perplexity.ai

perplexity.ai · Developer / Data APIs modeIntegrated

Last probed 2026-10-07 04:32 UTC · Provisional

People come to perplexity.ai to: call developer and data APIs.

72 / 100triageInterrupt Score(range 41–91 · 8 properties unassessed)How much automated use this service interrupts — the badge-driving metric. Unassessed properties are provisionally scored at 50%; evidence-graded successes at 25%.

Custody / RiskUnknown

ConfidenceProvisional

Verdict: Partially — an AI agent can use perplexity.ai, but activate is blocked — A CAPTCHA blocks automated signup.

DiscoverIncomplete
ActivateBlocked
OperateEasygated by Activate
ManageNot yet probedgated by Activate

Capability parity

Each stage answers one question about what an agent can do unattended. Stages are ordered by the credential-gateway dependency: Activate issues the keys that unlock Operate and Manage. A row marked “Not yet probed” means no probe has tried that capability yet — a different ledger from the “unassessed” properties under Findings, where no probe tier capable of catching that interrupt has run.

Discover

Can an agent find and read it, no account?

Incomplete

Assessment incomplete - not yet probed: Read pricing & limits without login.

Be found by a retrieval agentEasy
Retrieval access present.
Evidence
Path tried
robots.txt / sitemap / discovery headers
Where it stalled
completed
Evidence tier
Tier 1 (unauth probe)
Verification
Evidence-only — graded from passive signal, not live-verified.
Backing checks
sitemap_xml
Read what it does and how to use itEasy
Machine-readable docs present.
Evidence
Path tried
llms.txt / AGENTS.md / schema.org / docs
Where it stalled
completed
Evidence tier
Tier 1 (unauth probe)
Verification
Evidence-only — graded from passive signal, not live-verified.
Backing checks
llms_txt, llms_full_txt, agents_md, agent_card
Read pricing & limits without loginNot yet probed
Public pricing was not confirmed - the page was absent, gated, or unreadable.

Activate

Can an agent sign up and walk away with the keys it needs?

Blocked

Assessment incomplete - not yet probed: Obtain a management / admin key.

Create an account self-serveBlocked
A CAPTCHA blocks automated signup.
CAPTCHA / bot-challenge blocks this.
Evidence
Path tried
signup flow
Where it stalled
verification step
Evidence tier
Tier 0 (passive scan)
Verification
Evidence-only — graded from passive signal, not live-verified.
- CAPTCHA / bot-challengeBefore any account existsHomepage load triggered a turnstile challenge page (matched signal: script[src*="turnstile"]).
Obtain an API / MCP access credentialEasy
Self-serve credential path detected.
Evidence
Path tried
docs → key issuance
Where it stalled
completed
Evidence tier
Tier 1 (unauth probe)
Verification
Evidence-only — graded from passive signal, not live-verified.
Backing checks
api_key_self_serve
Obtain a management / admin keyNot yet probed
No scoped or administrative key path was confirmed after activation.
Accept the terms without a bot-banEasy
No bot-prohibition signal found.
Evidence
Path tried
ToS / policy scan
Where it stalled
completed
Evidence tier
Tier 0 (passive scan)
Verification
Evidence-only — graded from passive signal, not live-verified.

Operate

Can an agent do the service's actual jobs — call, transact, pay?

Easy

Gated by Activate — the credential this stage needs isn't issued unattended, so these rows may be unreachable even where they read Easy.

Call the primary service over MCP / APIEasy
Machine interface present — evidence-only, not live-verified.
Gated by Activate — the credential this needs isn't issued unattended.
Evidence
Path tried
API / MCP / browser
Where it stalled
completed
Evidence tier
Tier 1 (unauth probe)
Verification
Evidence-only — graded from passive signal, not live-verified.
Backing checks
openapi_spec
Complete a transaction / checkoutNot applicable
Integrated tool — the API call is the transaction, no separate checkout.
Gated by Activate — the credential this needs isn't issued unattended.
Pay via an agent rail (x402 / ACP / AP2)Easy
Agent-payment metadata present.
Gated by Activate — the credential this needs isn't issued unattended.
Evidence
Path tried
payment protocol / oauth metadata
Where it stalled
completed
Evidence tier
Tier 1 (unauth probe)
Verification
Evidence-only — graded from passive signal, not live-verified.
Backing checks
oauth_metadata

Manage

Can an agent administer the account and provision resources?

Not yet probed

No probe has attempted this stage yet: Provision / scale / tear down a service; Change account details / set budget / rotate keys; View usage & billing; Cancel / export / delete (offboard).

