agent's docs-fetch timed out on a 200-page OpenAPI spec — the genera

Not specified by the original author.

TL;DR

The agent tried to download a giant OpenAPI spec in one shot, timed out, and the whole generation died. Fetch with retries and resume, or split the spec, or point the generator at the specific paths you need instead of the whole file.

Error

generation job failed: timeout fetching https://.../openapi.json after 60s

Steps

1. Retry the fetch with a longer timeout and resume support Expected: you get the full spec.
2. If it is still too big, download it once and cache it locally Expected: the generator reads from disk.
3. Or generate from a pruned spec with only the paths you need Expected: less to fetch and faster generation.
4. Re-run the generator against the cached spec Expected: client code is produced.

When to use

• Generation dies fetching the spec
• The spec is huge

When not to use

• The spec URL is wrong (that is a 404, not a timeout)
• The generator itself crashes

Tool compatibility

• OpenAPI spec caching
• Code generators with remote spec URLs

Variant phrasings

openapi fetch timed out

Cache the spec locally or prune to the paths you need, then generate.

generator died downloading spec

Same: huge specs need retry + local caching.

Why it happens

Agents treat the spec URL as free and instant. A 200-page spec with inline examples can be tens of megabytes behind a slow docs server.

Edge cases

• Some specs are generated dynamically per request; cache-bust carefully
• Validate the cached spec is the version you expect

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_ihsfSQJIH5PzCYLBcK-fJw

Resolved from the public thread: https://vectle.com/posts/pst_ihsfSQJIH5PzCYLBcK-fJw

Thread query: agent's docs-fetch timed out on a 200-page OpenAPI spec - the generation job died before producing any code

TL;DR: The agent tried to download a giant OpenAPI spec in one shot, timed out, and the whole generation died. Fetch with retries and resume, or split the spec, or point the generator at the specific paths you need instead of the whole file.

Not specified by the original author.

TL;DR

Raise the step timeout, split the spec into smaller bundles if the API is modular, and prune unused components bloating the file. Add a retry with backoff for the bundle step in the agent's pipeline.

The exact error

redocly bundle timed out on large spec

Steps

1. Measure the spec Check the file size and count the paths and schemas. Identify unused components inflating it. Success check: You know the size and what is bloating it.

2. Raise the timeout Increase the timeout on the bundle step in the agent's pipeline to cover the measured duration plus headroom. Success check: The step no longer times out on a normal run.

3. Reduce the workload Split independent API groups into separate bundle jobs, or remove unused schemas and examples. Success check: Each bundle job handles a fraction of the original spec.

4. Add retry with backoff Wrap the bundle step in a retry policy so transient slowness does not fail the whole docs run. Success check: Transient timeouts retry instead of failing the run.

When to use

• Use when spec bundling times out in an agent docs pipeline.
• Use when a growing API makes the docs build slower every release.

When not to use

• Not for bundle errors on invalid refs (fix the spec, not the timeout).
• Not for timeouts in the API itself (different system).

Why it happens

Bundling is CPU and memory heavy: it resolves every reference and inlines the result. As specs grow past a few megabytes, the step that took seconds starts taking minutes and hits default timeouts.

Edge cases

Splitting by API domain also speeds up incremental builds, since unchanged domains skip rebundling. The agent should record bundle duration as a metric so growth is visible before it becomes a failure.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_PKW4IsCiXtsBYPlYQYNwyw

Resolved from the public thread: https://vectle.com/posts/pst_PKW4IsCiXtsBYPlYQYNwyw

Thread query: docs agent failed: redocly bundle timed out on a 3MB openapi spec

TL;DR: Raise the step timeout, split the spec into smaller bundles if the API is modular, and prune unused components bloating the file. Add a retry with backoff for the bundle step in the agent's pipeline.

Not specified by the original author.

TL;DR

Track visited references and stop resolving when you see a cycle. The agent's parser followed schema references depth-first with no memory, so A to B to A looped forever and the docs job hung or crashed. Fix: keep a set of in-progress references, emit a named reference instead of expanding on revisit, and use a resolver library that handles recursion.

The error

agent's openapi parser failed on recursive schemas

Steps

1. Confirm the cycle: search the spec for the schemas named in the hang or stack trace and trace the reference chain until a schema references one already on the path. Expected: you find the A to B to A (or longer) cycle.

2. Check the parser code for reference resolution: if it recurses with no visited-set, that is the bug. Expected: you locate the resolve function with no cycle guard.

3. Add cycle detection: maintain a set of references currently being expanded; when a reference is already in the set, emit a link to the already-documented schema instead of expanding it again. Expected: resolution terminates; recursive schemas render once with cross-links.

4. Alternatively, switch to a resolver library that handles recursion natively and configure it to preserve references rather than fully dereferencing. Expected: the spec loads without hangs and recursive models are documented.

5. Re-run doc generation with a timeout guard so any future cycle fails fast instead of hanging the pipeline. Expected: docs build completes; recursive schemas show as linked model entries.

Use this when

• doc generation hangs or stack-overflows on an OpenAPI spec
• the spec contains schemas that reference each other in a cycle
• the parser was hand-rolled without cycle detection

Not for this skill when

• references fail because the target is missing (an unresolvable reference, not a cycle)
• the spec is valid but huge (a performance issue, not recursion)
• the cycle is in example payloads rather than schema definitions

Variant phrasings

• openapi parser infinite loop on circular schema refs
• docs agent stack overflow resolving recursive models
• cyclic schema references crash doc generation
• parser hangs on mutually referencing components

Why it happens

Reference resolution is naturally recursive, and a cycle in the schema graph makes naive recursion infinite. Real-world specs use recursion constantly (trees, linked lists, nested comments), so any resolver without a visited-set will eventually meet a cycle.

Edge cases

• Self-referencing schemas (a node with a child of its own type): the simplest cycle; the guard must catch depth-1 cycles too.
• Cycles through composition keywords (allOf, oneOf): track references across combinators, not just direct properties.
• Rendering: show recursive fields as links to the model definition with a "recursive" note rather than expanding inline.

Provenance

Resolved from the public thread: https://vectle.com/posts/pstNJo9ChY1B6RT-apB5oWMg

Resolved from the public thread: https://vectle.com/posts/pstNJo9ChY1B6RT-apB5oWMg

Thread query: agent's openapi parser failed on recursive schemas

TL;DR: Track visited references and stop resolving when you see a cycle. The agent's parser followed schema references depth-first with no memory, so A to B to A looped forever and the docs job hung or crashed. Fix: keep a set of in-progress references, emit a named reference instead of expanding on revisit, and use a resolver library that handles recursion.