AWS Elemental MediaStore
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AI ReadinessFoundational (C+)60/100
Agent-ready OpenAPI document · curated by JenticStorageObject Storagehmac21 EndpointsREST
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For Agents
Provision and govern low-latency MediaStore containers used as origins for live and on-demand media workflows.
Use for: I need to create a MediaStore container for live event ingest, List all MediaStore containers in this region, Attach a container policy that grants read access to a CDN origin role, Configure CORS to allow our domain to fetch HLS segments
Not supported: Does not handle transcoding, packaging, ad insertion, or content delivery - use for low-latency media object storage and container governance only.
Jentic publishes the only available OpenAPI specification for AWS Elemental MediaStore, keeping it validated and agent-ready. MediaStore is a low-latency object store optimized for media workflows - live origin storage, ingest from encoders, and delivery to packagers. Containers are the top-level namespace; each container has a unique data endpoint and supports container policies, CORS policies, lifecycle policies, and metric policies. The service is designed for high-throughput sequential reads and writes typical of streaming workloads rather than archival use cases.
Install Jentic One Beta
Connect the AWS Elemental MediaStore to your agent
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the AWS Elemental MediaStore, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
1
Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Famazonaws.com%2Fmediastore" | sh2
Step 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Famazonaws.com%2Fmediastore" | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
Capabilities
What an agent can do with AWS Elemental MediaStore API.
Create and delete MediaStore containers used as live and VOD media origins
Attach container policies that grant cross-account or signed access to media
Configure CORS policies so browser-based players can fetch segments and manifests
Set lifecycle policies that expire stale segments and recordings automatically
Enable metric policies that publish per-container metrics to CloudWatch
List containers in an account and inspect each container's endpoint and status
Tag containers for cost allocation and access control
Use Cases
Patterns agents use AWS Elemental MediaStore API for, with concrete tasks.
★ Live Streaming Origin Storage
Live broadcasters use MediaStore containers as the origin for streaming segments emitted by encoders such as AWS Elemental MediaLive. Each container exposes a low-latency HTTP endpoint that downstream packagers and CDNs read from in near real time. CORS and container policies control which origins and roles can fetch segments, and lifecycle policies expire stale recordings to keep storage costs flat.
Call CreateContainer with ContainerName='live-event-2026-finals', then PutLifecyclePolicy with a rule that expires objects older than 86400 seconds
Browser Player CORS Configuration
Web video apps that fetch HLS or DASH manifests directly from the MediaStore origin need CORS rules permitting the player's domain. PutCorsPolicy attaches a JSON CORS configuration to the container, listing AllowedOrigins, AllowedMethods, AllowedHeaders, and MaxAgeSeconds. The configuration takes effect immediately, so operators can react to new player domains without redeploying anything.
Call PutCorsPolicy on container 'live-event-2026-finals' with an AllowedOrigins list of ['https://app.example.com'] and AllowedMethods ['GET','HEAD']
Multi-Account Origin Sharing
Larger organizations split production and distribution into separate AWS accounts. PutContainerPolicy attaches an IAM policy directly to a MediaStore container that grants a CDN account or partner role permission to GetObject from the container. This lets the producing team own the storage and the distributing team operate the delivery without sharing credentials.
Call PutContainerPolicy on container 'live-events' with a policy granting mediastore:GetObject to the partner account principal arn:aws:iam::123456789012:role/cdn-origin
AI Agent Storage Operations
Operations agents call MediaStore through Jentic to provision new containers for upcoming events, attach standard CORS and lifecycle policies, and verify state before broadcasts begin. Jentic isolates AWS keys and exposes the container, policy, CORS, and lifecycle operations as discoverable tools, so the agent can answer 'spin up an origin for tomorrow's launch' without learning the AWS SDK.
Search Jentic for 'create a mediastore container', load CreateContainer, and execute it with the event-specific name then chain PutCorsPolicy with the standard player CORS config
Key Endpoints
21 endpoints — jentic publishes the only available openapi specification for aws elemental mediastore, keeping it validated and agent-ready.