Gated by Activate — the credential this stage needs isn't issued unattended, so these rows may be unreachable even where they read Easy.

Provision / scale / tear down a serviceNot yet probed
Not probed - provisioning is not part of the probe suite yet.
Gated by Activate — the credential this needs isn't issued unattended.
Change account details / set budget / rotate keysNot yet probed
Not probed - account admin is not part of the probe suite yet.
Gated by Activate — the credential this needs isn't issued unattended.
View usage & billingNot yet probed
Authenticated usage and billing access was not confirmed.
Gated by Activate — the credential this needs isn't issued unattended.
Cancel / export / delete (offboard)Not yet probed
No self-serve cancellation, export, or deletion path was confirmed.
Gated by Activate — the credential this needs isn't issued unattended.

Findings

How scoring works →

Interrupt tier: Moderate-Interrupt — derived from 1 finding; interrupt score 72 / 100 — the badge-driving metric. (range 41–91 · 8 unassessed)

Every tool starts at 100. Each interrupt found subtracts a penalty of base weight × timing × hardness × evidence — the multiplier values below come from the same rubric tables the score is computed with. New snapshots also provisionally subtract 50% of the full worst-case tax for each unassessed property and 25% for evidence-graded successes not live-verified by Tier 2.

Property coverage

A check only counts as clean when a probe tier capable of detecting that interrupt actually ran and found nothing. Not tested ≠ clean.

Property	Stage	State	Evidence	Required
CAPTCHA / bot-challenge	activate	failed	Active finding — itemized in the penalty matrix below. Tier 0 assesses this property.	no
Mandatory phone verification call	activate	unassessed	No probe tier that can detect this has run yet — unknown, not clean. Tier 2 assesses this property.	no
Mailed physical code (postal)	activate	unassessed	No probe tier that can detect this has run yet — unknown, not clean. Tier 2 assesses this property.	no
“Contact sales” wall (no self-serve path)	activate	unassessed	No probe tier that can detect this has run yet — unknown, not clean. Tier 2 assesses this property.	no
Manual approval queue	activate	unassessed	No probe tier that can detect this has run yet — unknown, not clean. Tier 2 assesses this property.	no
Rate-limit-triggered manual review	manage	unassessed	No probe tier that can detect this has run yet — unknown, not clean. Tier 2 assesses this property.	no
One-time account / payment-method provisioning	manage	unassessed	No probe tier that can detect this has run yet — unknown, not clean. Tier 2 assesses this property.	no
Identity / KYC verification	activate	unassessed	No probe tier that can detect this has run yet — unknown, not clean. Tier 2 assesses this property.	no
Crypto wallet / key-custody setup	operate	unassessed	No probe tier that can detect this has run yet — unknown, not clean. Tier 2 assesses this property.	no
Email OTP verification	activate	success	None found — checked at Tier 1 (unauth probe) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 1 assesses this property.	no
SMS / phone OTP verification	activate	success	None found — checked at Tier 1 (unauth probe) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 1 assesses this property.	no
ToS clause banning automated/bot access	discover	success	None found — checked at Tier 0 (passive scan) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 0 assesses this property.	no
Mandatory redirect to vendor’s own site	operate	success	None found — checked at Tier 1 (unauth probe) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 1 assesses this property.	no
SSO-only signup, no API-key issuance	activate	success	None found — checked at Tier 1 (unauth probe) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 1 assesses this property.	no
No Machine Interface	operate	success	None found — checked at Tier 1 (unauth probe) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 1 assesses this property.	yes

Interrupt found	Base weight	× Timing	× Hardness	× Evidence	= Penalty
Starting score					100
CAPTCHA / bot-challengeBefore any account existsHomepage load triggered a turnstile challenge page (matched signal: script[src*="turnstile"]).	6	×1one-time setup	×2.5hard	×0.6Tier 0 (passive scan)	−9
Total penalty					−9
Full unknown tax 95 — capped at 25 (point score uses 50% of the capped value)					−95
Evidence-graded tax (successes not live-verified by a Tier 2 probe) 152.4 — capped at 25 (point score uses 25% of the capped value)					−152.4
Raw score = 100 − 9 = 91 Point score = 91 − 50% × 25 − 25% × 25 = 72.3 → 72					72

What would make this Easy

One concrete change per blocker found. These are the diffs between this listing's current parity and an unattended agent path.

Activate — CAPTCHA / bot-challengeDrop the CAPTCHA, or gate it behind a documented bot-detection signal a well-behaved agent can pass.

