Extract Markdown links
Use to inventory explicit Markdown links without fetching them. Supports single-line inline links/images with non-nested labels, bare or angle-bracket destinations, balanced destination parentheses to depth 8, quoted titles, full/collapsed references with single-line definitions, and http(s) autolinks. Ignores fenced/inline code. No shortcut references, nested labels, HTML links, indented code, or full CommonMark parsing. URLs are untrusted, unvalidated strings; entities stay literal. Maximum 5,000 links, definitions, and unresolved references each.
text · Operation ID: markdown-links
Choose this operation when
- Collect supported explicit links and unresolved references without fetching.
Outside this profile
- Link availability checks, full CommonMark, or URL safety certification.
Exact release references
Static JSON contract · Markdown reference · Fixed example response
Complete input schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"markdown": {
"type": "string",
"maxLength": 100000
}
},
"required": [
"markdown"
],
"additionalProperties": false
}
Complete output-envelope schema
{
"type": "object",
"required": [
"operation",
"version",
"result",
"provenance"
],
"properties": {
"operation": {
"const": "markdown-links",
"type": "string"
},
"version": {
"const": "0.29.0",
"type": "string"
},
"result": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"offsetUnit": {
"type": "string",
"const": "UTF-16 code units; zero-based, end-exclusive"
},
"links": {
"maxItems": 5000,
"type": "array",
"items": {
"type": "object",
"properties": {
"kind": {
"type": "string",
"enum": [
"inline",
"reference",
"autolink"
]
},
"image": {
"type": "boolean"
},
"label": {
"type": "string",
"maxLength": 100000
},
"url": {
"type": "string",
"maxLength": 100000
},
"title": {
"anyOf": [
{
"type": "string",
"maxLength": 100000
},
{
"type": "null"
}
]
},
"line": {
"type": "integer",
"minimum": 1,
"maximum": 100001
},
"start": {
"type": "integer",
"minimum": 0,
"maximum": 100000
},
"end": {
"type": "integer",
"minimum": 0,
"maximum": 100000
}
},
"required": [
"kind",
"image",
"label",
"url",
"title",
"line",
"start",
"end"
],
"additionalProperties": false
}
},
"definitions": {
"maxItems": 5000,
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"maxLength": 200000
},
"url": {
"type": "string",
"maxLength": 100000
},
"title": {
"anyOf": [
{
"type": "string",
"maxLength": 100000
},
{
"type": "null"
}
]
},
"line": {
"type": "integer",
"minimum": 1,
"maximum": 100001
},
"start": {
"type": "integer",
"minimum": 0,
"maximum": 100000
},
"end": {
"type": "integer",
"minimum": 0,
"maximum": 100000
}
},
"required": [
"id",
"url",
"title",
"line",
"start",
"end"
],
"additionalProperties": false
}
},
"unresolvedReferences": {
"maxItems": 5000,
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"maxLength": 200000
},
"label": {
"type": "string",
"maxLength": 100000
},
"line": {
"type": "integer",
"minimum": 1,
"maximum": 100001
},
"start": {
"type": "integer",
"minimum": 0,
"maximum": 100000
},
"end": {
"type": "integer",
"minimum": 0,
"maximum": 100000
}
},
"required": [
"id",
"label",
"line",
"start",
"end"
],
"additionalProperties": false
}
}
},
"required": [
"offsetUnit",
"links",
"definitions",
"unresolvedReferences"
],
"additionalProperties": false
},
"provenance": {
"type": "object",
"required": [
"inputSha256",
"outputSha256",
"deterministic",
"externalRequests"
],
"properties": {
"inputSha256": {
"type": "string",
"pattern": "^[a-f0-9]{64}$"
},
"outputSha256": {
"type": "string",
"pattern": "^[a-f0-9]{64}$"
},
"deterministic": {
"const": true
},
"externalRequests": {
"const": 0
}
}
}
},
"additionalProperties": false
}
Fixed example
One accepted fixed example, not a custom-input trial. No operation runs when this static page is requested.