METHOD
PATH
DESCRIPTION
POST
/#X-Amz-Target=MediaStore_20170901.CreateContainer
Create a new MediaStore container
POST
/#X-Amz-Target=MediaStore_20170901.DescribeContainer
Describe a container's endpoint and status
POST
/#X-Amz-Target=MediaStore_20170901.PutContainerPolicy
Attach an IAM policy to a container
POST
/#X-Amz-Target=MediaStore_20170901.PutCorsPolicy
Attach a CORS policy to a container
POST
/#X-Amz-Target=MediaStore_20170901.PutLifecyclePolicy
Attach a lifecycle policy to a container
POST
/#X-Amz-Target=MediaStore_20170901.PutMetricPolicy
Attach a CloudWatch metric policy to a container
POST
/#X-Amz-Target=MediaStore_20170901.DeleteContainer
Delete a MediaStore container
POST
/#X-Amz-Target=MediaStore_20170901.CreateContainer
Create a new MediaStore container
POST
/#X-Amz-Target=MediaStore_20170901.DescribeContainer
Describe a container's endpoint and status
POST
/#X-Amz-Target=MediaStore_20170901.PutContainerPolicy
Attach an IAM policy to a container
POST
/#X-Amz-Target=MediaStore_20170901.PutCorsPolicy
Attach a CORS policy to a container
POST
/#X-Amz-Target=MediaStore_20170901.PutLifecyclePolicy
Attach a lifecycle policy to a container
POST
/#X-Amz-Target=MediaStore_20170901.PutMetricPolicy
Attach a CloudWatch metric policy to a container
POST
/#X-Amz-Target=MediaStore_20170901.DeleteContainer
Delete a MediaStore container
Jentic AI Readiness Score
This API is usable in Jentic One now. Its AI-readiness score against Jentic's framework shows where it stands today and where improvements would make it even easier for agents to use.
A
AWS Elemental MediaStore
- Foundational (C+)60/100
99
Foundational Compliance63
Developer Experience & Jentic Compatibility36
AI-Readiness & Agent Experience94
Agent Usability50
Security100
AI DiscoverabilityPowered by JenticScoring Framework 1.0.0 | Scoring Engine 0.4.0
Show dimension breakdown
99
Foundational Compliance
Base layer of spec validity and structural soundness.
Grade: A+Signals: 4
97%
Lint Results
Aggregated quality score from linter diagnostics, weighted by severity.
100%
Resolution Completeness
Percentage of `$ref` references that resolve successfully.
100%
Specification Validity
Checks whether the API description parses successfully and conforms to its declared specification (e.g., OpenAPI).
100%
Structural Integrity
Structural correctness score based on schema issues using logarithmic dampening.
63
Developer Experience & Jentic Compatibility
Clarity, completeness, and ingestion readiness for developers and tooling.
Grade: B-Signals: 4
0%
Example Density
How richly the API is illustrated with examples.
100%
Example Validity
Percentage of examples that conform to their schemas.
50%
Response Coverage
Percentage of operations with complete response definitions (success, client error, server error).
100%
Tooling Readiness
Health of API ingestion, bundling, and resolution within Jentic pipelines.
36
AI-Readiness & Agent Experience
Semantic breadth, depth, and agent comprehension for AI systems.
Grade: FSignals: 4
44%
Description Coverage
Coverage of descriptions across API elements.
0%
Error Standardization
Coverage of RFC 9457 Problem Details for error responses.
100%
OperationId Quality
Coverage, uniqueness, and casing consistency of operationIds for AI inference.
0%
Summary Coverage
Coverage of summaries across operations/tags/info.
94
Agent Usability
Functional utility, complexity comfort, and AI orchestration readiness.
Grade: A+Signals: 1
94%
Complexity Comfort
Agent comfort level based on API operational and structural complexity.