How we scored this

Confidence: Provisional (0.55) — Based on Tier 0/1 evidence only (passive checks, no live transaction attempt) — treat the number as a triage signal, not a verified outcome.
Machine-Readability sub-score: 44 / 100 (a separate integration-ease signal — it never enters the Interrupt Score or badge).
Some capability stages are not yet probed — shown plainly in the spine above, never as a pass.
Rubric, tiers, confidence model, and badge thresholds →

Machine-readability checks 44 / 100

Four check groups, equal weight: machine interfaces, browsing efficiency, element discoverability, and discovery/agent access. Each check carries an evidence grade (proven / plausible / emerging) — an honesty label that never weights the score. What these mean →

llms.txtemergingFound — docs.perplexity.ai/llms.txt (35.5 KB, 168 links)
llms-full.txtemergingFound — docs.perplexity.ai/llms-full.txt (1024.0 KB, 225 links)
AGENTS.mdemergingFound — docs.perplexity.ai/AGENTS.md
A2A agent cardemergingFound — docs.perplexity.ai/.well-known/agent-card.json
MCP server (well-known or official registry)plausibleNot provided
OpenAPI/Swagger specplausibleFound — docs.perplexity.ai/openapi.json
Rate-limit headersplausibleNot provided
Structured JSON error responsesplausibleNot provided
OAuth authorization-server metadata (RFC 8414)provenFound — perplexity.ai/.well-known/oauth-authorization-server
API catalog (RFC 9727) (emerging)emergingNot provided
Agent-payment discovery (x402 / UCP) (emerging)emergingNot provided
Lean HTML transfer sizeplausible6 KB raw HTML (threshold 488 KB)
Manageable DOM sizeplausible47 DOM nodes (threshold 1500)
High content-to-markup densityplausibleNot provided
Content readable without JS executionprovenNot provided
Clean-content alternate (RSS/Atom/feed/markdown)plausibleNot provided
Serves markdown on Accept: text/markdownplausibleNot provided
Interactive elements are semanticplausible2/2 semantic (100%); 0 div/span click targets
Form fields have accessible namesplausibleNot checked — no form fields on the representative page
Inputs carry autocomplete hintsplausibleNot checked — no autocomplete-eligible inputs
WebMCP tools (modelContext API)emergingNot provided
AI retrieval/search fetchers allowed (robots.txt)provenNot provided
Sitemap (indexability)plausibleFound — www.perplexity.ai/sitemap.xml
schema.org JSON-LD in raw HTMLplausibleNot provided
Content-Signal directives (robots.txt)emergingNot provided
Web Bot Auth key directory (emerging)emergingNot provided
Discovery Link headers on homepage (emerging)emergingNot provided
Pricing visible without loginNot checked — homepage returned HTTP 403
robots.txt AI-crawler accessplausibleno AI-crawler blocks in robots.txt
Unauthenticated API error is structured JSONplausibleFound — docs.perplexity.ai/openapi.json (HTTP 200)
Unauthenticated API returns auth guidance (401/403 or documented)plausibleNot provided
API exposes rate-limit headersplausibleNot provided
API key obtainable without human interactionplausibleOpenAPI spec published and signup is not SSO-only

Evidence & history

Last probed 2026-10-07 04:32 UTC. The raw JSON is the archival record.

Date	Score	Badge	Rubric version
2026-10-07 04:32 UTC	72	Moderate-Interrupt (current)	rubric v2026.4
2026-10-07 04:32 UTC	72	Moderate-Interrupt	rubric v2026.4
2026-09-07 01:52 UTC	72	Moderate-Interrupt	rubric v2026.4
2026-08-09 23:54 UTC	72	Moderate-Interrupt	rubric v2026.4
2026-08-09 23:54 UTC	72	Moderate-Interrupt	rubric v2026.4
2026-08-09 17:13 UTC	72	Moderate-Interrupt	rubric v2026.4
2026-08-09 05:41 UTC	79	Moderate-Interrupt	rubric v2026.3
2026-08-09 05:41 UTC	79	Moderate-Interrupt	rubric v2026.3
2026-08-09 05:38 UTC	79	Moderate-Interrupt	rubric v2026.3
2026-08-09 05:38 UTC	79	Moderate-Interrupt	rubric v2026.3

Alternatives in Developer / Data APIs

Other Developer / Data APIs tools in the same mode (integrated), ranked by Overall LLM-Friendliness (the mean of Interrupt Score and Machine-Readability) — comparable to this listing because they share its usage mode.

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