service account file	`some/path/to/file`
`service_account_key`	The serialized service account key	`{"private_key": "private_key", "private_key_id": "private_key_id", "client_email":"client_email", "disable_oauth":true}`
`bucket` `bucket_name`	Bucket name	`foobar-abc`
`application_credentials`	Set the path to the application credentials file	`some/path/to/file`
`skip_signature`	Skip signing request	`true`

Security options

configuration	description	example
`allow_http`	Allow non-TLS, i.e. non-HTTPS connections Security warning: If you enable this option, attackers may be able to read the data you request	`true`
`allow_invalid_certificates`	Skip certificate validation on https connections Security warning: You should think very carefully before using this method. If invalid certificates are trusted, any certificate for any site will be trusted for use. This includes expired certificates. This introduces significant vulnerabilities, and should only be used as a last resort or for testing	`true`

Connection options

configuration	description	example
`user_agent`	User-Agent header to be used by this client	`martin 1.0.0`
`randomize_addresses`	Randomize order addresses that the DNS resolution yields. This will spread the connections across more servers.	`true`
`connect_timeout`	Timeout for only the connect phase of a Client	`5s`
`timeout`	The timeout is applied from when the request starts connecting until the response body has finished	`10s`
`pool_idle_timeout`	The pool max idle timeout	`5m`
`pool_max_idle_per_host`	maximum number of idle connections per host	`10`
`http1_only`	Only use http1 connections	`false`
`http2_only`	Only use http2 connections	`false`
`http2_keep_alive_interval`	Interval for HTTP2 Ping frames should be sent to keep a connection alive.	`15s`
`http2_keep_alive_timeout`	Timeout for receiving an acknowledgement of the keep-alive ping.	`15s`
`http2_keep_alive_while_idle`	Enable HTTP2 keep alive pings for idle connections	`true`
`http2_max_frame_size`	Sets the maximum frame size to use for HTTP2.

Proxy settings

configuration	description	example
`proxy_url`	HTTP proxy to use for requests	`http://proxy.example.com:8080`
`proxy_ca_certificate`	PEM-formatted CA certificate for proxy connections	`-----BEGIN CERTIFICATE-----` … `-----END CERTIFICATE-----`
`proxy_excludes`	List of hosts that bypass proxy	`example.com`, `maplibre.org`

For Azure, you need to provide the account name, container and path. For example:

martin  az://account/container.pmtiles

The available url schemes are:

az://account/container/path.pmtiles
adl://account/container/path.pmtiles
azure://account/container/path.pmtiles
abfs://account/container/path.pmtiles
abfss://account/container/path.pmtiles

If you want more control over your requests, you can configure additional options here as such:

pmtiles:
  allow_http: true
  sources:
    tiles: az://account/container/path.pmtiles

tip

All settings are also available under the azure_ prefix. This can be useful if you want to have different cloud providers.

Available azure settings

Azure specific Authentication & Credentials

configuration	description	example
`account_name`	Name of the Azure Storage account	`myaccount`
`access_key` `account_key` `master_key`	Master key for accessing the storage account Security note: Keep this key secret; anyone with access can read/write all data in the account	`abcd1234efgh5678ijkl9012mnop3456qrst7890uvwx1234yzab5678cdef9012`
`client_id`	Service principal client ID for OAuth authorization	`12345678-90ab-cdef-1234-567890abcdef`
`client_secret`	Service principal client secret for OAuth authorization Security note: Must be kept confidential	`s3cr3tV@lu3!`
`tenant_id` `authority_id`	Tenant ID used in OAuth flows	`abcdef12-3456-7890-abcd-ef1234567890`
`authority_host`	Authority host used in OAuth flows	`https://login.microsoftonline.com/`
`sas_key` `sas_token`	Shared Access Signature (percent-encoded) Security note: Grants scoped access; treat as sensitive credentials	`sv=2021-06-08&ss=b&srt=sco&sp=rwdl` `&se=2025-12-31T23:59:00Z&sig=ABCDEF1234567890`
`bearer_token` `token`	Bearer token for requests Security note: Token must be protected; use HTTPS	`eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...`
`identity_endpoint` `msi_endpoint`	Endpoint to request a managed identity token	`http://169.254.169.254/metadata/identity/oauth2/token`
`object_id`	Object ID for use with managed identity authentication	`12345678-90ab-cdef-1234-567890abcdef`
`msi_resource_id`	Resource ID for managed identity authentication	`/subscriptions/12345678-90ab-cdef-1234-567890abcdef/` `resourcegroups/myrg/providers/Microsoft.ManagedIdentity/` `userAssignedIdentities/myidentity`
`federated_token_file`	File containing token for Azure AD workload identity federation	`/var/run/secrets/azure/federated-token`
`use_azure_cli`	Use Azure CLI for acquiring access token	`true`

