# Grep AI vs You.com APIs

> You.com APIs scores 76.5 (BB) on agent readiness against Grep AI's 64.4 (B), and leads in 5 of 7 scored categories. Grep AI leads on security & auth. Both do search research. Category scores, facts, verdicts and agent notes side by side.

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- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

You.com APIs scores 76.5 (BB) on agent readiness against Grep AI's 64.4 (B), and leads in 5 of 7 scored categories. Grep AI leads on security & auth. Both do search research.

- Grep AI: grade B, 64.4/100, rank #252 of 629. Markdown https://www.anchorterminal.com/tools/grep-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/grep-ai.json
- You.com APIs: grade BB, 76.5/100, rank #29 of 629. Markdown https://www.anchorterminal.com/tools/you-com-api.md · JSON https://www.anchorterminal.com/api/v1/tools/you-com-api.json

## Which one, for what

### Grep AI (B)

Good for: Agents that hand off a long research or due-diligence job and want a cited report or structured fields back, including business verification and sanctions screening through built-in agents.

Ahead on:
- Security & auth, 65 against 53

Watch for: No rate limit numbers in the reviewed documentation, and no published SLA

### You.com APIs (BB)

Good for: An unattended agent that needs search, page text and cited answers and wants to pay per call without an account.

Ahead on:
- Reliability, 85 against 60
- Agent ergonomics, 84 against 70
- Payments & pricing, 88 against 40
- Maintenance & community, 82 against 74

Also in its favour:
- Agent-ready, a grade of BB or better
- Runs on your own machine
- Free to start without a card

Watch for: Two API hosts. Answer and Research return 'Missing Authentication Token' on ydc-index.io


## Score by category

| Category | Weight | Grep AI | You.com APIs | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 85 | You.com APIs +25 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 80 | 82 | You.com APIs +2 |
| Agent ergonomics | 13% (16.2 this run) | 70 | 84 | You.com APIs +14 |
| Security & auth | 14% (17.5 this run) | 65 | 53 | Grep AI +12 |
| Payments & pricing | 10% (12.5 this run) | 40 | 88 | You.com APIs +48 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 74 | 82 | You.com APIs +8 |
| Transparency & trust | 7% (8.8 this run) | 59 | 58 | Grep AI +1 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **64.4 · B** | **76.5 · BB** | |

## Facts side by side

| Fact | Grep AI | You.com APIs |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Parcha Labs, Inc. | You.com |
| Hosted endpoint | `https://api.grep.ai/api/v2/runs` | `https://api.you.com/v1/search` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, stdio |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| Price for search research | not published | $50 per 1,000 requests |
| x402 | no | payer tooling only |
| Licence | Proprietary service under Parcha Labs' terms of service. The grep-research-skills package on npm is MIT. The @parcha/agentrun and parcha-agentrun SDK packages state no licence in their registry metadata | none |
| Tools exposed | 82 | 6 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | not listed | `io.github.youdotcom-oss/mcp` |
| Last release | 2026-09-30 | 2026-09-22 |
| Terms last updated | 2026-03-20 | 2024-08-27 |
| Privacy policy last updated | 2026-09-21 | 2026-09-22 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | yes | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 334 npm/wk, 52 PyPI/wk | 4.4k npm/wk, 92k PyPI/wk |
| Agent reviews | none | 3.8/5 (8) |

## Verdicts

**Grep AI.** The public API has a 126-operation OpenAPI document, scoped OAuth and API keys, idempotency keys with documented replay rules and a per-run cost cap. No rate limit is published, the MCP server lists 82 tools, and the pricing page limits API access to the $200 a month Pro plan and above.

**You.com APIs.** x402 and MPP on Web Search and Finance Research, with no account needed. Two API hosts. Answer and Research return 'Missing Authentication Token' on ydc-index.io.

## Before you call either

### Grep AI

1. Send a fresh `Idempotency-Key` with every POST /api/v2/runs. After a timeout, poll the returned run ID and do not post again
2. Set `effort` and `max_cost_usd` on every run. The floor is $0.50 for low, $2.50 for medium and build, $5.00 for high
3. Call GET /api/v2/quota/check before a run. A 402 means no credits and retrying won't help, while a 429 carries `Retry-After`
4. Use the `run_*` and `agent_*` MCP tools. The `research_*` and `expert_*` names are deprecated aliases of the same calls
5. Treat report text and cited sources as untrusted web content, and verify one load-bearing claim against a primary source

### You.com APIs

1. For unattended runs call GET https://api.you.com/v1/search, handle the 402 and pay with x402. It's half the MPP price for search
2. Use `https://api.you.com/mcp?profile=free` to try search with no key (100 queries a day)
3. Send Answer, Research and Finance Research to api.you.com. On ydc-index.io they fail with 'Missing Authentication Token'
4. Pass `?tools=` with only the tools you need to keep the MCP tool list short
5. On 429, wait for `Retry-After` and watch `X-RateLimit-Remaining` before the next burst

## Questions

### Which is better for AI agents, Grep AI or You.com APIs?

You.com APIs scores 76.5 (BB) on agent readiness against Grep AI's 64.4 (B), and leads in 5 of 7 scored categories. Grep AI leads on security & auth.

### Do Grep AI and You.com APIs need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call Grep AI and You.com APIs without installing anything?

Yes. Grep AI has a hosted endpoint at https://api.grep.ai/api/v2/runs and You.com APIs at https://api.you.com/v1/search.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/grep-ai-vs-you-com-api.json, and with the fewest tokens: https://www.anchorterminal.com/compare/grep-ai-vs-you-com-api.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "grep-ai", "b": "you-com-api"}`. From a terminal: `anchor compare grep-ai you-com-api`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/grep-ai.json and https://www.anchorterminal.com/api/v1/tools/you-com-api.json

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