diff --git a/service/src/database/dips.rs b/service/src/database/dips.rs
new file mode 100644
index 00000000..75f3f5df
--- /dev/null
+++ b/service/src/database/dips.rs
@@ -0,0 +1,44 @@
+// Copyright 2023-, Edge & Node, GraphOps, and Semiotic Labs.
+// SPDX-License-Identifier: Apache-2.0
+
+use std::collections::HashMap;
+
+use axum::async_trait;
+
+use crate::routes::dips::Agreement;
+
+#[async_trait]
+pub trait AgreementStore: Sync + Send {
+    async fn get_by_signature(&self, signature: String) -> anyhow::Result<Option<Agreement>>;
+    async fn create_agreement(
+        &self,
+        signature: String,
+        data: Agreement,
+    ) -> anyhow::Result<Agreement>;
+    async fn cancel_agreement(&self, signature: String) -> anyhow::Result<String>;
+}
+
+pub struct InMemoryAgreementStore {
+    pub data: tokio::sync::RwLock<HashMap<String, Agreement>>,
+}
+
+#[async_trait]
+impl AgreementStore for InMemoryAgreementStore {
+    async fn get_by_signature(&self, signature: String) -> anyhow::Result<Option<Agreement>> {
+        Ok(self.data.try_read()?.get(&signature).cloned())
+    }
+    async fn create_agreement(
+        &self,
+        signature: String,
+        agreement: Agreement,
+    ) -> anyhow::Result<Agreement> {
+        self.data.try_write()?.insert(signature, agreement.clone());
+
+        Ok(agreement)
+    }
+    async fn cancel_agreement(&self, signature: String) -> anyhow::Result<String> {
+        self.data.try_write()?.remove(&signature);
+
+        Ok(signature.clone())
+    }
+}
diff --git a/service/src/database.rs b/service/src/database/mod.rs
similarity index 99%
rename from service/src/database.rs
rename to service/src/database/mod.rs
index ab0cd80e..cf9b0a03 100644
--- a/service/src/database.rs
+++ b/service/src/database/mod.rs
@@ -1,6 +1,8 @@
 // Copyright 2023-, Edge & Node, GraphOps, and Semiotic Labs.
 // SPDX-License-Identifier: Apache-2.0
 
+pub mod dips;
+
 use std::time::Duration;
 use std::{collections::HashSet, str::FromStr};
 
diff --git a/service/src/routes/dips.rs b/service/src/routes/dips.rs
new file mode 100644
index 00000000..3f2a6b18
--- /dev/null
+++ b/service/src/routes/dips.rs
@@ -0,0 +1,121 @@
+// Copyright 2023-, Edge & Node, GraphOps, and Semiotic Labs.
+// SPDX-License-Identifier: Apache-2.0
+
+use std::{str::FromStr, sync::Arc};
+
+use anyhow::bail;
+use async_graphql::{Context, FieldResult, Object, SimpleObject};
+
+use crate::database::dips::AgreementStore;
+
+pub enum NetworkProtocol {
+    ArbitrumMainnet,
+}
+
+impl FromStr for NetworkProtocol {
+    type Err = anyhow::Error;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let p = match s {
+            "arbitrum-mainnet" => NetworkProtocol::ArbitrumMainnet,
+            _ => bail!("unknown network protocol"),
+        };
+
+        Ok(p)
+    }
+}
+
+#[derive(SimpleObject, Debug, Clone)]
+pub struct Agreement {
+    signature: String,
+    data: String,
+    protocol_network: String,
+}
+
+#[derive(SimpleObject, Debug, Clone)]
+pub struct Price {
+    price_per_block: String,
+    chain_id: String,
+    protocol_network: String,
+}
+
+#[derive(Debug)]
+pub struct AgreementQuery {}
+
+#[Object]
+impl AgreementQuery {
+    pub async fn get_agreement<'a>(
+        &self,
+        ctx: &'a Context<'_>,
+        signature: String,
+    ) -> FieldResult<Option<Agreement>> {
+        let store: &Arc<dyn AgreementStore> = ctx.data()?;
+
+        store
+            .get_by_signature(signature)
+            .await
+            .map_err(async_graphql::Error::from)
+    }
+
+    pub async fn get_price<'a>(
+        &self,
+        ctx: &'a Context<'_>,
+        protocol_network: String,
+        chain_id: String,
+    ) -> FieldResult<Option<Price>> {
+        let prices: &Vec<Price> = ctx.data()?;
+
+        let p = prices
+            .iter()
+            .find(|p| p.protocol_network.eq(&protocol_network) && p.chain_id.eq(&chain_id));
+
+        Ok(p.cloned())
+    }
+
+    pub async fn get_all_prices<'a>(&self, ctx: &'a Context<'_>) -> FieldResult<Vec<Price>> {
+        let prices: &Vec<Price> = ctx.data()?;
+
+        Ok(prices.clone())
+    }
+}
+
+#[derive(Debug)]
+pub struct AgreementMutation {}
+
+#[Object]
+impl AgreementMutation {
+    pub async fn create_agreement<'a>(
+        &self,
+        ctx: &'a Context<'_>,
+        signature: String,
+        data: String,
+        protocol_network: String,
+    ) -> FieldResult<Agreement> {
+        let store: &Arc<dyn AgreementStore> = ctx.data()?;
+
+        store
+            .create_agreement(
+                signature.clone(),
+                Agreement {
+                    signature,
+                    data,
+                    protocol_network,
+                },
+            )
+            .await
+            .map_err(async_graphql::Error::from)
+    }
+
+    pub async fn cancel_agreement<'a>(
+        &self,
+        ctx: &'a Context<'_>,
+        signature: String,
+    ) -> FieldResult<String> {
+        let store: &Arc<dyn AgreementStore> = ctx.data()?;
+
+        store
+            .cancel_agreement(signature)
+            .await
+            .map_err(async_graphql::Error::from)
+    }
+}
diff --git a/service/src/routes/mod.rs b/service/src/routes/mod.rs
index 9ac12f8f..e65d13db 100644
--- a/service/src/routes/mod.rs
+++ b/service/src/routes/mod.rs
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 pub mod cost;
+pub mod dips;
 mod status;
 
