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Forest Containers – OCI Tag Digest Resolver
x402
Forest Containers – OCI Tag Digest Resolver is a paid API for AI agents from http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).
Resolves a mutable OCI image tag to its current immutable content digest using the Distribution manifest API, without asserting signature or vulnerability status.
Price / call$0.002
Success—
StatusUnknown
How this service works
Resolve a mutable OCI tag to an immutable content digest using bounded Distribution manifest metadata. It does not assert signature or vulnerability status. Base mainnet USDC
Output
Returns the immutable sha256 content digest corresponding to the specified tag at the time of the query, resolved via the OCI Distribution manifest API. Does not include vulnerability scan results, signature validation, or layer details.
Example use cases
Pin base image for reproducible builds
“Resolve docker.io/library/alpine image with tag 3.19 to its current immutable digest so I can lock it in my Dockerfile and guarantee the same image every build.”
Detect container image tag drift
“Check whether docker.io/bitnami/postgresql with tag 15 has changed — give me the current manifest digest so I can compare it to what was deployed last week.”
Audit third-party image before deployment
“Before I deploy it to production, can you look up the manifest digest for ghcr.io/open-telemetry/opentelemetry-collector-releases/opentelemetry-collector with tag 0.100.0 so I have a content-addressable reference?”
Technical details
Endpoint
POSThttps://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/container/digest?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to resolve a mutable OCI tag (e.g. 'latest', a semver alias) to its current immutable sha256 digest for pinning, drift detection, or audit purposes — without pulling the full image. Prefer this over local Docker CLI calls when operating in an agent context without Docker access, or when you want a lightweight network-only manifest HEAD request. Note: this endpoint does not validate signatures or scan for vulnerabilities; use dedicated tools for those concerns.
Side effects
- Image repository not found or not publicly accessible — registry returns 404 or 401
- Tag does not exist on the specified image — manifest not found error
- Invalid image name format — rejected by input pattern validation
- Registry rate-limiting or network timeout — transient failure
- Malformed tag string exceeding 256 characters — schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tag | string | Repository branch whose current state should be checked. |
| image | string | Public registry image repository to inspect. |
Tags
x402
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