50
Security
Trust, risk posture, and security compliance.
Grade: C-Signals: 1
50%
Authentication Strength
Average quality of security schemes based on authentication method strength (weakest link for OAuth2).
100
AI Discoverability
Findability, semantic richness, and reasoning readiness.
Grade: A+Signals: 1
100%
Descriptive Richness
Clarity and depth of descriptions across API elements.
Score it yourself
Every API in the directory is allowlisted, so you can re-score it with no key required.
npx @jentic/api-scorecard-cli score <openapi-url>Why Jentic?
What agents get from Jentic-routed access to this vendor.
Setup
Wiring AWS Elemental MediaStore by hand means implementing Signature Version 4 signing, resolving the regional mediastore host, and building the X-Amz-Target action headers yourself. Through Jentic you install once, import MediaStore from the API Directory, store the AWS keys once, and your agent calls it.
Permission scoping
MediaStore is a JSON action API where the container name travels in the request body, so scope the agent to the operations it needs, such as CreateContainer and DescribeContainer. You choose the operations it may call, so ones like DeleteContainer are not included unless you add them.
Credential isolation
Your AWS access keys are stored once, encrypted, by your own Jentic One instance and each request is signed with Signature Version 4 at execution time. They never enter the agent's prompt, logs, or context.
Intent-based discovery
Agents search Jentic by intent such as 'create a mediastore container' or 'attach a cors policy', and Jentic returns the matching MediaStore operation with its input schema, including the JSON shape expected by container, CORS, and lifecycle policy fields, so the agent calls the right endpoint without browsing the reference docs.
Related APIs
Alternatives and complements available in the Jentic catalogue.
FAQs
Specific to using AWS Elemental MediaStore API through Jentic.
Why is there no official OpenAPI spec for AWS Elemental MediaStore?
AWS does not publish an OpenAPI specification. Jentic generates and maintains this spec so that AI agents and developers can call AWS Elemental MediaStore via structured tooling. It is validated against the live API and kept up to date. Get started with Jentic One, the self-hosted execution layer.
What authentication does the MediaStore API use?
MediaStore control-plane operations use AWS Signature Version 4 (HMAC) with an access key ID and secret access key scoped via IAM. Object-level operations against the container's data endpoint are signed the same way. Through Jentic, those keys live in the encrypted vault and Jentic signs each request server-side.
Can I attach a CORS policy with the MediaStore API?
Yes. Call PutCorsPolicy with a CorsPolicy array specifying AllowedOrigins, AllowedMethods, AllowedHeaders, MaxAgeSeconds, and ExposeHeaders. GetCorsPolicy returns the current configuration, and DeleteCorsPolicy removes it. Changes take effect immediately for new requests.
What are the rate limits for the MediaStore API?
AWS does not document explicit per-second control-plane limits in this spec. Per-container request limits exist on the data endpoint and scale with usage; the service is sized for live streaming throughput. See the AWS service quotas console for region-specific values.
How do I create a container and attach a policy through Jentic?
Search Jentic for 'create a mediastore container' to surface CreateContainer. Load the schema with the Jentic SDK (pip install jentic), execute it with the desired ContainerName, then chain PutContainerPolicy with the JSON policy granting the consuming role mediastore:GetObject.
Is AWS Elemental MediaStore free?
No. MediaStore charges per GB stored per month and per HTTP request, with separate rates for PUT, GET, and DELETE operations. There is no free tier - see the AWS MediaStore pricing page for current rates by region.
Can I limit what my agent is allowed to do with the AWS Elemental MediaStore API?
Yes. Because MediaStore is a JSON action API where the container name travels in the request body, your self-hosted Jentic One instance lets you decide exactly which operations the agent may call. You can scope it to only what it needs, such as CreateContainer and DescribeContainer, and leave out destructive operations like DeleteContainer unless you explicitly add them. Your own rules govern which operations and AWS credentials the agent uses, so it can provision and inspect containers without being able to reach the operations you withheld.
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