 pub use status::status;
diff --git a/service/src/service.rs b/service/src/service.rs
index 1203f85c..7253c48b 100644
--- a/service/src/service.rs
+++ b/service/src/service.rs
@@ -1,12 +1,18 @@
 // Copyright 2023-, Edge & Node, GraphOps, and Semiotic Labs.
 // SPDX-License-Identifier: Apache-2.0
 
-use std::sync::Arc;
 use std::time::Duration;
+use std::{collections::HashMap, sync::Arc};
 
 use super::{config::Config, error::SubgraphServiceError, routes};
 use anyhow::anyhow;
-use axum::{async_trait, routing::post, Json, Router};
+use async_graphql::{EmptySubscription, Schema};
+use async_graphql_axum::GraphQL;
+use axum::{
+    async_trait,
+    routing::{post, post_service},
+    Json, Router,
+};
 use indexer_common::indexer_service::http::{
     AttestationOutput, IndexerServiceImpl, IndexerServiceResponse,
 };
@@ -15,8 +21,16 @@ use reqwest::Url;
 use serde_json::{json, Value};
 use sqlx::PgPool;
 use thegraph_core::DeploymentId;
-
-use crate::{cli::Cli, database};
+use tokio::sync::RwLock;
+
+use crate::{
+    cli::Cli,
+    database::{
+        self,
+        dips::{AgreementStore, InMemoryAgreementStore},
+    },
+    routes::dips::Price,
+};
 
 use clap::Parser;
 use indexer_common::indexer_service::http::{
@@ -173,6 +187,20 @@ pub async fn run() -> anyhow::Result<()> {
             .clone(),
     });
 
+    let agreement_store: Arc<dyn AgreementStore> = Arc::new(InMemoryAgreementStore {
+        data: RwLock::new(HashMap::new()),
+    });
+    let prices: Vec<Price> = vec![];
+
+    let schema = Schema::build(
+        routes::dips::AgreementQuery {},
+        routes::dips::AgreementMutation {},
+        EmptySubscription,
+    )
+    .data(agreement_store)
+    .data(prices)
+    .finish();
+
     IndexerService::run(IndexerServiceOptions {
         release,
         config: config.0.clone(),
@@ -181,6 +209,7 @@ pub async fn run() -> anyhow::Result<()> {
         extra_routes: Router::new()
             .route("/cost", post(routes::cost::cost))
             .route("/status", post(routes::status))
+            .route("/dips", post_service(GraphQL::new(schema)))
             .with_state(state),
     })
     .await