Example input
{
"markdown": "[API](https://example.com/api \"API docs\")\n[guide][g]\n\n[g]: https://example.com/guide"
}
Example response
{
"operation": "markdown-links",
"version": "0.29.0",
"result": {
"offsetUnit": "UTF-16 code units; zero-based, end-exclusive",
"links": [
{
"kind": "inline",
"image": false,
"label": "API",
"url": "https://example.com/api",
"title": "API docs",
"line": 1,
"start": 0,
"end": 41
},
{
"kind": "reference",
"image": false,
"label": "guide",
"url": "https://example.com/guide",
"title": null,
"line": 2,
"start": 42,
"end": 52
}
],
"definitions": [
{
"id": "g",
"url": "https://example.com/guide",
"title": null,
"line": 4,
"start": 54,
"end": 84
}
],
"unresolvedReferences": []
},
"provenance": {
"inputSha256": "ccee95d894907769f54aaf1e360e6c80ab1bf42b2122653d6b199624145b3914",
"outputSha256": "1bf4ed356d3d8cef041e5a8a5485108223c97e16499cb0b6b975c88eaf8a1414",
"deterministic": true,
"externalRequests": 0
}
}
Bounds and precision
JavaScript IEEE-754 numbers; use strings for large integer IDs/exact decimals where the schema accepts strings. No lossless numeric parsing.
{
"global": {
"requestBytes": 131072,
"responseBytes": 524288,
"jsonDepth": 32,
"jsonNodes": 20000,
"requestsPerMinute": 60,
"paidAttemptsPerMinute": 20,
"idempotencyHours": 24
},
"operation": {
"requestBytes": 131072,
"responseBytes": 524288,
"jsonDepth": 32
}
}
Complete schemas, descriptions and cross-field validation may impose additional limits.
Proposed price and protocol definitions
{
"unit": "one successful operation call",
"proposedNominalUsd": "0.005",
"sixDecimalTokenBaseUnits": "5000",
"subscription": false,
"includesPayerWalletOrNetworkFees": false,
"liveQuoteVerified": false,
"condition": "Actual SDK challenge is authoritative only within the caller's explicit authorization; configured six-decimal token peg is an operator assertion, not a conversion guarantee."
}
Protocol definitions: x402, mpp. MPP uses Tempo charge. Paid MCP execution is unsupported. All runtime readiness is not evaluated in this build.
API path templates, not endpoints on this documentation host
{
"x402": "/v1/x402/markdown-links",
"mpp": "/v1/mpp/markdown-links"
}
Required headers
{
"Content-Type": "application/json",
"Idempotency-Key": "random 16–128 character operation identifier"
}
Actual SDK challenge amount, asset, network, recipient and wallet costs must pass independent authorization. Preserve identical key, body, protocol and credential on retries; on PAYMENT_UNCERTAIN stop and reconcile.
Execution profile and provider conditions
{
"deterministic": true,
"externalRequests": 0,
"maxExternalRequests": 0,
"resultSnapshotPersisted": false,
"fixedExampleIsIllustrativeSnapshot": false,
"requiresPayment": true,
"supportsMcpExecution": false
}
Deterministic supplied-input operation with no external requests or stored request/result bodies. Payment infrastructure retains payment metadata and hashes.
Failure handling
- HTTP 400: Malformed JSON, missing/invalid idempotency key, or payment identifier mismatch Correct the request before payment
- HTTP 402: Payment challenge or rejected payment Use official protocol SDK; inspect payment outcome before another payment
- HTTP 409: Idempotency conflict, duplicate proof, or PAYMENT_UNCERTAIN Keep original key, body, and proof; reconcile uncertainty with operator; never blindly repay
- HTTP 413: Input or generated output too large Reduce input; no payment attempted for validation failure
- HTTP 415: Unsupported media type or compression Send uncompressed application/json
- HTTP 422: Schema or service-specific semantic validation failure Correct input using returned error code; no payment attempted
- HTTP 429: Request/payment-attempt rate exceeded Wait for rate limit window; preserve existing payment identity
- HTTP 503: Payment configuration/provider/state unavailable, or live DNS preparation failed before settlement Check readiness; DNS preparation failures may retry the identical key/body/credential only; uncertainty requires reconciliation
Declared requirements
Before any paid call, refresh the live operation contract and POST the complete bounded budgeted plan to the separate API's /preflight. Unknown requirements block selection; compatible preflight is not permission to spend.