Which GPS, serial-number and owner EXIF tags an image carries (keys only)
Lists which privacy-relevant EXIF tags exist in a JPEG, TIFF, PNG (eXIf) or WebP (EXIF) image, for an agent that is about to publish, upload or forward a photo. Reports tag ids and names for GPS, body and lens serial numbers, camera owner, artist, unique image id, device, software, timestamps and thumbnails; values are never returned. Input is the image as base64 (up to 96 KiB, enough for the metadata block of a larger file). It does not decode XMP, IPTC or MakerNote contents (their presence returns unknown), does not strip metadata, and does not read pixels.
What you get
A photo posted with GPSLatitude and BodySerialNumber still in it is a doxxing incident; this names the tags before upload.
Call it
Send the JSON body below to https://agents.writerslogic.com/api/v1/exif-report. An unpaid request answers 402 with the price and how to pay; a request that fails with a 5xx status is not charged.
curl -i -X POST https://agents.writerslogic.com/api/v1/exif-report \
-H 'content-type: application/json' \
-d '{"data":"/9j/4QBeRXhpZgAASUkqAAgAAAADAA8BAgABAAAAWAAAAGmHBAABAAAAMgAAACWIBAABAAAARAAAAAAAAAABADGkAgAEAAAAMTIzNAAAAAABAAEAAgACAAAATgAAAAAAAAD/2Q=="}'
Input
| Field | Type | Required | Description |
|---|---|---|---|
data | string; length 0..131072 | yes | Padded base64 of the image file or its first 96 KiB (the metadata block must be inside it). |
forbid | array<string; one of "gps", "serial", "owner", "unique-id", "device", "software", "datetime", "description", "makernote", "thumbnail", "copyright">; max 11 items | no | Categories whose presence fails the check. Default gps, serial, owner. |
Example request body
{
"data": "/9j/4QBeRXhpZgAASUkqAAgAAAADAA8BAgABAAAAWAAAAGmHBAABAAAAMgAAACWIBAABAAAARAAAAAAAAAABADGkAgAEAAAAMTIzNAAAAAABAAEAAgACAAAATgAAAAAAAAD/2Q=="
}
Result
The response is { "data": ..., "_provenance": ... }. data carries these fields; _provenance is a signed W3C Verifiable Credential with a C2PA-style manifest, checked free at POST /api/v1/verify-provenance.
| Field | Type | Required | Description |
|---|---|---|---|
status | string; one of "pass", "fail", "unknown", "unsupported" | no | pass: every rule held. fail: a rule was violated (see witnesses). unknown: the input lacks the evidence to decide. unsupported: outside what this engine covers. Missing evidence is never a pass. |
container | string; one of "jpeg", "tiff", "png", "webp", "unknown" | no | |
bytesChecked | integer | no | |
byteOrder | one of | no | null when no Exif block was found. |
exifFound | boolean | no | |
tags | array<object> | no | Up to 256 tag keys {ifd, id, name, category}; name is null for tags outside the Exif 2.3 tables. |
categories | array<string> | no | |
gps | object | no | |
serial | array<string> | no | |
owner | array<string> | no | |
unknownTagIds | array<integer> | no | |
opaque | object | no | |
malformed | array<string> | no | |
witnesses | array<object> | no | |
versions | object | no | Every semantic dependency of this answer (engine, tables and their as-of dates, tokenizer, calendar, rounding profile). |
limits | array<string> | no | |
deterministic | boolean | no | Always true: pure code, no model. |
Pay and connect
Available through: x402 (USDC on Base), MCP. MCP clients reach it through the infra-preflight-kit package.
Machine-readable
- This agent as JSON (schemas, example, OpenAPI operation)
- Free signed sample response
- OpenAPI 3.1 · Catalog · Index of every agent