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Relaystation Apply Patch
x402
Relaystation Apply Patch is a paid API for AI agents from api.relaystation.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Applies a unified diff (patch) to a source string, returning the patched result or a 422 error on context mismatch — never a silent bad merge.
Price / call$0.01
Success—
StatusUnknown
How this service works
$0.0002/MB. Apply a unified diff to a source string — 422 on context mismatch, never a silent bad merge. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny
Output
Returns the patched string resulting from applying the unified diff to the source. If the context lines in the diff do not match the source, returns a 422 error — guaranteeing no silent bad merges.
Example use cases
Applying code review patch to source
“I have a code review that produced a unified diff — take this original function and apply the patch to it, but throw an error if the context lines don't match exactly so I know if the patch is stale.”
Automated patch replay in CI pipeline
“In my build pipeline, I need to replay a stored unified diff against the current version of this config file — apply the patch and return the updated text, or give me a 422 if the file has changed in a way that breaks the context.”
Merging text edits from a diff tool
“I used a diff tool to capture edits to my markdown document and now I have the original text and the unified diff — can you apply the patch to get the final version, making sure it fails clearly if anything doesn't align?”
Technical details
Endpoint
POSThttps://api.relaystation.ai/v1/text/apply-patchWhen to prefer
Choose this endpoint when you need guaranteed-safe patch application — it explicitly rejects context mismatches with a 422 rather than silently producing a corrupted merge. Ideal for agents automating code edits, config updates, or any text transformation where correctness must be verified and silent failures are unacceptable.
Side effects
- 422 Unprocessable Entity when diff context lines do not match the source string
- Malformed unified diff input causes parsing error
- Empty source or patch input returns error
- Network timeout on very large payloads
- Payment not fulfilled (x402 payment required)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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