Azure specific Connection & Endpoint Configuration

configuration	description	example
`endpoint`	Override endpoint used to communicate with blob storage	`https://myaccount.blob.core.windows.net`
`object_store_use_emulator` `use_emulator`	Use Azurite storage emulator	`true`
`use_fabric_endpoint`	Use Azure Fabric endpoint (account.dfs.fabric.microsoft.com)	`true`
`container_name`	Container name in the storage account	`mycontainer`

Azure specific Request Behavior & Security Options

configuration	description	example
`skip_signature`	Skip signing requests Security warning: Unsigned requests may expose sensitive data or allow tampering; use only in secure or local environments	`true`
`disable_tagging`	Disable object tagging (useful if backend does not support it)	`true`
`fabric_token_service_url`	URL of Fabric token service	`https://fabric-token.mycompany.com`
`fabric_workload_host`	Host for Fabric workload	`https://workload.fabric.mycompany.com`
`fabric_session_token`	Session token for Fabric Security note: Must be protected; use HTTPS	`eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...`
`fabric_cluster_identifier`	Identifier for Fabric cluster	`fabric-cluster-01`

Security options

configuration	description	example
`allow_http`	Allow non-TLS, i.e. non-HTTPS connections Security warning: If you enable this option, attackers may be able to read the data you request	`true`
`allow_invalid_certificates`	Skip certificate validation on https connections Security warning: You should think very carefully before using this method. If invalid certificates are trusted, any certificate for any site will be trusted for use. This includes expired certificates. This introduces significant vulnerabilities, and should only be used as a last resort or for testing	`true`

Connection options

configuration	description	example
`user_agent`	User-Agent header to be used by this client	`martin 1.0.0`
`randomize_addresses`	Randomize order addresses that the DNS resolution yields. This will spread the connections across more servers.	`true`
`connect_timeout`	Timeout for only the connect phase of a Client	`5s`
`timeout`	The timeout is applied from when the request starts connecting until the response body has finished	`10s`
`pool_idle_timeout`	The pool max idle timeout	`5m`
`pool_max_idle_per_host`	maximum number of idle connections per host	`10`
`http1_only`	Only use http1 connections	`false`
`http2_only`	Only use http2 connections	`false`
`http2_keep_alive_interval`	Interval for HTTP2 Ping frames should be sent to keep a connection alive.	`15s`
`http2_keep_alive_timeout`	Timeout for receiving an acknowledgement of the keep-alive ping.	`15s`
`http2_keep_alive_while_idle`	Enable HTTP2 keep alive pings for idle connections	`true`
`http2_max_frame_size`	Sets the maximum frame size to use for HTTP2.

Proxy settings

configuration	description	example
`proxy_url`	HTTP proxy to use for requests	`http://proxy.example.com:8080`
`proxy_ca_certificate`	PEM-formatted CA certificate for proxy connections	`-----BEGIN CERTIFICATE-----` … `-----END CERTIFICATE-----`
`proxy_excludes`	List of hosts that bypass proxy	`example.com`, `maplibre.org`

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